this part of the investigation that a variable is not applied is______
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Related Questions
Which of the following processes occurring during meiosis helps to produce and maintain genetic variation in natural populations? Choose the best answer.
DNA replication
crossing over
fertilization
linkage
Answers
Crossing over is the process occurring during meiosis help to produce and maintain genetic variation in natural populations. Thus the answer is B)crossing over.
When chromosomes of the same type are paired together during meiosis, a biological event called Crossing over takes place.
Parts of the chromosome can be exchanged when two chromosomes, one from the mother and one from the father, line up. The same genes may be present on the two chromosomes in different versions. A gene, for example, could be transferred from the mother to the father's chromosome and vice versa, this process is referred to as Crossing over. The possible transmission of many gene combinations and forms to progeny makes this a very fascinating and significant biological activity. This genetic variation contributes to a species' increased diversity.
Additionally, diversity makes it easier for a species to adapt through time to its changing environment and go through evolution. Therefore Crossing over causes variation in the natural population.
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Which of the following is not an advantage that glycogen provides to muscle cells in which it is stored? Group of answer choices It is available for quick energy spurts. It requires no energy to mobilize the glucose residues for metabolism. It gives anaerobic metabolism a boost.
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Answer: C: It gives anaerobic metabolism a boost
Explanation:
Glycogen doesn't really have anything to do with anaerobic metabolism, but both other statements are correct
describe an environment factor that could affect the growth of an organism
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The main factor that affects the growth of a organism is the pollution caused by factories and wastes as well as harmful gases released.
in mammals, the presence of four limbs is ________, and hair is ________.
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In mammals, the presence of four limbs is tetrapod, and hair is a characteristic feature. It is a unique feature of mammals that sets them apart from other vertebrates. Hair is composed of keratin and is present in different forms such as fur, bristles, and wool, depending on the mammal species.
Apart from hair and four-limbed structures, there are other unique features present in mammals, such as mammary glands, which produce milk to feed their young ones. Also, mammals have a specialized skeletal structure, including the jawbone and ear bones, which are present only in mammals. Moreover, mammals have a diaphragm, a thin sheet of muscle separating the thoracic cavity and abdominal cavity, which helps in respiration.
Tetrapods are the four-limbed animals or vertebrates, which include mammals, birds, reptiles, and amphibians. These animals have four limbs with digits that help in locomotion. The evolution of tetrapods was a significant event in the history of life as it allowed these animals to move to different terrestrial habitats. The tetrapod animals have a well-developed skeletal structure that provides the required support and balance during the movement.
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which of the following statements is true regarding the conservation of metabolic pathways in archaea bacteria and eukarya?
a. they are conserved across archea and bacteria
b. they are not conserved across any of the three domains
c. they are conserved across all three domains
d. they are conserved across archae and eukarya, but not bacteria
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Answer:
Idkthink before you act
Explanation:
D. they are conserved across archae and eukarya, but not bacteria
Small arteries that are dilated or constricted to control peripheral resistance, and thus blood pressure, are:____.
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Small arteries that are dilated or constricted to control peripheral resistance, and thus blood pressure, are arterioles.
Arterioles are small blood vessels that connect arteries to capillaries. They play a crucial role in regulating blood pressure and blood flow distribution throughout the body. By dilating or constricting their smooth muscle walls, arterioles can adjust the resistance to blood flow in peripheral tissues. When arterioles dilate, the lumen size increases, allowing for increased blood flow and reduced resistance, which can lower blood pressure. Conversely, when arterioles constrict, the lumen size decreases, leading to decreased blood flow and increased resistance, which can raise blood pressure. The constriction and dilation of arterioles are controlled by various factors, including neural, hormonal, and local factors such as metabolic demand. The precise regulation of arteriolar tone is essential for maintaining appropriate blood pressure levels and ensuring adequate perfusion to different organs and tissues in the body.
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Which organ system supplies the body with oxygen? *
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Answer: It would be the resperatory system. Your lungs are the main part of that.
Explanation:
Answer:
The respiratory system
Explanation:
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. It consists of the nose, larynx, trachea, diaphragm, bronchi, and lungs.
calculate difference in chemical potential from osmotic pressure
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The difference in chemical potential from osmotic pressure can be calculated using the formula Δμ = nRTΠ.
In the formula Δμ = nRTΠ, Δμ is the difference in chemical potential, R is the gas constant, T is the temperature, Π is the osmotic pressure, and n is the number of moles of solute.
The osmotic pressure is a measure of the concentration gradient between two solutions separated by a semipermeable membrane. It is proportional to the difference in solute concentrations across the membrane and can be used to calculate the chemical potential difference between the solutions.
By using the formula above, we can determine the difference in chemical potential based on the osmotic pressure of the system.
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what is the law of conservation? How does the law of conservation relate to energy conservation?
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Answer:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
Explanation:
hope that helps :)
give reason for flower of hibiscus is complete.
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Answer:
The hibiscus flower is complete ( or a complete flower ) because it is a perfect flower and has the main parts a flower should have. These are the sepals, petals, stigma and stamen.
convection currents in the (blank) are partially responsible for the movement of tectonic plates. A. stratosphere b. geosphere c. lithosphere d. asthenosphere
Answers
Answer:
asthenosphere
Explanation:
bc its liquid, and bc it flows, creating movement fot the plate underneath us to move
Most individuals with genetic defects in oxidative phosphorylation have relatively high concentrations of alanine in their blood. Complete the passage to explain this phenomenon in biochemical terms. Citric acid cycle activity decreases because NADH cannot transfer electrons to oxygen. However, glycolysis continues pyruvate production. Because acetyl-CoA cannot enter the cycle converts the accumulating glycolysis product to alanine, resulting in elevated alanine concentrations in the tissues and blood
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Individuals with genetic defects in oxidative phosphorylation often experience impaired energy production within the mitochondria of their cells. This is because the process of oxidative phosphorylation, which generates ATP, is disrupted due to the defect.
As a result, the activity of the citric acid cycle decreases as NADH cannot transfer electrons to oxygen.
However, the process of glycolysis continues and produces pyruvate, which would normally enter the citric acid cycle and contribute to ATP production. But in this case, the accumulated pyruvate cannot enter the cycle because of the defect, and therefore it is converted to alanine through a process called transamination.
This process results in an accumulation of alanine in the tissues and blood. The conversion of pyruvate to alanine is a way for the body to recycle the accumulating glycolysis product and prevent a buildup of toxic intermediates. Elevated alanine concentrations in the blood can be an indicator of oxidative phosphorylation defects and can be used as a diagnostic tool. Overall, this phenomenon highlights the interconnectedness of different metabolic pathways and the importance of oxidative phosphorylation in cellular energy production.
In conclusion, the accumulation of alanine in individuals with genetic defects in oxidative phosphorylation occurs due to the inability of pyruvate to enter the citric acid cycle, which leads to its conversion to alanine. This phenomenon emphasizes the importance of oxidative phosphorylation in the proper functioning of metabolic pathways in the body.
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1) In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
10 pounds of Fish and 0 pounds of Fruit is an attainable combination.
True
False
2)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
11 pounds of Fish and 0 pounds of Fruit is an efficient combination.
Select one:
True
False
3)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
As Crusoe spends more time catching fish and hence catches more fish, what happens to the opportunity cost of one more pound of Fish?
Select one:
a. none of the answers
b. Does not Change
c. Indeterminate
d. Decreases
e. Increases
Clear my choice
4)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
In case of a move from A to B, what is the opportunity cost of one more pound of Fish?
Select one:
a. 3 less pounds of Fruit
b. none of the answers
c. 1 less pound of Fruit
d. 2 less pounds of Fruit
e. 4 less pounds of Fruit
Answers
1) False 2) False 3) The opportunity cost of one more pound of Fish decreases as Crusoe spends more time catching fish 4) The opportunity cost of Fish from Possibility A to Possibility B is 3 less pounds of Fruit.
1) The given combination of 10 pounds of Fish and 0 pounds of Fruit is not attainable since it does not correspond to any of the possibilities provided. None of the possibilities mention this specific combination.
2) The combination of 11 pounds of Fish and 0 pounds of Fruit is not efficient. Efficiency refers to achieving the maximum possible output with the given resources. Since Possibility F allows Crusoe to produce 11 pounds of Fish and still produce 0 pounds of Fruit, it indicates that more Fruit could be produced without sacrificing Fish production. Therefore, it is not an efficient combination.
3) As Crusoe spends more time catching fish and catches more fish, the opportunity cost of one more pound of Fish decreases. Opportunity cost refers to the value of the next best alternative that is given up when making a choice. In this case, as Crusoe catches more fish, he has to allocate more time and resources to fishing, resulting in a decrease in the production of fruit. The decrease in fruit production represents the opportunity cost of producing one more pound of Fish.
4) The opportunity cost of one more pound of Fish when moving from Possibility A to Possibility B is 3 less pounds of Fruit. This is because Crusoe gives up the production of 3 pounds of Fruit (from 28 to 24 pounds) in order to produce 4 pounds of Fish instead of 0 pounds. The difference in Fruit production between the two possibilities represents the opportunity cost of producing one more pound of Fish.
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Fermentation allows energy to be removed from molecules
-under low pressure
-under anaerobic conditions
-under high pressure
-under aerobic conditions
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Fermentation is a process that allows energy to be removed from molecules under anaerobic conditions.
This means that the process occurs without the presence of oxygen. During fermentation, molecules such as sugars are broken down into simpler compounds, such as alcohol or lactic acid, with the release of energy. This process is used by many organisms, including yeast and bacteria, to obtain energy in the absence of oxygen. The energy produced during fermentation is used for various metabolic processes, including muscle contraction and cell division. Fermentation can occur under low or high pressure, but the presence of oxygen inhibits this process. In summary, fermentation is an important process that allows energy to be extracted from molecules under anaerobic conditions, which is critical for the survival and growth of many organisms.
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if you performed a pcr experiment starting with only one copy of double-stranded dna, approximately how many molecules would be produced after 15 cycles of amplification?
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The number is 32,768
What is the number of molecules would be produced after 15 cycles of amplification?The number of molecules of DNA produced after a certain number of cycles in a PCR experiment can be calculated using the formula:
N = 2^n * N0
where N is the final number of molecules, n is the number of cycles, and N0 is the initial number of molecules.
If we start with only one copy of double-stranded DNA and run 15 cycles of amplification, the number of molecules produced would be:
N = 2^15 * 1
N = 32,768
Therefore, after 15 cycles of PCR amplification, approximately 32,768 molecules of double-stranded DNA would be produced from the original single copy.
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which of the following are increased with the use of mood-stabilizing drugs? group of answer choices brain-derived neurotrophic factor potassium ions serotonin and norepinephrine first messengers
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Highs and lows are increased with the use of mood-stabilizing drugs.
These are some kind of psychiatric drugs that helps in neutralizing depression, hypomania, bipolar disorder, etc.
Lithium, anticonvulsants, and antipsychotics are the three main mood stabilizers.
These medications have different names termed by the doctors for the treatments.
A loud noise causes you to.jump from your seat
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Answer:
is that a question??
if it is, l think it depends with tge sound of the noise
You can physically see the__of a trait, but not the__
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1.) A. Phenotype
B. Genotype
Phenotype corresponds to the physical
appearance of a particular characteristic or
morphological form in an individual.
Example - Hair color, plant height, skin color.
On the other hand, genotype corresponds to
the genetic makeup of an individual. It is
depicted by the gene that is present in the
individual organism. Example- Genotype for
dwarf height in pea plant is 'tt', which carries
both recessive gene variants.
Thus, we can physically see the phenotype
of a trait, but not the genotype.
posidon spreding the sea legend and the real sience behind it with titonic plates
Answers
Answer:
YA
Explanation:
Question 1 (1.5 points)
Why did environmental policies became essential as the US population began to
grow more quickly?
Answers
Environmental policies became essential as the US population began to
grow more quickly because as more individuals acted out of self respect rather than communal goods, resources began to be depleted and is denoted as option D.
What is a Policy?
This is referred to as a general guideline that is used as a basis for making decisions. There are different types of policies and in a country are usually passed by the government after meeting the requirements stated in the constitution.
Population and availability of resources have a direct relationship. As population began to increase, the need for resources began to increase also which is why there was the need for the provision of environmental policies so to make sure that there is no scarcity and makes it the correct choice.
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Fat which has been digested is packaged in protein- and phosphorus-containing lipoproteins which travel in your lymph to your bloodstream. These are called
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Fat which has been digested is packaged in protein- and phosphorus-containing lipoproteins which travel in your lymph to your bloodstream. The lipoproteins that transport digested fat from the lymph to the bloodstream are called chylomicrons.
Chylomicrons are large lipoprotein particles that are formed in the small intestine after the absorption of dietary fats. They are composed of a core of triglycerides (fats), surrounded by a shell of proteins, phospholipids, and cholesterol. Chylomicrons are released into the lymphatic system and eventually enter the bloodstream, where they deliver dietary fats to various tissues throughout the body.
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Which sentence is the best example of homeostasis?
OA. A coyote howls to alert other members of its pack that it is time to meet.
OB. A migratory bird returns to its nesting spot each year to mate.
OC. A caterpillar spins a cocoon around itself with silk that is produced by glands in its body.
OD. A cold-blooded lizard lies on a warm rock to increase its body temperature
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area where weblike pre-keratin filaments first appear?
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Stratum spinosum is the area where weblike pre-keratin filaments first appear.
Stratum spinosum is the layer of the epidermis between the stratum granulosum and stratum Basale. It is also known as the spinous layer or pri-ckle cell layer. Keratinocytes with polyhedral structures make up this layer. Desmosomes are used to connect these. Hematoxylin and eosin staining causes the microfilaments between desmosomes to shrink, giving these cells their web look.
The outermost layer of the skin on your body is called the epidermis. It protects your body from damage, keeps you hydrated, regenerates skin cells. It also contains melanin which determine your skin color. The other two layers- dermis and hypodermis- are present beneath this layer of the skin.
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Background information about the gene family that AG, PLE and FAR belong to
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AG, PLE, and FAR belong to the MADS-box gene family.
The MADS-box gene family is a group of transcription factors that play essential roles in regulating various plant developmental processes, including flower and fruit development. The name "MADS" is derived from the four founding members of the gene family: MCM1 from yeast, AG from Arabidopsis, DEFICIENS from Antirrhinum majus, and SRF from vertebrates. AG, PLE, and FAR are three members of the MADS-box gene family that have been extensively studied in Arabidopsis. AG is involved in flower development, specifically in the formation of reproductive structures such as stamens and carpels. PLE is involved in the regulation of flowering time, while FAR plays a role in fruit development. Overall, the MADS-box gene family is crucial for plant growth and development, making it an important area of research in plant biology.
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Two short-tailed cats are bred together. They produce three kittens with long tails, five short tails, and two without any tails. a. From these results, how is tail length in these cats inherited? b. Write out the genotypes paired with the matching phenotypes for the offspring to support your answer.
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Answer:
a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.
b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:
Genotype | Fenotype
-TT | (long tail)
-Tt | (short tail)
-tt | (no tail).
your blood cells have different sizes, shapes, and functions, yet they all started out alike. What process is responsible for this?
A) Cell Misalignment
B) Cell Reproduction
C) Cell Replication
D) Cell Differentiation
Answers
B) Cell Reproduction
what is/are the function(s) of the cell cycle?
Answers
Answer:
Yea it's DNA replication
Explanation:
From g00gle:
" The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle. "
is fertilization and pollination is the same
Answers
Explanation:
Pollination is the transfer of pollen grains from
an anther to a stigma . Pollen can be transferred
by an animal or by the wind. Fertilization takes
place inside the ovary when the nucleus
of pollen grains fuses with the nucleus of
an ovule to produce a zygote
Answer:
The major difference between pollination and fertilization is that pollinations pollens transfer from one flower to another. Whereas, in fertilization place after pollination is tranferred successfully
In prokaryotes that carry out aerobic respiration, the ________ serves the same purpose as the inner mitochondrial membrane and the ________ serves the same purpose as the mitochondrial matrix. In prokaryotes that carry out aerobic respiration, the ________ serves the same purpose as the inner mitochondrial membrane and the ________ serves the same purpose as the mitochondrial matrix. plasma membrane; cytoplasm cytoplasm; cell wall ribosomes; plasma membrane cytoplasm; nucleoid cytoplasm; plasma membrane
Answers
Answer:
In prokaryotes that carry out aerobic respiration, the plasma membrane serves the same purpose as the inner mitochondrial membrane and the cytoplasm serves the same purpose as the mitochondrial matrix.
I'm sorry! I only know those two. I hope this helps anyway!
A team of scientists altered the DNA of pseudomonas bacteria. The bacteria thus developed had the ability to eat up oil. What could be the likely impact of this biotechnology on the environment and the society?
Toxic gases would be released, causing large-scale pollution.
Damage to marine flora and fauna due to oil spills could be prevented.
The consumption of nonrenewable energy sources would be increased.
The process of oil exploration would become simpler and more economical.
Answers
The alteration of pseudomonas bacteria's DNA to enable them to consume oil could have both positive and negative impacts on the environment and society.
Firstly, the potential benefits include the ability to mitigate oil spills and minimize damage to marine flora and fauna. These genetically modified bacteria could be used in oil spill cleanup efforts, helping to break down and digest the spilled oil more effectively, thus reducing the environmental impact.
On the other hand, there are also potential risks associated with this biotechnology. If the modified bacteria were released into the environment unintentionally or without proper control, there could be adverse consequences. The uncontrolled spread of these bacteria could result in unintended pollution as they consume not only spilled oil but also other hydrocarbon sources, leading to the release of toxic gases and further environmental damage.
Moreover, the introduction of such bacteria could disrupt natural ecosystems, potentially affecting other microorganisms and organisms that depend on oil for survival. The long-term effects on the balance of ecosystems are uncertain and would require thorough evaluation before any large-scale implementation.
In terms of society, the development of these bacteria could have economic implications. The cleanup of oil spills could become more efficient and cost-effective, potentially reducing the financial burden on affected industries and governments. However, it is important to consider the potential risks and unintended consequences of relying solely on this biotechnology, as it may discourage the development of alternative, cleaner energy sources.
Overall, the impact of genetically modified pseudomonas bacteria with oil-consuming abilities on the environment and society would depend on how the technology is deployed, regulated, and monitored. It is crucial to carefully evaluate the potential risks and benefits to ensure responsible and sustainable implementation.
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