The methods which are employed for measuring the enzymatic activities are known as spectrophotometry, fluorescence, and radiolabeling.
To test the functioning of amylase, the amylase test is performed by clinicians. If the amylase test detects high level of amylase in blood or urine, then it indicates pancreas disorder. In amylase solution, add 2-3 drops of 10% iodine solution directly onto the edge of colonies and Wait 10- 15 minutes and record the results. If the medium turns dark then it shows positive result. The dinitro salicylate or DNS method determines the reducing sugars liberated by the action of hydrolase enzymes on carbohydrates, under standard pH and temperatures. The enzyme activity can be detected by the presence of dark violet color which appears because of oxidation reaction.
Learn more about enzyme activity at:
brainly.com/question/13365011
#SPJ4
look at these data showing the species found in four study sites (ss1, ss2, ss3, and ss4) during a research project. which study site has the highest species evenness?
When every species in a sample is present, species evenness is greatest. As relative abundances fluctuate, evenness approaches zero. Indexes like the J' of Pileous can also be used to describe the evenness of species (1975).
The slope of the line reflects species evenness. Low species evenness is shown by a steep gradient, and higher species evenness is indicated by a shallow gradient. A widely used piece of software to create rank abundance plots is the biodiversity R package. A measure of the relative abundances of species within a community is called species evenness. Species richness and species evenness are combined to provide a value that describes a community in quantitative metrics of species diversity like the Shannon Index or Simpson Index. For example, consider a community of three species.
Learn more about species evenness here
https://brainly.com/question/13258090
#SPJ4
A certain species of wildflower that grows yearly in a city park produces pale pink and bright pink blooms. One year a disease kills most of the bright pink flowers. How can the park employees BEST increase the population of bright pink flowers? Responses Interbreed the remaining bright pink flowers to produce more bright pink flowers. Interbreed the remaining bright pink flowers to produce more bright pink flowers. Interbreed the pale pink flowers with one another to produce some bright pink flowers. Interbreed the pale pink flowers with one another to produce some bright pink flowers. Remove all of the pale pink flowers and allow the bright pink flowers to grow and reproduce freely. Remove all of the pale pink flowers and allow the bright pink flowers to grow and reproduce freely. Remove all of the bright pink flowers and allow the pale pink flowers to grow and reproduce freely. Remove all of the bright pink flowers and allow the pale pink flowers to grow and reproduce freely.
Answer:
Interbreed the pale pink flowers with one another to produce some bright pink flowers.
Explanation:
which statements about oxidative phosphorylation are true? the mechanisms of phosphorylation and oxidation are directly coupled. the p/o for nadh is ~2.5. the p/o for succinate is less than that for nadh, at ~ 1.5. the overall energy released by the reduction of o2 to water is more than enough to compensate for the large amount of energy required for atp synthesis.
The true statements about oxidative phosphorylation are the mechanisms of phosphorylation and oxidation are directly coupled.
What is oxidative phosphorylation ?An electron transfer chain that is fueled by substrate oxidation and connected to ATP generation via an electrochemical transmembrane gradient is known as oxidative phosphorylation (OXPHOS).Cells employ enzymes to oxidize foods in the metabolic process known as oxidative phosphorylation, electron transport-linked phosphorylation, or terminal oxidation, which releases chemical energy to create adenosine triphosphate. This happens inside mitochondria in eukaryotes.Steps in Oxidative Phosphorylation
Electron Transport using NADH and FADH2. Near the start of the transport chain, reduced NADH and FADH2 transmit their electrons to molecules. ... the splitting of oxygen into water, proton pumping, electron transport, and ATP synthesis.To learn more about oxidative phosphorylation refer to:
https://brainly.com/question/8562250
#SPJ1
Which of these describes the similar functions of capsids and nuclear membranes?
To provide protection describes the similar functions of capsids and nuclear membranes.
The nuclear envelope, conjointly called the nuclear membrane, is formed from 2 supermolecule bilayer membranes that in eukaryotic cells surround the nucleus, that encloses the genetic material. The nuclear envelope consists of 2 supermolecule bilayer membranes: an inner nuclear membrane and an outer nuclear membrane.
The nucleus is ellipsoid of revolution} in shape and separated from the living substance by a membrane known as the nuclear envelope. The nuclear envelope isolates and provides protection to a cell's DNA from numerous molecules that would accidentally harm its structure or interfere with its process.
To learn more about capsids here
brainly.com/question/25030164
#SPJ4
How far (in terms of a ) is this mass from the equilibrium position of the spring when the elastic potential energy equals the kinetic energy?.
0.58 A far is this mass from the equilibrium position of the spring when the elastic potential energy equals the kinetic energy
If the amplitude = A
The total energy of the system will be (TE) = 0.5 × K × A²
Assume x is the distance from the equilibrium position
The potential energy of the system = 1/2 × K.E
the potential energy = 1/2 × kinetic energy
P.E = 1/2 × (T.E - P.E)
3 × PE = TE
3 × 0.5 × K × x² = 0.5 × K × A²
x = 0.58 × A
The distance from the equilibrium position is 0.58 A
You can also learn about kinetic energy from the following question:
https://brainly.com/question/26472013
#SPJ4
the reaction to a mismatched blood transfusion, as well as erythroblastosis fetalis due to rh factor incompatibility, are two good examples of which type of hypersensitivity reaction?
Examples of type II hypersensitivity reaction and its mechanism. Cells are destroyed by antibodies in type II hypersensitivity reactions. It is also referred to as a cytotoxic response.
In this hypersensitive reaction, a particular antibody (IgG or IgM) binds to the antigen on the cell surface and kills the cell. When a cell is a microbe, destroying it is advantageous to the host. However, the cells are the patient's own RBC in Type II hypersensitivity.
One of the three pathways can lead to cell death, they are:
1. Complement mediated cell lysis - Complement system is a system of lytic enzyme which are usually inactive in blood.
Enzymes of complement system are activated by antigen-antibody complex.
2. Antibody dependent cell mediated cytotoxicity (ADCC) - By its Fab part, the antibody binds to the antigen. However, cytotoxic cells have a receptor for the Fc portion of antibodies. In order to facilitate death, antibodies cross link target cells (microorganisms or RBCs) with cytotoxic cells.
3. Opsonization - When antigen enters into host body, antibodies are produced. Antibody binds to antigen through Fab region. Fc region of antibody remains free.
To learn more about hypersensitivity reaction, refer: https://brainly.com/question/13047133
#SPJ4
Which type of noncovalent interaction supports the double helix of DNA, and produces the base pairings A-T and G-C?a. ion-dipole interactionsb. dipole-dipole forcesc. ion-ion interactionsd. london dispersion forcese. hydrogen bonding
Hydrogen bonding will be used to support the double helix of DNA.
What is hydrogen bonding?A hydrogen atom that is sandwiched between two other atoms with a strong affinity for electrons interacts in a hydrogen bond.
Atoms in separate molecules or distinct regions of the same molecule can form hydrogen bonds with one another.
One of the pair's atoms is covalently joined to a hydrogen atom, and because of its strong affinity for electrons, hydrogen acquires a tiny positive charge.
An unshared electron pair is present in the other atom of the pair. The donor atom efficiently transfers its hydrogen to the receiver atom by electrostatic attraction, creating a connection.
Water is liquid over a much wider temperature range than would be expected for a molecule of its size due to its extensive hydrogen bonding.
To know more about hydrogen bonding, visit:-
https://brainly.com/question/4542860
#SPJ4
use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoautotrophs, and d) photoheterotrophs and identify the answer that correctly finishes the statement: plants are and herbivores are .
Photoautotrophs and chemoautotrophs that correctly finishes the statement: plants are and herbivores are respectivily.
Phototrophs are creatures that use photon capture to create complex organic compounds (like carbohydrates) and obtain energy. The word phototroph is derived from the Ancient Greek words phôs, phtós, which means "light" and "nutrition." They carry out many cellular metabolic processes using the energy from light. The idea that phototrophs must be photosynthetic is a widespread one. Many phototrophs, but not all, frequently photosynthesize, anabolically converting carbon dioxide into organic material that can be used for structural purposes, functional purposes, or as a source for subsequent catabolic processes (e.g. in the form of starches, sugars and fats). All phototrophs create an electrochemical gradient that is used by ATP synthase to produce the molecular energy currency for the cell, either through the utilization of electron transport chains or direct proton pumping. Autotrophic or heterotrophic phototrophs are both possible. If their electron and hydrogen donors are inorganic compounds (e.g. Na 2S 2O 3, as in some purple sulfur bacteria, or H 2S, as in some green sulfur bacteria) they can be also called lithotrophs, and so, some photoautotrophs are also called photolithoautotrophs. Examples of phototroph organisms are Rhodobacter capsulatus, Chromatium, and Chlorobium.
To know more about Photoautotrophs please refer: https://brainly.com/question/13562991
#SPJ4
When Gregor Mendel crossed a homozygous tall plant with a homozygous short plant the F1 plants inherited?
When a homozygous tall plant and a heterozygous short plant were crossed by Gregor Mendel, the F1 plants acquired the trait, and all of the progeny were tall.
In a 3:1 ratio, short and tall plants are produced in the following generation if the progeny self-fertilizes.
All of the flowers in the F1 generation, which was produced by the cross-pollination of two parent plants, were purple. The consciousness of F1 plants produced the F2 generation, which had 75% purple and 25% white flowers. An experiment of this kind is referred to as a dominant phenotype.
The second filial generation, also known as the F2 generation, is made up of the children of the F1 generation.
Learn more about Gregor Mendel at
https://brainly.com/question/941848?referrer=searchResults
#SPJ4
Guys help me what are the two earth systems involved
in the interaction of caribou and ice?
Cyrosphere and biosphere are the two earth systems involved in the interaction of caribou and ice.
What is the result of interaction of caribou and ice?Caribou are a part of the biosphere, a word that refers to all living things on the planet.
Any region of Earth with frozen water is referred to as the cyrosphere. As a result, the interplay of these two systems may be seen in the way that caribou interact with thick frozen ice, which is a component of the cyrosphere. Caribou require this ice to walk on.
The rock cycle, the food chain, the carbon cycle, the nitrogen cycle, the water cycle, and the energy cycle are a few examples found in the Earth system.
To know more about earth systems refer to:
https://brainly.com/question/1265737
#SPJ1
Which cells will most likely display mutations that could potentially result in cancer?
Oncogenes are altered genes that induce uncontrolled cell growth and can result in cancer.
Which mutation type is most likely to cause cancer?P53, also known as TP53, is the gene that is most often altered in cancer patients. A damaged or absent p53 gene is present in more than 50% of malignancies. Most p53 gene mutations occur after birth. Despite the rarity of germline p53 mutations, those who have them have an increased chance of acquiring a wide range of cancers.
What leads to the mutating of cells into cancer?Nearly two thirds of the mutations in tumors are caused by random, unexpected DNA "mistakes." These mutations come from mistakes in the DNA copying process that happen when healthy cells divide.
To know more about Oncogenes visit:-
https://brainly.com/question/7310602
#SPJ4
what do your cranial nerves tell us about our reliance on vision? what cranial nerves are involved in eye function? be sure to include: g
The position of the eyeballs is controlled by cranial nerves III (CN III), IV (trochlear), and VI (abducens), whereas CNIII also affects the position of the eyelids and the size of the pupils. The impulses for the perception of sight go along the optic nerve.
The third, fourth, and sixth cranial nerves—the oculomotor, trochlear, and abducens nerves—are responsible for controlling the extraocular muscles. The abducens nerve, as its name suggests, controls the abduction of the eye by contracting the lateral rectus muscle.
The superior colliculus in the midbrain combines visual cues with motor responses to start eye movements. To focus the eyes on a visual cue, the paramedian pontine reticular formation (PPRF) will cause a fast eye movement or saccade. To swiftly focus the eyes on a visual signal, the paramedian pontine reticular formation (PPRF) will start a rapid eye movement or saccade. The medial longitudinal fasciculus (MLF), which spans the majority of the brain stem, links these regions to the oculomotor, trochlear, and abducens nuclei. In horizontal movements requiring the lateral and medial rectus muscles, the MLF permits conjugate gaze or eye movement in the same direction.
To learn more about cranial nerves, refer:-
https://brainly.com/question/28579852
#SPJ4
the articular fossa of the temporal bone articulates with the mandible at the temporomandibular joint at which landmark? group of answer choices a. articular eminence b. articular fossa c. zygomatic process of the temporal bone d. condyle
The correct response is b. articular fossa. At the iconic temporomandibular joint, the articular fossa of the temporal bone articulates with the jaw.
Disorders of the temporomandibular joint (TMJ) impact the jaw joints as well as the surrounding muscles and ligaments. Trauma, an incorrect bite, arthritis, or general wear and tear are all potential causes. Jaw soreness, headaches, earaches, and facial pain are typical symptoms. The less frequent chronic form of TMJ is substantially more severe. According to Dr. Granquist, the worry with persistent TMJ dislocation is that eventually the tendons, muscles, cartilage, and AE may be harmed, which might result in arthritis, nerve damage, and perhaps permanent dislocation. Another medical problem that might result in a TMJ disorder is arthritis. TMJ difficulties, however, can also naturally be dental issues, particularly if they are brought on by a person's underlying tooth issue. The muscles of mastication, including the temporalis, masseter, medial, and lateral pterygoid muscles, are involved in temporomandibular disorders. The temporomandibular, stylomandibular, and sphenomandibular ligaments are three important ligaments that stabilize the TMJ.
To learn more about temporomandibular joint here
https://brainly.com/question/19340040
#SPJ4
The growth hormone axis contains at least one example of a negative feedback loop.a. Trueb. False
A. True. There is a negative feedback loop on growth hormone secretion.
Negative feedback is responsible for saving changes by activating the opposite response. This mechanism occurs in order to stabilize conditions so that homeostasis.some examples of negative feedback loops are regulation of body temperature, blood pressure, Growth hormone secretion, and fluid content.
Growth hormone secretion is controlled by a negative feedback loop mediated by GH releasing hormone. Hormone secretion stimulates the uptake of somatostatin from the hypothalamus. Somatostatin is a GH blocking inhibitor that responds to high concentrations of GH and mediates negative feedback by blocking GHRH stimulation. Somatostatin reduces the rate at which somatotrophs respond to GHRH pulsatility and can reduce the frequency of these GHs.
Learn more about somatostatin at:
https://brainly.com/question/2076152
#SPJ4
6. A naturalist is studying changes in the size of populations of marmots. Marmots are large rodents with thick coats that live in cold mountainous climates. The naturalist wants to test the hypothesis that marmots are moving farther north (to higher latitudes) because of global warming. She measured populations of marmots to compare to data collected 50 years ago.
The revised version hypothesis should be:
c. If global temperatures are rising and marmots have a better chance of surviving in colder climates, then there will be more marmots in higher altitudes where the temperature is cooler.
Naturalists' major responsibilities are to inform the public about environmental issues and to preserve the wilderness areas' natural settings. Preserving, regenerating, upholding, and safeguarding a natural habitat are their main duties. Teaching, giving speeches in front of an audience, writing, doing scientific and ecological demonstrations, and managing public relations and administrative duties are some of the duties associated with these positions. Naturalists may work in a range of settings, including independent nonprofit conservation and restoration associations, private nature centers, regional, state, and federal parks and forests, wildlife museums, and private outdoor spaces.
To learn more about natu-ralist from the given link
https://brainly.com/question/21506931
#SPJ1
Many neurons of joints help to inform the brain about the activity of the joint, including pain or position of the joint. these types of neurons are classified as _____________________ neurons.
These types of neurons are classified as afferent somatic neurons.
Neurons are messengers of information. They use electrical impulses and chemical signals to communicate information between different areas of the brain and between the brain and the rest of the nervous system.
Neurons are the basic units of the brain and nervous system, responsible for receiving sensory input from the outside world, sending motor commands to muscles, and transducing and transmitting electrical signals at every step. cells responsible for.
Neurons are specialized in transmitting information throughout the body. Nerves are whitish fibers or bundles of fibers in the body composed of numerous neuronal cells that transmit sensory impulses to the brain or spinal cord and impulses from these to muscles and organs.
Learn more about neurons here:-https://brainly.com/question/13061744
#SPJ4
when mendel crossed true-breeding yellow-seeded and true-breeding green-seeded pea plants, all offspring were yellow-seeded. when he took these f1 yellow-seeded plants and crossed them to green-seeded plants, what genotypic ratio is expected for seed color?
When mendel crossed true-breeding yellow-seeded and true-breeding green-seeded pea plants, all offspring were yellow-seeded. when he took these f1 yellow-seeded plants and crossed them to green-seeded plants, the genotypic ratio comes out to be 1:1.
The pattern of gene distribution in a genetic cross's offspring expressed as a ratio is called the genotypic ratio. Consequently, phenotypic ratio. The phenotypic ratio refers to the pattern of physical trait distribution (expressed as a ratio) in a genetic cross's progeny. The genotypic ratio and phenotypic ratio are the two types of genetic ratios used to express the genotype and phenotype of offspring from a genetic cross. The genotypic to phenotypic ratio cannot be predicted with certainty. Additionally, the genotypic ratio cannot be predicted or distinguished based merely on the phenotypic ratio. However, a genotypic ratio can show a phenotypic ratio. The genotypic ratio is a result of Mendel's law of segregation. Mendel's law of segregation states that two alleles segregate in the progeny, with one allele being acquired by half of the progeny and the other half inheriting the second allele. The reason why the kids are not an exact clone of their parents is explained by this law. The genotypic ratio is the proportion that reflects the different genotypes of a test cross' progeny.
To know more about genotypic ratio please refer: https://brainly.com/question/14553311
#SPJ4
What is the relationship between DNA sequence and amino acid sequence and protein structure?
DNA sequence, amino acid sequence, and protein structure are interrelated.
DNA sequence is a code containing amino acid sequence. The amino acid sequence determines the structure of the protein, which in turn affects the function of the protein. DNA sequencing is the process of determining the nucleic acid sequence in DNA.
Amino acid sequence mentions the arrangement of amino acids in the protein. It is normally written as a three-letter or one-letter code and helps in determining the shape of the protein. Protein structure is the arrangement of atoms in amino-acid molecules.
A change in DNA sequence gradually causes a change in the amino acid sequence, and this change eventually causes a change in the protein structure.
To learn more about DNA sequence,
brainly.com/question/26225212
#SPJ4
If a student wanted to view the histology of nephron loops within renal pyramids, where in the kidney should they look?
Multiple Choice
Renal pelvis
Renal sinus
Renal papilla
Renal cortex
If a student wanted to view the histology of nephron loops within renal pyramids, then he/she should look in the renal medulla.
What is the renal medulla?The renal medulla is a structural inner part of the kidney in which we can observe nephron loops located in a region known as renal pyramids, which are very small arrangements formed by strings of nephrons and also tubules.
Therefore, with this data, we can see that the renal medulla is the region where we can find the renal pyramids and this region contains the nephron loops.
Learn more about the renal medulla here:
https://brainly.com/question/12906646
#SPJ1
The blind spot in vertebrate eyes is a region of the retina that contains no photoreceptors.
a) true
b) false
True, the "blind spot" in vertebrate eyes is a region of the retina that contains no photoreceptors.
Blind spot: a narrow area of each eye's visual field where the optic disc is located within the retina. The optic disc lacks photoreceptors, hence there are no image detection mechanisms present here. The blind spot of the right eye is situated to the right of the visual center, whereas the blind spot of the left eye is situated to the left of the visual center. If one keeps both of their eyes open, they won't be able to notice their blind spots because the visual fields of their two eyes will overlap. Since the brain has the ability to "fill in" or disregard the missing area of the image, the blind spot can be challenging to subjectively identify even with one eye closed.
You can also learn about blind spot amplitude from the following question:
https://brainly.com/question/3024472
#SPJ4
Xylem helps plants deliver water and nutrients to the entire plant. What human body system is this like?.
Answer:
The Circulatory system
Explanation:
Like the Xylem help plants deliver water and nutrients throughout the body, the Circulatory system helps the human body transport water and nutrients throughout it (blood being pumped through blood vessels)
Place the following structures in the order that an electrical impulse would travel beginning with the post-synaptic membrane.1. Dendrites2. Soma3. Axon hillock4. Internode5. Node of Ranvier6. Terminal arborization7. Synaptic knobs
The following structures in the order that an electrical impulse would travel beginning with the post-synaptic membrane include the following parts below:
1. Dendrites
2. Soma
3. Axon hillock
4. Internode
5. Node of Ranvier
6. Terminal arborization
7. Synaptic knobs.
What is a Neuron?This is referred to as the structural and fundamental unit of the nervous system and are involves in the transmission of impulses in different parts of the body.
The impulse is carried by the dendrites before it moves to the soma which is the body of the neuron and finally getting to the synaptic knobs.
Read more about Neuron here https://brainly.com/question/6260412
#SPJ1
which body system(s) is (are) dedicated to maintaining stable internal conditions by detecting and responding to stimuli?
The body system dedicated to the maintenance of stable internal conditions by detecting and responding to stimuli is the nervous system.
Nervous system and homeostasisHomeostasis refers to the maintenance of relatively constant internal processes such as temperature, pressure, etc. The normal range of operation of processes is referred to as the set point. When these setpoints are breached, it may result in irreversible damage to the body or even death.
Thus, when setpoints are breached, the breach is quickly reported to the control center (the brain) and the brain sets mechanisms in motion to counter whatever is causing a breach to the setpoints.
All these feedbacks happen between the sense organs and the nervous system. The sense organs are able to sense a breach by picking up stimuli, this is conveyed by the nervous system to the brain. The brain then sends messages to muscles, cells, or tissues to counter the breach and return to normalcy.
In other words, the body system that is dedicated to the maintenance of stable internal conditions, otherwise known as homeostasis, is the nervous system.
More on homeostasis can be found here: https://brainly.com/question/3888340
#SPJ1
haemophilus influenza is an encapsulated bacterium that causes infant meningitis. considering this, which would be best to protect infants form this organism?
The best protection from Haemophilus influenza that causes infant meningitis is administration of conjugate vaccines.
Vaccines are injections administered into body to provide protection. They are based on the principle that prior introduction to weakened or killed from a microorganisms produced natural immunity against it which is remembered by the body by memory cells.
The conjugate vaccines are combination of weak and strong antigens which results in stronger immunity against weak antigens. The conjugate vaccine of Haemophilus influenza comprises polysaccharide of the microorganism. Strong antigen are also known as carrier proteins and in this case are either of tetanus, diptheria toxoid or its mutant toxin of diptheria.
Learn more about vaccines -
https://brainly.com/question/29518057
#SPJ4
glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting __________.
Generally less than 3 minutes is the lasting time for glycolysis, which provides energy by breaking down carbohydrates like glucose.
What is glycolysis?
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. Since the majority of species alive today still use glycolysis, it is an old metabolic route that developed long ago.2,3
Superscript begins at 2,3, ends at 3, separated by a comma.
Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.
In glycolysis, sugar molecules are disassembled to produce the energy needed for cellular metabolism. It takes place in the cell's cytoplasm. Thousands of ATP molecules are produced during glycolysis and are utilised for several types of cellular metabolism.
Read more about glycolysis:
https://brainly.com/question/1966268
#SPJ4
Which of the following is a long-term environmental change that would require a species to adapt?
A. Seasonal change from spring to summer
B. A storm that passed overnight
C. An earthquake
D. Change in average temperature of a region
Answer:
Change in average temperature of a region
Explanation:
This answer is the only long-term environmental change
A mutation that occurs in a somatic cell in an organism will most likely be transferred to?
When an organism reproduces sexually, changes to the genetic material can occur in the reproductive cells (sperm or eggs) and be inherited by the next generation. Mutations that occur in non-reproductive cells, however, are not passed on, as they are only transmitted to daughter cells via mitosis, not to the progeny.
The mutation is defined as any alteration in the DNA sequence, Biologists often use the term single nucleotide polymorphism (SNP) to refer to a single base pair alteration that is common in the population. This is distinct from a mutation, which is any alteration in the DNA sequence, and may be larger than a single base pair change. SNPs are characterized by at least two different sequences in a particular genetic location, with each sequence present in at least 1% of the population.
To know more about mutation refers to the link https://brainly.com/question/17130462?referrer=searchResults
#SPJ4
Which is not a reactant of photosynthesis?
As a waste product, oxygen is emitted throughout the process. In light of this, oxygen is not required for the process of photosynthesis. Here option A is the correct answer.
As oxygen is released when plants employ their raw materials, such as carbon dioxide and water, to generate sugars, oxygen is not required for the photosynthetic process. Therefore, carrying out the process of photosynthesis is not necessary.
Food is created by plants through the process of photosynthesis, which involves carbon dioxide and water in the presence of sunshine and chlorophyll. As a waste product, oxygen is emitted throughout the process. As a result, oxygen is not required for photosynthesis to occur.
Activate photosynthesizers include plants. They absorb carbon dioxide from the atmosphere and transform it into glucose molecules using the energy from sunshine and water.
Complete question:
Which is not a reactant of photosynthesis?
A - oxygen
B - carbon dioxide
C - water
D - all of these
To learn more about photosynthesis
https://brainly.com/question/1388366
#SPJ4
how long must a donor wait to donate red blood cells again following a 2-unit red blood cell apheresis donation?
After giving a 2-unit red blood cell apheresis donation, the donor must wait 16 weeks before giving red blood cells again.
Based on high-risk behavior or a positive test result, a permanent deferral is granted. Donations of whole blood must be separated by at least eight weeks (56 days), and those of power red by at least 16 weeks (112 days). Donors of whole blood may give up to six times annually. Donors of platelet apheresis can donate up to 24 times a year, or every seven days.
The procedure through which platelets and other particular blood components (red cells or plasma) are extracted from a donor is known as apheresis. The Greek verb aphaeresis, which means “to take away,” is the root of the English term “apheresis.” During this procedure, a device known as a cell separator is used. The donor’s blood is extracted, the cell separator gathers the platelets or another blood component, and the remaining blood components are then returned to the donor throughout the donation. About an hour and a half to two hours are needed for each apheresis donation procedure. During the donation, donors can relax or watch movies.
To learn more about red blood cells, refer:-
https://brainly.com/question/1820223
#SPJ4
which of the following is true about the acheulian complex? group of answer choices it emerged around 2.5 mya. it is used to describe simple pebble tools. it emerged around 1.7 mya. it is characteristic of homo habilis.
Acheulean handaxes were multi-purpose implements used for a variety of tasks.
Surface-wear studies reveal that the handaxe's uses included slaughtering and cleaning game, digging in dirt, and chopping wood or other plant materials.
Stone instrument making described by specific oval and pear-shaped "hand-tomahawks" associated with Homo erectus.
Acheulean advancements are thought to have originated around 1.76 million years ago, from the more primitive Oldowan innovation associated with Homo habilis.
Not only are Acheulean devices found all over the world, but it is also the longest-running industry, dating back over 1,000,000 years.
The earliest known Acheulean artifacts from Africa date back 1.6 million years. The most experienced Acheulean localities in India are just somewhat older than those in Africa.
Acheulean handaxes were multi-purpose tools used in a variety of tasks. Surface-wear studies reveal that the handaxe's uses included slaughtering and cleaning game, digging in dirt, and chopping wood or other plant materials.
Hand axes, for example, were more elegant and complex than Oldowan tools.
As a result, the other possibilities are meaningless.
Learn more about to acheulian visit here;
https://brainly.com/question/13022525
#SPJ4
Full Question :
Which Of The Following Is True Regarding The Acheulean Complex? Group Of Answer Choices The Tools, Such As Hand Axes, Were More
Which of the following is true regarding the Acheulean Complex?
Group of answer choices
The tools, such as hand axes, were more refined and sophisticated than the Oldowan tools.
Later Homo habilis began to produce them.
The tools decreased in diversity, as hominins became focused on a few tool types.
The tools could be made from bone and wood in addition to stone.