In any experiment, you can define the independent variable (or variables) as any factor that is considered to affect directly the object of study, and the dependent variable is the effect observed.
In this scenario, the professor thinks that the place where the students study affects the result of their exams.
Out of these two variables "the result in the exam" is the observed effect, and thus, the dependent variable and the "location where the student studies" is the factor that affects it, therefore it is the independent variable.
Which term describes an excessive amount of cerebrospinal fluid on the brain?
O encephalitis
Ohydrocephalus
O epilepsy
O concussion
Its hydrocephalus.
Cited from https://www.mayoclinic.org/diseases-conditions/hydrocephalus/symptoms-causes/syc-20373604 "Hydrocephalus is the buildup of fluid in the cavities (ventricles) deep within the brain. The excess fluid increases the size of the ventricles and puts pressure on the brain. Cerebrospinal fluid normally flows through the ventricles and bathes the brain and spinal column. But the pressure of too much cerebrospinal fluid associated with hydrocephalus can damage brain tissues and cause a range of brain function problems."
Clones have the same exact _________.Select one:aphysical appearanceb.intelligencec.personality traitsd.genetic material
Explanation:
Clones have the same DNA and the same genes in their nucleus. Therefore, clones have the exact genetic material in their nucleus.
Answer:
The correct answer is D.
Which type of species below would best describe the population discussed on the paragraph to the left
The species that are heavily represent one extreme. "R" stands for reproduction. The progeny of this species receives only a modest expenditure of resources, but they are produced in large numbers.
So, the answer is R Selected.
What about species?A group of things that share the same kind and name: kind. A class of living creatures with a two-part scientific name that comes after a genus and is made up of related individuals capable of having fruitful children. A species is a group of plants or animals that may reproduce with one another and share common traits. Examples include the notion of a genetic species, which assumes that all organisms are capable of passing traits from one another within a common gene pool, and the ecological species concept, which defines a species as a group of organisms framed by the resources they depend on (otherwise known as their ecological niche). A group of creatures that can naturally reproduce with one another and generate viable progeny is sometimes referred to as a species. The billions of people on the planet now are all members of the same species, Homo sapiens. Human beings differ among themselves, just like other species do, in terms of everything from size and shape to skin tone and eye color.Names of species include, for instance: Homo sapiens (humans) feline cat (domestic cats) Venomous vultures (red fox).Learn more about species here:
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How many times did the HIV-1 strain evolve from primates go affect humans? once twice many times
The HIV-1 evolved from primates to affect humans many times.
Compare the digestive systems of a flatworm and a human. Be sure to include examples of the various structures found in the digestive systems of both organisms. How are the digestive systems of humans and flatworms different? What are the major structures of the flatworm digestive system? What are the major structures of the human digestive system?
Flatworms belong to the phylum Platyhelminthes, which have bilateral symmetry, are not segmented, and don't have a body cavity (they are acoelomates).
They lack specialized circulatory and respiratory organs, so they have flattened shapes that allow the diffusion of oxygen and nutrients. Their digestive system has only one opening, the mouth, that is used for both ingestion and egestion (the release of undigested residues).
Flatworms' digestive system has the following structures:
• Mouth
,• Pharynx
,• Intestine
On the other hand, the human digestive system is composed of:
• Mouth
,• Pharynx
,• Esophagus
,• Stomach
,• Small intestine
,• Large intestine
,• Anus
We can see that compared to the human digestive system, flatworms' digestive systems are much simpler, as they lack many of the specialized structures that are present in humans.
What is most likely to be the first organism to grow in a rock outcrop that has never been home to living organisms?
The question is referring to primary succession, which begins with the colonization of living organisms in an area that hasn't had any living organisms before.
This kind of succession begins with microorganisms, and plants such as lichens and mosses.
Given that a rock outcrop is a terrestrial environment, lichens (C) are most likely to be the firsts organisms.
Suppose a mutation occurs in soma portion of DNA and this alters the resulting mRNA that is transcribed. Examine the original and mutated mRNA sequences below and describe how the mutation impacts the resulting protein using either of the codon charts.mRNA from original DNA:ACGGCAUUCAAGGCUACGUACCCUUCUAUCmRNA from mutated DNA:ACGGCAUUCAAAGCUACGUACCCUUCUAUCWhich is correct ? 1)It will cause the resulting amino acid to change 2) no amino acid change (silent mutation) 3) it will cause the protein synthesis to stop early
The answer would be the number 2) no amino acid change (silent mutation)
*When we examine the original sequence, we can notice that the ACGGCAUUC-AAG-GCUACGUACCCUUCUAUC mutated into ACGGCAUUC-AAA-GCUACGUACCCUUCUAUC.
*These codons AAG and AAA refer to LYSINE. Therefore, even if there is a change when the guanine (G) becomes adenine (A) in the mutated version, there is no change in the amino acid.
select all the true statements :a) Mitochondria are outside the nucleus of an animal cell.b) An animal cell can have a Golgi but does not have endoplasmic reticulumc) The cell membrane breaks down sugar to release energy than an animal cell can use.
Cell Biology: Parts of the cell.
Animal cells are different from plant cells and fungal cells because they don't have a cell wall or chloroplasts. However, they have all of the other organelles and parts present in other eukaryotic cells.
As we can see in this diagram of an animal cell, they have a nucleus (where the genetic material is), mitochondria (which breaks down the sugar into energy), endoplasmic reticulum (which folds proteins), Golgi apparatus (which modifies and distributes proteins) and, of course, a cell membrane that contains the cytoplasm and all the organelles.
Now, let's compare this information with the statements:
• Statement a, is true, we can see in the diagram that the mitochondria is found in the cytoplasm.
,• Statement b is false because animal cells have both the Golgi apparatus and endoplasmic reticulum.
,• Statement c is false because the mitochondria is the organelle that breaks down sugars.
Nadia made a table that describes the function of the three main types of RNA. She labeled the RNA types with 1, 2, and 3. She also labeled the RNA types in an image that shows the structure of each type of RNA and models the process of protein synthesis. She used the labels X, Y, and Z in the image.Which combination correctly identifies a type of RNA from the table and the image? A. X and 1 represent rRNA B. Y and 2 represent mRNA C. Y and 3 represent tRNA D. Z and 2 represent mRNA
r(ibosomal)RNA is represented by 1 and Z
m(essenger)RNA is represented by 2 and X
t(ransfer)RNA is represented by 3 and Y
Then, the answer is C
Can you please answer
Answer:
0. provides a type of adaptive immunity
,1. is 100 percent effective in disease prevention
,2. must be given on a regular basis from birth to 18 years of age
What is meant by the term facultative anaerobe?
Answer:
-The term facultative anaerobe describe those organisms that can grow in both the presence or absence of oxygen.
-Facultative organisms are the most adaptable organisms that can survive in the presence, as well in the absence, of molecular oxygen.
Is this true or false? If it’s true, what other additional/helpful things can you add on to this?Deforestation decreases the ambient air quality.
It is true. Deforestation diminishes fresh air supply, as trees are important oxygen productors. Besides, deforestation coupled with overpopulation, and industrial activities, do synergy (that is, the factors cooperate with each other) to diminish air quality. Other important factors are climatic ones, such as differences in atmospheric pression, which causes strong winds that might increase dust/particles in the air. Although, the most important contemporary factors diminishing air quality are anthropocentric.
Is this a E. coli from a EMB media? I’m not sure
Answer: Does not appear so.
Explanation:
You can refer to my other answer to this same question but as stated before, EMB is typically dark red which is not the case for this media.
Structure of the skin
Please see below image for skin structure
Jane sees the following table in her science textbook:What is one conclusion that Jane can make from the information in the table?A. Since starfish cannot grow and develop, they cannot be considered living things.B. Since automobiles can respond to stimuli, they cannot be considered living thingsC. Since starfish cannot use resources for energy, they can be considered living thingsD. Since automobiles cannot reproduce, they cannot be considered living things.
Jane can conclude from the data in the table that since automobiles cannot reproduce, they cannot be considered living being. The biology definition of living being state that they have to be able to grow, reproduce, and respond to stimuli, having a proper metabolism.
What process occurs whena virus transfers DNA fromone bacteria to another?A. transductionB. transformationC. conjugation
Transduction: It is a process when a virus transfers genetic material from 1 bacteria to another. ex- bacteriophages.
So option A is the correct answer.
What causes wind?
A. The constant density of the air
B. The temperature differences of the hemispheres
C. The circulating air currents
D. The movement of the earths axis
Answer:
D
Explanation:
Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth's own rotation. Winds range from light breezes to natural hazards such as hurricanes and tornadoes.
SpermatogoniumPrimaryspermatocyteSecondaryspermatocytesMaleMeiosis beginsMelosis]DogoniumPrimaryDocyteSecondaryDocyteFemaleMelosis beginsAbMelosis IPolarbodyEEBRERemember in meiosis, 4 daughter cells are formed. In themale, all four daughter cells will go on to form maturesperm with tails.12. In a female, how many of the 4 cells become the eggor ova?
Only one of the 4 cells become the egg or ova. Among the 4 cells, only 2 cells with 4 interconnections to become oocytes will continue the process. Among the 2 cells, only one become the ovum. The other cells continue to meiosis but will not be able to complete the process. The rest of the cells will become the nurse cells.
What is happening in the stratosphere and thermosphere as altitude increases? A. The temperature decreases in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun. B. The temperature increases in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun. C. The temperature is normal in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun. D. The temperature is the same in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun
The correct option is B. The temperature increases in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun. As altitude increases more ozone is formed and more solar radiation heats molecules, which results in increased temperature in both the stratosphere and the termosphere.
I need help with this practice problem I am having a hard time,
A soil horizon is a layer of soil with characteristic propierties. This physical, chemical and biological characteristics are common of that layer and differ from the layers above and beneath.
In certain salamanders, the sex of a genetic female can be altered, making her into a functional male; these salamanders are called sex-reversed males. When a sex-reversed male is mated with a normal female, approximately ⅔ of the offspring are female and ⅓ are male. How is sex determined in these salamanders? Explain the results of this cross.
In the given salamanders, females are the heterogametic sex. The correct explanation of this cross is that both of the parents were ZW and WW offspring were not able to survive.
The question is incomplete. The complete question is:-
In a particular species of salamander, the sex of a female can be changed genetically, thereby transforming her into a male salamander. These particular type of salamanders are termed as sex-reversed males. When a sex-reversed male salamander is crossed with a female one (normal), about 2/3 of the offspring turn out to be female while 1/3 of them are male. Given this observation, which of the following options will be true for these salamanders?
A. Males are the heterogametic sex.
B. These salamanders display genic sex determination.
C. Females are the heterogametic sex.
D. Females are the homogametic sex.
E. They show hermaphroditism.
How can one explain the results of this cross?
1. The sex-reverse parent was ZZ, while the female parent was ZW and the ZW offspring could not survive.
2. The sex-reverse parent (male) possessed two W chromosomes.
3. Both of the parents were ZW type while the WW offspring were unable to survive.
4. The female parent possessed two Z chromosomes.
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There are many different breeds of dogs. The table below gives the average adult size of several of these breeds when individualsare raised in similar environments.Breed Average Height (inches) Average Weight (pounds)toy fox terrier8.5 -11.53.5-9.0Pomeranian7.0 - 12.04.2 -7.7Portuguese water dog 17.0-22.033.0-60.0Irish wolfhound32.0 - 35.0115.0 - 180.0Great Dane28.0 - 34.099.0 - 200.0Scientists identified a single gene that controls growth in dogs. They found that the Pomeranians and toy fox terriers have similarversions of this gene, but Portuguese water dogs, Irish wolfhounds, and Great Danes have different versions.Which best explains the findings and the data in the table?OA. The environment in which the dogs grow changes their genetic material, and these changes affect the dogs' growth.OB. The versions of the gene in Irish wolfhounds and Great Danes decrease the rate at which these breeds grow.C. The version of the gene in Pomeranians and toy fox terriers limits growth, so these breeds can only grow to small sizes.D. The difference in size between Portuguese water dogs, Irish wolfhounds, and Great Danes produces different changes inthe dogs' genes.ResetSubmit
The correct option is "C. The version of the gene in Pomeranians and toy fox terriers limits growth, so these breeds can only grow to small sizes." Since, the findings highlight how different variations of the same gene, produce different results in the dogs phenotype, that is, its size.
Answer: C. The version of the gene in Pomeranians and toy fox terriers limits growth, so these breeds can only grow to small sizes.
Explanation: Source: Trust me bro,
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Assuming these genes are independent from each other and express complete dominance, 1) Ggbb: Gray hair and red eyes. ggbb: White hair and red eyes. ggBB: White hair and black eyes. GgBb: Gray hair and black eyes. 2) a- 8/16, b- 8/16, c- 0/16, d- 0/16. 3) a- 9/16, b- 3/16, c- 3/16, d- 1/16.
What are complete dominance and independent genes?Complete dominance is an inheritance pattern expressed by a gene in which one of the alleles dominates over the other allele, and hides its expression in the heterozygous state.
This means heterozygous individuals express dominant phenotypes.
Independent genes are those that code for different features and do not affect not depend on other genes.
During segregation, these genes assort independently, and the presence of one of them does not affect the expression of the other gene. There is no interaction between them.
In the exposed example, there are two genes coding for different traits. We will assume these genes are independent from each other and they express complete dominance.
Gene G codes for hair color- G is the dominant allele and codes for gray hair
- g is the recessive allele and codes for white hair
Gene B codes for eye color- B is the dominant allele and codes for black eyes
- b is the recessive allele and codes for red eyes
Dominant phenotypes
- Gray hair
- Black eyes
The presence of at least one dominant allele is enough to express the dominant phenotype.
1) the phenotypes of the rabbits with the following genotypes are,
Ggbb ⇒ Gray hair and red eyesggbb ⇒ White hair and red eyesggBB ⇒ White hair and black eyesGgBb ⇒ Gray hair and black eyes2) Cross 1:
Parentals) GGbb x ggBb
Gametes) Gb, Gb, Gb, Gb gB, gB, gb, gb
Punnett square) Gb Gb Gb Gb
gB GgBb GgBb GgBb GgBb
gB GgBb GgBb GgBb GgBb
gb Ggbb Ggbb Ggbb Ggbb
gb Ggbb Ggbb Ggbb Ggbb
F1)
8/16 = 1/2 = 50% of the progeny is expected to be dihybrid GgBb and express gray hair and black eyes.
8/16 = 1/2 = 50% of the progeny is expected to be heterozygous for hair color, Gg, and homozygous recessive for eye color, bb. These individuals (Ggbb) are expected to express gray hair and red eyes.
a- Gray fur and black eyes: 8/16
b- Gray fur and red eyes: 8/16
c- White fur and black eyes : 0/16
d- White fur and red eyes: 0/16
3) Cross 2:
Parentals) GgBb x GgBb
Gametes) GB, Gb, gB, gb GB, Gb, gB, gb
Punnett square) GB Gb gB gb
GB GGBB GGBb GgBB GgBb
Gb GGBb Ggbb GgBb Ggbb
gB GgBB GgBb ggBB ggBb
gb GgBb Ggbb ggBb ggbb
F1)
Genotype- 1/16 individuals are expected to be GGBB
- 2/16 individuals are expected to be GGBb
- 1/16 individuals are expected to be Ggbb
- 2/16 individuals are expected to be GgBB
- 4/16 individuals are expected to be GgBb
- 2/16 individuals are expected to be Ggbb
- 1/16 individuals are expected to be GgBB
- 2/16 individuals are expected to be ggBb
- 1/16 individuals are expected to be ggbb
Phenotype9/16 individuals are expected to express gray hair and black eyes, G-B-
3/16 individuals are expected to express gray hair and red eyes, G-bb
3/16 individuals are expected to express white hair and black eyes, ggB-
1/16 individuals are expected to express white hair and red eyes, ggbb
a- Gray fur and black eyes: 9/16
b- Gray fur and red eyes: 3/16
c- White fur and black eyes : 3/16
d- White fur and red eyes: 1/16
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Any pros to Kudzu in the environment? (Think of every possibility of it’s positive impact)
The pros of Kudzu in the environment are that it does an excellent job of preventing soil erosion.
The fact that kudzu grows rapidly is a benefit. It does an excellent job of preventing soil erosion thanks to its large leaves and robust root structure.
Additionally, kudzu has been utilized to feed animals and stop erosion. Particularly in the 1930s, Kudzu was a desirable option for erosion management because of its robust root system and quick development.
Kudzu is tasty and has generated excellent results when used as a pasture for dairy and beef cattle; tests revealed no differences in the milk's color or flavor. Kudzu can be used to generate high-quality silage by mixing it with grass or by being cut for cut-and-carry feeding systems.
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At which position was the noon Sun on January 21, as viewed from Binghamton?1) above position 12) below position 33) between positions 1 and position 24) between position 2 and position 3I also need to know WHY it is the answer!!
The sun position by the Binghamton
if you find a new species of algae floating on the surface of a coastal zone, you would likely consider it a type of ____.
If you find a new species of algae floating on the surface of a coastal zone, you would likely consider it a type of phytoplankton.
Phytoplankton uses sunlight, nutrients, carbon dioxide, and water to manufacture oxygen and nutrients for other organisms. Earth is said to be covered by the ocean, and phytoplankton are the main source of producing up to 50% of oxygen that breathable.
Phytoplankton are microscopic organisms that live in watery environments, both salty and fresh. Many phytoplankton are bacteria, some are , protists and most are single-celled plants.
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In the figure, which areas are similar for all IgG antibodies?
A. a and b
B. a and c
C. b and c
D. c and d
E. b and d
In figure, c and d areas are similar for all IgG antibodies (Option d).
What are the antibodies of the immune system?The antibodies of the immune system can be defined as specific molecules that recognize antigens in order to destroy them during the immune response, which is composed of light chains and heavy chains that may be variable between distinct antibodies.
Therefore, with this data, we can see that the antibodies of the immune system are composed of variable and common chains and they protect the body against antigens.
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Based on your knowledge of scientific laws and theories, which statement is true?A. They both represent definite facts that are not subject to change.B. They are hypotheses.C. They are ordered-one becomes the other.D. They are based on evidence and observations.
Both scientific laws and theories talk about phenomena and events that happen in nature, but laws are used to describe them, while theories explain why those phenomena happen. However, despite the differences between the concepts, they are both based on evidence and observations.
Answer: D
When the brain is completely cut off from blood, what happens then?
The lack of blood in the brain is called brain ischemia, it can cause brain injuries and severe and permenent brain damage after around 10 minutes due to the lack of oxygen necessary for the brain cells to function. Moreover it can lead to death for anoxia.
NaOH to pure water. It releases OH: NaOH is a_____ and the pH will_____.
NaOH to pure water. It releases OH: NaOH is a base and the pH will increase.