Answer: Flase
Explanation: this is false because achondroplasia is not mined towards the disease of the skeleton disease.
The light-dependent reactions of photosynthesis:
a. do not really require light energy to occur.
b. use ATP and NADPH to produce glucose.
c. require the Calvin cycle.
d. take place in the thylakoid membranes of the chloroplast.
It's best to choose option d. The thylakoid membranes of the chloroplast are where the photosynthetic reactions that depend on light take place.
Chemical energy is transformed into light energy by light-dependent processes. In order to make ATP and NADPH, the light-dependent processes of photosynthesis must first collect energy from the sun. The two energy-storing molecules are subsequently put to use in processes that don't require light.
During light-dependent reactions, chlorophyll absorbs solar energy and converts it into chemical energy that is subsequently stored. In light-independent reactions, sugar molecules are assembled from carbon dioxide using the chemical energy generated during light-dependent reactions.
As a result, we can conclude that option d is the best alternative. The light-dependent photosynthetic reactions take place in the chloroplast's thylakoid membranes.
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during an action potential, the relative charge across the membrane of an axon is reversed. which ion makes the largest contribution to this change in potential, and in what direction does the ion move?
In the depolarization step of action potential where the membrane resting potential is reversed by the rush of sodium ions into a neuron.
A membrane potential shift from -70mV to +30mV for a limited period of time is known as an action potential.
The moving action potential has three stages:
1) The depolarization step, where sodium ions rush into a neuron and reverse the membrane resting potential; and
2) repolarization, which is a mechanism that restores the resting voltage of the membrane and the ionic concentration in the cell, is caused by the closure of the voltage-gated sodium channels and the opening of the potassium channels.
3) Hyperpolarization, when excessive potassium ion efflux occurs as a result of some open potassium channels increasing potassium permeability and causing a drop in the membrane potential.
4) The action potential, which is a transient reversal of membrane potential that travels through the axon, comprises three phases that are described above.
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According to the flow of renal filtrate, rank these structures of the nephron in order of proximal to distal.a. Glomerular capsule b. Proximal convoluted tubule c. Distal convoluted tubule d. Descending limb of the nephron loop
Sort these nephron structures from proximal to distal in accordance with the direction of renal filtrate flow.
Gornicular capsule
Convoluted tubule near the end.
nephron loop's descending limb.
nephron loop's ascending limb.
proximal convoluted tubule.
receiving duct.
What is nephron?
Nephron, a functional component of the kidney, is the organ responsible for producing urine as waste and extra chemicals are eliminated from the circulation. Each human kidney has roughly 1,000,000 nephrons. The kidneys (pronephros) of early vertebrate embryos, amphibian larvae, and primordial fish have the most basic nephrons. Only somewhat more advanced in structure are the nephrons present in the kidneys (mesonephros) of frogs, most fish, and more advanced vertebrates during late embryonic development. The adult kidneys, or metanephros, of land vertebrates like reptiles, birds, and mammals have the most developed nephrons.
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How many DNA molecules would there be after four rounds of PCR if the initial reaction mixture contained two molecules?
A. 32
B. 8
C. 64
D. 16
The correct option is D ; 16 , A method known as PCR, or polymerase chain reaction, amplifies a DNA template by using a variety of primers, free nucleotides, and a polymerase enzyme.
Genetic engineering and even investigative forensics make significant use of PCR. A single gene can be amplified using PCR.
Option D, which is 16, is the right response since [tex]2^{4}[/tex]=16.
Note: Taq polymerase, primers, and free nucleotides are crucial molecules required in the PCR process, which amplifies DNA templates.
Thermal cycling guarantees that each phase begins and ends.
Depending on the kind of DNA being amplified, there are certain temperature requirements for each phase of a single cycle.
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The transduction of sound waves into action potentials by the human ear takes place ________.
Answer:
death
Explanation:
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what is the expected functional consequence of movement of a transposable element within the genome?
Transposable elements cause DNA mutations by jumping genes throughout the genome.
A transposable element, also referred to as a jumping gene, is a DNA nucleic acid sequence that can transfer locations within a genome, occasionally creating or correcting mutations and altering the genetic make-up and genome size of the cell.
A large amount of the genome and the majority of the DNA mass in a eukaryotic cell are made up of transposable elements. Transposons, although being self-serving genetic components, are important to the evolution and operation of the genome. In order to change the DNA of a living organism, transposons are a very useful tool for biologists.
Instead of an RNA intermediary, Class II TEs transpose information via a cut-and-paste mechanism. The transpositions are catalyzed by a number of transposase enzymes. While some transposases only bind to particular target sequences, others attach to any DNA target site.
Hence, transposon travel within gene to produce mutation or undo it.
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Describe the relationship between zebra mussel and unionid mussel population density in the hudson river.
Zebra mussels, a non-native species, competed with unionid mussels for food. Zebra mussels were able to outnumber unionid mussels, allowing the zebra mussel population to increase dramatically within six years. The unionid mussel population has declined due to lack of food.
What is Zebra Mussel?The Zebra Mussel is considered one of the most harmful invasive alien species on the planet. It is a small bivalve mollusk from fresh or brackish water, the size of a 5 cent coin, originating in the Black and Caspian Seas and present in Spain since 2001. It is currently found in 3 Spanish river basins: Ebro, Júcar and Guadalquivir.
The Zebra Mussel can create colonies of up to 3 million individuals per square meter and they can live between 2 to 3 years. They reach sexual maturity at one year old and females produce between 4,000 and 1,000,000 fertilized eggs per year. When it detects adverse conditions, it can remain closed and alive for up to two weeks.
This invasive species has no natural predators in the new freshwater habitats it colonizes, thus enhancing its proliferation.
In addition to being a serious environmental threat, the Zebra Mussel is also an economic threat and can cause great damage to the economy.
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Craniofacial size has reduced over the course of human evolution, including during the transition from foraging to farming. place the sequence of events following the dietary transition in chronological order to show how craniofacial growth became reduced.
a. Eating foods that were reduced in toughness
b. Chewing stressed changed
c. Less demand placed on chewing muscles and craniofacial bones
The chronological order that shows how the craniofacial growth became reduced in the course of evolution is:
Eating foods that were reduced in toughnessChewing stressed changedLess demand placed on chewing muscles and craniofacial bones.Craniofacial growth is a highly regulated process that involves the development of the bones of the cranium and the face. The enlargement of the hard and soft tissues occurs as well.
Evolution is the process of slow changes that occur in the course of time over several generations. It is a population phenomenon that can only be observed in a group and not in one individual.
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Somatic hypermutation occurs only in the ________ regions of rearranged heavy and light chains.
Somatic hypermutation occurs only in the V or variable regions of rearranged heavy and light chains.
The immune system can adapt to the new foreign components that it is exposed to through a biological mechanism known as somatic hypermutation. SHM is an essential part of the process of affinity maturation. It is responsible for the diversification of B cell receptors that are employed in the process of recognizing foreign elements (antigens). This enables the immune system to adapt its response to new dangers throughout the lifetime of an organism.
The only place where somatic hypermutation can take place is in the variable region. It is a series of enzymatic reactions that B cells go through in order to produce antibodies. It takes place in the variable sections of B cells, specifically in CDR1 and CDR3.
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the number of genes estimated in the haploid genome is about 21000. how many genes are present in a zygote
The genes are present in a zygote when the number of genes estimated in the haploid genome is about 21000 is 42,000
Union of haploid genomes doubles the number of genes present (fertilization). The Human Genome Project has revealed that there are probably about 20,000-25,000 'haploid' protein coding genes.
Haploid refers to the presence of a single set of chromosomes in an organism's cells. Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent). In humans, only the egg and sperm cells are haploid.Why are genomes haploid?
During fertilisation, an egg and sperm (gametes) combine to form a cell that contains a complete complement of DNA. In humans, these gametes are haploid as they have one copy of each chromosome, contributed from each parent.
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The growth hormone axis contains at least one example of a negative feedback loop.
a. True
b. False
Option A. True. The growth hormone axis contains at least one example of a negative feedback loop.
The growth hormone axis contains a negative feedback loop, where the release of growth hormone inhibits the further release of growth hormone from the anterior pituitary gland. The Role of the Negative Feedback Loop in the Growth Hormone AxisThe growth hormone axis is the system responsible for controlling the release of growth hormone from the anterior pituitary gland. It is an important part of the endocrine system that is responsible for:
Regulating growthMetabolismReproductionOne of the ways it regulates these processes is by using a negative feedback loop. In this loop, the release of growth hormone from the anterior pituitary gland will inhibit further release of the hormone. This is an important mechanism that helps to keep the release of growth hormone in balance and maintain homeostasis in the body.
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A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?A. the siblings of the organismB. the offspring of an organismC. the other organisms living nearbyD. the mating partner of an organism
A mutation that occurs in the gametes of an organism will most likely be transferred to the offspring of an organism.
A mutation is a change that occurs in the DNA sequence, either due to mistakes when the DNA is being copied onto the daughter cells or as the result of environmental factors such as UV light and cigarette smoke.
There are different types of Mutations which include Chromosomal aberrations, Point Mutations, and Frameshift Mutations. These can change the proteins which are synthesized from the DNA.
Mutations can have an effect on an organism by means of converting its bodily characteristics (or phenotype) or they could impact the way DNA codes the genetic records (genotype). Whilst mutations arise they could motivate the termination (dying) of an organism or they can be partly lethal.
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M protein, hyaluronidase, collagenase, and often a capsule, can be virulence factors for certain pathogenic strains of:
Mycobacterium
Streptococcus
Neisseria
Staphylococcus
Yersinia
M protein, hyaluronidase, collagenase, and often a capsule, can be virulence factors for certain pathogenic strains of Streptococcus. Streptococcus (GAS), often referred to as Streptococcus pyogenes, is a bacterium that can colonize the anogenital tract, skin, and throat.
What does Streptococcus pyogenes cause?
Streptococcus pyogenes can be spread through shared food or drinks, or through droplets produced when an infected person coughs or sneezes.
What type of infection is Streptococcus pyogenes?
The most common cause of pharyngitis in children and teenagers is streptococcus pyogenes, generally referred to as group A streptococcus (GAS). Clinical and epidemiological evidence should be used by clinicians to assess the possibility of GAS pharyngitis.
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how are innate and adaptive imunity different innate immunity is the defense we are born with
The innate kind of immunity is typically passed on to kids from parents. Adaptive immunity cannot be inherited because it is not transmitted from parents to children.
Everyone is born with inherent (or natural) immunity, a form of all-encompassing defense. The skin, for instance, serves as a barrier to prevent pathogens from entering the body. Additionally, the immune system can tell when an invader is alien and potentially harmful. The innate and adaptive immune systems are two subsystems of the immune system. Innate immunity is typically thought of as a vague reaction, while the adaptive immune system is considered to be quite specialized.
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what is at least one defining feature of an area of association cortex, as opposed to primary sensory or motor cortex?
The various thalamic input sources are one distinguishing feature between primary and association cortical areas.
While the visual association cortex is involved in more complex aspects of an image, such as using the discrepancy in information sent from the right and left eyes to perceive depth, the primary visual cortex is responsible for processing visual information related to basic aspects of an image (such as size and shape).
The majority of the cerebral surface of the human brain is made up of the association cortices, which are mostly in charge of the intricate processing that occurs between the arrival of input in the primary sensory cortices and the production of behavior.
The majority of the cerebral surface of the human brain is made up of the association cortices, which are in charge of the complicated processing that occurs between the arrival of input in the primary sensory.
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Which options describe advantages of genetic engineering in agriculture?
(Select all that apply.)
having crops that are tougher to harvest
□ having crop
that are resistant to diseases
O having crops that yield more food per acre
having crops that are immune to all diseases
Answer:
□ having crop
that are resistant to diseases
Explanation:
the denaturation of which enzyme would most directly interrupt the process of base pairing of nucleotides during dna replication?
The denaturation of DNA Polymerase enzyme would most directly interrupt the process of base pairing of nucleotides during DNA replication.
A particular kind of enzyme called DNA polymerase (DNAP) is in charge of creating fresh nucleic acid molecules that are copies of the original DNA. Polymers are huge compounds consisting of smaller, repeating units that are chemically linked to one another. Nucleic acids are polymers.
All living things contain a particular type of enzymes called DNA polymerase. DNA replication and DNA repair and upkeep are two of its primary functions. The enzyme is essential for the generational transmission of genetic information.
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For bacteriophages and animal viruses ________ is the step in the viral life cycle that determines host cell or tissue specificity.
A) penetration
B) assembly
C) attachment/absoption
D) synthesi
For bacteriophages and animal viruses, C) attachment/absorption is the step in the viral life cycle that determines the host cell or tissue specificity.
What is the life cycle of bacteriophages?Bacteriophages have lytic/lysogenic cycle. Lytic cycle causes the death of the host whereas lysogenic cycle causes integration of phage into the host genome. Bacteriophages inject DNA in host cell whereas animal viruses enter by endocytosis or membrane fusion.
Lytic cycle steps of bacteriophages are as following:
1. Phage attachment: To enter a host bacterial cell, phage must first attach itself to the bacterium, 2. bacterial cell entry, 3. phage replication and 4. birth of new phage.
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What are the sources of energy?
Sources of energy includes two major sources - Renewable and Non-renewable energy sources.
Renewable energy sources are abundant in nature and are long-lasting. These energy supplies can be renewed spontaneously and are environmentally safe. Renewable energy sources include solar energy, geothermal energy, wind energy, biomass, hydropower, and tidal energy.
A non-renewable resource is a natural resource situated under the earth's surface. These types of energy supplies do not refill at the same rate as they are consumed. It takes millions of years to refill them.
Coal, oil, and natural gas are prime examples of nonrenewable resources. Natural gas, coal, petroleum, nuclear energy, and hydrocarbon gas liquids are examples of nonrenewable energy sources.
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which mammals were found to have a vocal range of 7 octaves, nearly twice that of humans?
Bats mammals were found to have a vocal range of 7 octaves, nearly twice that of humans.
With their particularly modified voice boxes, bats are able to use their amazing vocal range to reach seven octaves, greatly exceeding that of humans.For the first time, scientists have captured video of a bat's voice box, or larynx, while it creates sound. They discovered that bats use a thick structure known as "false vocal folds" to produce sounds near the bottom of their range.Similar vocal folds found in humans are used by throat and death metal vocalists to produce their guttural growls even though they are not used for speech.To know more about bats check the below link:
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was the punnett square created in this exercise a good predictor of offspring phenotypes resulting from a dihybrid cross of heterozygous parents?
Answer: Punnett Squares take each of the possible alleles that the parent can pass down and predicts all possible outcomes for the offspring
Explanation:In this example, let’s set the trait for hair color (this is not a real example, it's hypothetical).Capital A is for blonde hair (its dominant)Lowercase a is for brown hair (it's recessive)In the above Punnett square, both parents are heterozygous- they have one Allele for blonde hair and one allele for brown hair. Since blonde hair is dominant, they both have blonde hair.In this Punnett square, 2/4 (50%) of the offspring will have the genotype Aa. This will present itself in the phenotype of blonde hair.1/4 (25%) of the offspring will have the genotype AA, which is homozygous for blonde hair.Lastly, 1/4 (25%) of the offspring will have the genotype aa, and this is homozygous recessive for brown hair.A Punnett square makes this much easier to visualize.
What are the similarities between DNA replication and RNA replication?
The similarities between DNA replication and RNA replication would be the integrity of the genetic material is intended to be preserved by both methods.
The template for both procedures is deoxyribonucleic acid (DNA). The orientation in which DNA and RNA are synthesized is from 5' to 3'. Enzymes are required for the stimulation of significant reactions in both processes. Both copying and transferring the genome are accomplished by replication. DNA is needed as a template for both processes. Both produce bonds that resemble phosphodiesters.
At precise locations where the DNA double helix is unraveled, known as origins, DNA replication begins. An enzyme called RNA-dependent RNA polymerase, also known as RNA replicase, is responsible for catalyzing RNA replication from an RNA template.
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What is the name given to the process in which a DNA strand is used as a template for making mRNA?
The process in which a DNA strand is used as a template for making mRNA is Transcription.
The non-physical transfer of genetic material from one bacterial strain to another is known as transformation. During DNA replication, daughter DNA is produced by using an existing DNA strand as a template. By using a DNA strand as a template, RNA polymerase synthesises RNA during transcription. This process occurs in the nucleus. mRNA moves back and forth between the A and P sites of the ribosome during the synthesis of proteins. The process of turning an mRNA sequence into polypeptides on ribosomes is known as translation.
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Multicellular organisms ensure that most proteins are produced at appropriate times and in appropriate cell types via the regulation of the that encode these proteins. True or false?
Multicellular organisms control the transcription of the genes producing these proteins to ensure that the majority of proteins are produced when required and in the appropriate cell types.
Why does multicellular eukaryotes need to regulate which genes are expressed at any particular time?The regulation on gene expression results in energy and physical space conservation. It would be more energy-efficient to turn on the genes just when necessary because activating every gene would need a significant amount of energy from of the organism.
Protein synthesis is governed by what?After they have been created, the majority of proteins can be altered covalently or by fusing with other molecules, enabling them to also be controlled in response to signals from of the extracellular environment. Protein levels in cells can be controlled by different rates of protein cleavage.
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the division of the autonomic nervous system that is anatomically known as the thoracolumbar division is the_____division.
The division of the autonomic nervous system that is anatomically known as the thoracolumbar division is the autonomic division.
The autonomic nervous system is a part of the peripheral nervous system that regulates involuntary physical processes as well as pulse rate, vital sign, respiration, digestion, and arousal. It contains 3 anatomic divisions are sympathetic, parasympathetic, and enteric.
Thoracolumbar division of the autonomic nervous system that is guilty to initiate bodily stress response (“flight or fight”) Preganglionic neurons. Neurons of the intermediolateral column of the neural structure, found among the amount T1-T12 and L1-L3. Ii is responsible for stimulating fight-or-flight responses in the body.
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In which compound does the bond between the atoms have the least ionic character.
The bonding compound between atoms that has the least ionic character is HI.
HI because the degree of iconicity can be determined by the difference in electronegativity, which is 0.5 for HI. Also, hydrogen iodide is composed of hydrogen halides and diatomic molecules, both of which are nonmetals. HF 1.9, HCL 0.9, and HBR 0.7 So the bond between the atoms that have the smallest ionic is HI, which is 0.5.
Ionic bonds are bonds that occur due to the handover of electrons to form positive ions and negative ions whose electron configuration is the same as that of noble gases.
This question has multiple choices:
a) HF
b) HCI
c) HBr
d) HI
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what do skeletal muscle contractions share in common with smooth muscle contractions? group of answer choices both types of contractions consume very little atp. both types of contractions generate little force or a weak force. both types of contractions do not require calcium ions for a contraction to occur. both types of contractions result from thick and thin filaments sliding past one another.
Thick and thin filaments flowed past one another to produce both types of contractions. Both kinds of contractions can happen without the help of calcium ions.
What are the similarities between the contractions of cardiac and skeletal muscles?Cardiac muscle is a striated muscle, just like skeletal muscle, and their mechanisms of contraction are mostly comparable. Both require actin and myosin, which are arranged in a highly structured lattice as the foundation of the force-generating mechanism.
Does smooth muscle have the same ability to contract as skeletal muscle?Skeletal muscles can contract at a variety of rates, in contrast to the extremely sluggish contraction of smooth muscles. The fibers that make up skeletal muscles can contract quickly, slowly, or a combination of both.
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This type of irrigation, often used in orchards growing tree crops, distributes water to plants through small parallel channels between crop rows but often leads to increased soil erosion in the field.
a. Drip irrigation
b. Flood irrigation
c. Furrow irrigation
d. Spray irrigation
Furrow irrigation, which is frequently used in orchards with tree crops.
What distinguishes flood irrigation from furrow irrigation?Furrow irrigation, a common practice in orchards growing tree crops, provides water to plants through narrow parallel ditches between crop rows, however it frequently causes increased soil erosion in the field.Surface irrigation, often referred to as flood or furrow irrigation, involves farmers pouring water through narrow trenches that cut through their crops. It is likely one of the earliest techniques for watering fields.Surface irrigation techniques using gravity-based water distribution include flood and furrow irrigation.They vary in that furrow irrigation involves flooding only the trenched rows between plants, whereas flood irrigation involves flooding an entire field and, as a result, spreading water equally.In comparison to drip irrigation systems, which waste about 3% of the water they use, furrow irrigation systems are projected to waste 40% of the water they consume.An irrigation technique that enables precisely regulated water application is drip irrigation, commonly referred to as trickle irrigation or micro-irrigation.To learn more about furrow irrigation refer to:
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How do you record the sound of the environment?
In many instances, you can record natural sounds. Using your video camera to record background noise is the simplest method. Simply place the camera in a decent location to record the scene's ambient noise, being careful to avoid being too near to anything that sounds notably louder than the rest of the background.
You'll need a digital recorder and a microphone to record animals. A self-contained system, like those in cellphones and voice recorders, is one choice. A hydrophone is an underwater instrument that listens for and captures all ocean noises.
Their application in a natural sound recording is constrained, nevertheless, because they do not react linearly to all frequencies. Condenser mics, which provide a higher-quality signal but need a power source, are the preferred choice for most field recordists. Little condensers are electret microphones.
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