If one follows 110 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would be formed
Answers
If 110 primary spermatocytes are followed, 220 secondary spermatocytes would be formed as each primary spermatocyte gives rise to two secondary spermatocytes.
In spermatogenesis, primary spermatocytes undergo meiosis I to produce secondary spermatocytes. Meiosis I is a reduction division that halves the chromosome number. Each primary spermatocyte contains 46 chromosomes, which are replicated during the S phase.
After meiosis I, two secondary spermatocytes are formed, each containing 23 replicated chromosomes. Therefore, if 110 primary spermatocytes are followed, and each primary spermatocyte gives rise to two secondary spermatocytes, the total number of secondary spermatocytes formed would be 110 multiplied by 2, which is 220 secondary spermatocytes.
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The complete question is:
If one follows 110 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would be formed?
Related Questions
What percent of electricity in the UK will come from renewable sources by 2010?
a.
1%
c.
10%
b.
5%
d.
40%
Please select the best answer from the choices provided
no links
Answers
Answer:
I think it is C 10percent.
Explanation:
The cornea loses its elasticity as you age. True False Question 7 (0.5 points) ∨ Saved The jellylike fluid found in the posterior half of the eyeball is the aqueous humor. True False
Answers
The cornea loses its elasticity as you age. This statement is False.The cornea is the transparent, curved dome-shaped part that forms the front of the eye.
It helps the eye to focus by bending the incoming light onto the lens, which in turn focuses it onto the retina at the back of the eye. While the cornea undergoes age-related changes like a loss of nerve cells, it does not lose its elasticity as we age. Instead, the lens located behind the pupil undergoes a loss of flexibility which makes it difficult to change shape, resulting in the condition known as presbyopia.
Presbyopia makes it hard to focus on close objects and often happens around age 40.The jellylike fluid found in the posterior half of the eyeball is the vitreous humor. This statement is True. The vitreous humor is a clear, colorless, gel-like substance that fills the space between the lens and the retina in the posterior half of the eye. It is important in maintaining the shape of the eyeball and holding the retina in place.
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what is the purpose of flaming the loop before use
Answers
Flaming the loop before use is a common practice in microbiology laboratories and is done for several purposes:
1. Sterilization: Flaming the loop or wire helps to sterilize it by exposing it to high temperatures. The intense heat of the flame kills or inactivates any microorganisms that might be present on the surface of the loop, ensuring aseptic technique and preventing contamination of the culture being handled.
2. Preventing Cross-Contamination: Flaming the loop between different samples or transfers prevents cross-contamination. By subjecting the loop to the high heat of the flame, any residual microorganisms from the previous sample are destroyed, reducing the risk of transferring contaminants to the next sample.
3. Ensuring Accuracy: Flaming the loop also helps ensure accuracy in microbiological procedures. By eliminating potential contaminants and reducing the chance of cross-contamination, the researcher or technician can have more confidence in the results obtained. This is particularly important in techniques such as streak plate isolation, where the goal is to obtain pure cultures of microorganisms.
4. Safety Precaution: Flaming the loop serves as a safety precaution as well. The high heat from the flame helps to remove any residual organic matter or chemicals that might be present on the loop, reducing the risk of accidental fires or release of hazardous substances.
It's important to note that proper flaming technique should be followed to ensure effective sterilization. The loop should be heated until it becomes red-hot, ensuring that all parts of the loop come into contact with the flame. After flaming, the loop should be allowed to cool briefly before use to prevent heat damage to the culture being transferred.
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Although nitrogen gas makes up 78% of the atmosphere, we can't use it because of what
Answers
i need help putting the words in each line, can only use 1 word once.
Answers
Microscope
Animal
Plant
Nucleus
Mitochondria
Cell membranes
Cell wall
Golgi bodies
Vacuoles
Endoplasmic reticulum
Ribosomes
Lysosomes
Chloroplast
How would a plant respond to an environmental stress such as flooding?
It would use positive feedback to increase root growth when more water is available.
It would form air tubes to provide oxygen to the roots through negative feedback.
It would undergo ethanol formation to use excess water through positive feedback.
It would use negative feedback to close its stomata and reduce water loss.
Answers
A plant can respond to flooding if it would form air tubes to provide oxygen to the roots through negative feedback. It is a type of stress response.
Negative feedback regulationNegative feedback is a process that happens when a given outcome of a system is fed back in a way that tends to reduce its fluctuations.
This type of mechanism (negative feedback regulation) is very common in nature.
Plants use negative feedback regulation to respond to different environmental inputs.
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Which statement accurately describes short-term environmental changes?
A)Short-term environmental changes cause changes in genetic makeup.
B)Short-term environmental changes do not happen suddenly with little warning.
C)Short-term environmental changes do not affect organisms within an ecosystem.
D)Short-term environmental changes immediately affect organisms in the environment.
Answers
Answer:
D)
Explanation:
Short-term environmental changes is described as the change in the environment that occurs quickly and affect the organism in the environment. The organism then adapts the changes in environment in order to survive and not die off.
Some examples of short-term environmental changes are drought, flooding, smog and pollution et-cetra.
Hence, the correct option is D)
Answer:
D
Explanation:
in multicellular organisms, the cells that undergo mitotic cellular division but not meiotic cell division are called:
Answers
The cells in multicellular organisms that undergo mitotic cellular division but not meiotic cell division are called somatic cells.
Somatic cells are the non-reproductive cells that make up the majority of the body's tissues and organs.
These cells divide through mitosis to replace damaged or dead cells and to allow for growth and development.
However, they do not undergo meiotic cell division, which is reserved for the cells involved in sexual reproduction.
Somatic cells are the cells in multicellular organisms that undergo mitotic cellular division but not meiotic cell division, and they are responsible for the growth, repair, and maintenance of the body's tissues and organs.
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3. A dragonfly has blue wings. Its mother has blue wings, but its father has colorless wings. Which of
these statements explains why the dragonfly has blue wings?
a
The dragonfly inherited one copy of the gene for wing color from its mother and one copy
from its father. That gene combination instructs for proteins that connect in ways that
make its wings blue.
b
The dragonfly inherited one copy of the gene for wing color from its mother and one copy
from its father. Those genes connect together to make its wings blue.
с
The dragonfly inherited its copies of the gene for wing color from its mother and not from
its father. Those genes connect together to make its wings blue.
d
The dragonfly inherited its copies of the gene for wing color from its mother and not from
its father. Just like its mother's genes, those genes instruct for proteins that connect in
ways that make its wings blue. Scroll for more
Next
< Back
>
Answers
Answer:
B
Explanation: Couse is is herit trait
what location is the flattest part of the ocean?
Answers
abyssal plains
The flattest portion of the ocean is known as the abyssal plains. These plains are located at the bottom of the ocean, beyond the Continental Slope,...
Answer:
The correct answer is abyssal plain.
Explanation:
:)
:)
5. Which of the following statements best describes the response of finches to drought on the Galapagos Islands?
O A During drought, individual finches saw that large, hard seeds were the only available food. To crack these harder seeds, individual finches grew their beaks
larger, resulting in an increased average beak depth
OB During drought, finches struggled to open harder seeds All the scraping and pecking wore down their beaks, resulting in a reduced average beak depth
OC. During drought, only finches with larger-than-average beaks were able to crack the hard seeds that were available. These finches survived while smaller-
beaked finches died, resulting in an increased average beak depth in the population
O D. During drought, finches with smaller beaks (and smaller bodies) had an advantage. With reduced food supplies, larger finches (with larger beaks) were
more likely to starve. The result was a decrease in average beak depth
Answers
Answer:
it is c got it right on the quiz
Explanation:D hope this helps
A. During drought, individual finches saw that large, hard seeds were the only available food. To crack these harder seeds, individual finches grew their beaks larger, resulting in an increased average beak depth
How large beak finches survive drough condition?During drought, finches with larger beaks survive because they were able to crack the hard seeds that were available in the drought situation while on the other hand, the smaller beaked finches died due to unavailability of food which result in an increased average beak length in the population.
So we can conclude that option A is the right answer.
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Based on the Punnett square you completed for question 7, would it be possible to produce a child without hair on the back of their hands if one of the parents had two dominant alleles? Explain.
Answers
First of all the cross you made at number 7 is incorrect
top left is correct
top right is wrong, it should be HH since you combined allele H with allele H
bottom left is correct
bottom right should be Hh since you combined allele H with allele h
8. If you cross two parents with HH and HH the offspring can't manifest the recessive gene since it's not present in both parental genotypes.
What main factor distinguishes tropical rain forest from northwestern coniferous forest?
A. Average temperature
B. Average precipitation
Answers
Answer:
Average precipitation
Explanation:
The precipitation causes the distinguishing of tropical rain forest to northwestern coniferous forest
Nastic movements and solar tracking; In nictinastic movements, the leaves:
a. they roll up during the day and unroll at night.
b. they curl around a support such as a fence post.
c. they have their stomata open at night and closed during the day.
d. they are extended during the day and folded at night
e. they are oriented horizontally in the dark and vertically in the light.
Answers
In nictinastic movements, the leaves roll up during the day and unroll at night.(option a)
Nictinastic movements are a type of nastic movement that is caused by the change in light intensity. In the case of nictinastic movements, the leaves roll up during the day and unroll at night. This is because the leaves contain a pigment called phytochrome, which is sensitive to light.
When the phytochrome is exposed to light, it changes shape and triggers the production of a hormone called auxin. Auxin then causes the cells on the underside of the leaf to swell, which causes the leaf to roll up. At night, when there is no light, the phytochrome reverts to its original shape and stops producing auxin. This allows the cells on the underside of the leaf to shrink, which causes the leaf to unroll.
Nictinastic movements are thought to have a number of benefits for plants. For example, rolling up the leaves at night helps to protect them from cold temperatures and from being eaten by insects. Additionally, rolling up the leaves helps to reduce the surface area of the leaf, which reduces the amount of water that is lost through transpiration.
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HELP! Transcribe the following DNA base code into the complementary mRNA codons: TACAATCCGCAT
Answers
Natural Gas provides approximately how much of the energy generated in the United states?
1/5
1/8
1/4
1/2
Answers
Hello!
The United States draws 81 percent of its energy as a whole from fossil fuels, but in 2017, natural gas and coal alone provided 61.8 percent of our electricity. So it would be 1/4.
The outer surface of the f0 subunit of atp synthase must be _____ to be embedded in the membrane.
Answers
The outer surface of the f0 subunit of atp synthase must be hydrophobic to be embedded in the membrane.
What is ATP synthase?
Adenosine triphosphate (ATP) is produced by the enzyme ATP synthase during the process of cellular respiration. The primary source of energy used by cells is ATP.
Adenosine diphosphate (ADP) and an inorganic phosphate (Pi) are used by ATP synthase in the process of oxidative phosphorylation, which is the process by which enzymes oxidize nutrients to produce ATP. All life forms contain ATP synthase, which is responsible for all cellular activities.
About 100 ATP molecules can be produced by each ATP synthase every second. Eukaryotes, which include plants, animals, and fungi, have mitochondria, which primarily serve as ATP generators.
Therefore, The outer surface of the f0 subunit of atp synthase must be hydrophobic to be embedded in the membrane.
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how are cells able to maintain order in a disordered world?
Answers
Cells are able to maintain order in a disordered world through the complex interplay of various mechanisms and processes that allow them to regulate and control their internal environment.
One of the key ways that cells maintain order is through the selective permeability of their membranes, which allows them to regulate the entry and exit of molecules and ions. Cells also have various transporters and pumps that actively move molecules and ions across their membranes to maintain proper concentration gradients and electrical potentials.Cells also use a variety of molecular and biochemical pathways to maintain order and prevent damage.
In addition, cells are able to maintain order through the organization of their internal structures and components. This includes the cytoskeleton, which provides structural support and helps to maintain the shape and organization of the cell, as well as various organelles that are responsible for specialized functions such as energy production, protein synthesis, and waste disposal.
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Which of the following items requires an internal
cooking temperature of 165 °F?
a. Pork chops
b. Injected meats
c. Raw Eggs
d. poultry
Answers
D. Poultry
There are three important temperatures to remember when cooking meat or eggs at home: Eggs and all ground meats must be cooked to 160°F; poultry and fowl to 165°F; and fresh meat steaks, chops and roasts to 145°F.
Answer:
D. poultry
Explanation:
how has technology helped to add to our species list
Answers
Answer:
So umm I had a couple at the top of my head but I really didn't know the rest so I did se.arch it for you're better understanding:
The one's I knew:
Better mappingTracking the animals sounds for where they are atdrones to see the animals from the skyThe one's I searched:
Remote controlling samplingTexting ElephantsHigh tech fishing hooksBeehive fencesRemote measurement tools
In photosynthesis, carbon dioxide is "fixed" in ____.
A. the light-dependent reactions
B. the Carbon cycle
C. the light-independent reactions
D. the Krebs cycle
Answers
The correct answer is C. the light-independent reactions, where carbon dioxide is fixed and converted into organic compounds during photosynthesis.
The process of carbon dioxide fixation refers to the conversion of atmospheric carbon dioxide into organic compounds during photosynthesis. This occurs during the light-independent reactions, also known as the Calvin cycle or the dark reactions. These reactions take place in the stroma of chloroplasts, specifically in the chloroplasts of plant cells.
During the light-independent reactions, carbon dioxide molecules are combined with molecules derived from the light-dependent reactions, such as ATP and NADPH. The key enzyme involved in carbon dioxide fixation is called RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase). RuBisCO catalyzes the incorporation of carbon dioxide into an organic molecule called ribulose-1,5-bisphosphate (RuBP), which then goes through a series of reactions to produce glucose and other organic compounds.
In contrast, the light-dependent reactions, which occur in the thylakoid membranes of chloroplasts, involve the absorption of light energy and the generation of ATP and NADPH. These energy-rich molecules produced in the light-dependent reactions are subsequently used in the light-independent reactions to drive the carbon dioxide fixation and synthesis of organic molecules.
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Which group makes up most of the world’s animals?
fish
insects
mammals
amphibians
Answers
Answer: Insect species make up one of the world's largest species...
Explanation:
What impact does increased CO2 in the atmosphere have on marine life? Claim, Evidence and reason.
Answers
It will not help them
Explanation:
Compare and contrast characteristics and use his own diodes and triodes
Answers
Answer:
Comparison of characteristics and use of diodes and triodes is given below:
Diode and triodes both are electrical components but diode allows the flow of current in only one direction while triode has three electrodes.Diode consists of two terminal (anode and cathode) while Triodes have three terminals (cathode, anode, and grid). A diode is an electrical component used to control voltage while triode is a current controlled device. Diodes used in modern electronics such as LED while triodes are used in RF heating systems.Answer:
1. Conditions that result in the emission of electrons from a conductor:
Heating the conductor to a suitable temperature
Exposing the conductor to a strong light
Subjecting the conductor to a very high applied voltage
Subjecting the conductor to high-speed electrons from another source
2. Both diodes and triodes influence current flow and contain electrodes. Diodes involve only two active pieces; triodes contain three electrodes within a tube. Current can flow through a diode in only one direction. Diodes tend to act as rectifiers. In a triode, the third electrode is a grid located between the cathode and the anode. A small difference of potential between the grid and the cathode controls the number of electrons that reach the anode. Adjusting the charge on the grid affects the number of electrons that can reach the anode. Triodes tend to act as amplifiers.
3. Transmitting antenna
Modulator
Oscillator
Microphone
4. RF amplifier
Receiving antenna
Loudspeaker
Demodulator
Tuner
5. hue, saturation, intensity/brightness
6.red, blue, green
Explanation:
pf is all the answer trust me
Plz help!! I need help
Answers
Answer:
a} Allosteric regulation is just any form of regulation where the regulatory molecule (an activator or inhibitor) binds to an enzyme someplace other than the active site.The shape of the active site is changed, allowing substrate to bind at a higher affinity.
b) The molecules that bind cellular respiration enzymes act as signals, giving the enzyme information about the cell's energy state. ATP, ADP, and NADH are examples of molecules that regulate cellular respiration enzymes. ATP, for instance, is a "stop" signal: high levels mean that the cell has enough ATP and does not need to make more through cellular respiration.
c) This is a case of feedback inhibition i in which a product feeds back to shut down its pathways.
n studying a eukaryotic organism k. hultzae, recently discovered on an asteroid floating in space, you find that it has a rather unusual meiosis. in k. hultzae, cells destined to undergo meiosis skip s-phase, and then undergo only the first meiotic division. draw out prophase, metaphase, and anaphase of meiosis, and the daughter cells produced by k. hultzae showing the chromosomes. assume k. hultzae is diploid with three pairs of homologous chromosomes. what are the consequences of this unusual type of meiosis?
Answers
In the eukaryotic organism K. hultzae, meiosis occurs in an unusual manner where cells skip the S-phase and undergo only the first meiotic division.
In the modified meiosis of K. hultzae, cells skip the S-phase, which is responsible for DNA replication, and proceed directly to the first meiotic division. During prophase, homologous chromosomes pair up, but without undergoing crossing over, as the S-phase is skipped.
In metaphase, the homologous chromosome pairs align at the metaphase plate. In anaphase, the homologous chromosomes separate and move to opposite poles of the cell.
As a result, the daughter cells produced by K. hultzae will have a unique chromosome configuration, with each daughter cell receiving a single set of chromosomes rather than the usual two sets.
This unusual type of meiosis can have consequences such as reduced genetic diversity and the potential for unbalanced chromosome distribution in the daughter cells.
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Classification Comparisons
Use the review to complete the chart below.
Linnaean Taxonomy
Cladistics
Genetic Connections
Advantage
Disadvantage
Advantage
Disadvantage
Answers
Each system has its advantages and disadvantages, and the choice of classification system depends on the specific purpose and context in which it is being used.
What is Linnaean Taxonomy?Linnaean Taxonomy:Advantage:
Provides a standardized and widely recognized system of classification based on observable physical characteristics of organismsAllows for easy identification of organisms and communication among scientistsDisadvantage:
Ignores genetic relatedness and evolutionary relationships among organismsMay not accurately reflect the evolutionary history of organisms 2. Cladistics:
Advantage:
Based on evolutionary relationships, providing insights into the evolutionary history of organismsAllows for the identification of common ancestors and the divergence of speciesDisadvantage:
Difficult to determine which characteristics are derived and which are ancestralDependent on the accuracy of the molecular and genetic data used to determine evolutionary relationships3. Genetic Connections:
Advantage:
Based on the genetic relatedness of organisms, which reflects their evolutionary historyProvides more accurate and detailed information about evolutionary relationships than observable physical characteristicsDisadvantage:
Dependent on the accuracy of the genetic data used to determine relatednessMay be limited by the availability of genetic data for certain groups of organismsLearn more about genetic connections, here:
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the development of pubic hair in males and females is considered a secondary sex characteristic because a. it is the second sex characteristic to emerge. b. it is not directly related to sexual reproduction. c. it occurs for some people but not all people. d. unlike a primary sex characteristic, it can be easily modified (by shaving).
Answers
The development of pubic hair in males and females is considered a secondary sex characteristic because it is not directly related to sexual reproduction. The correct option is B.
What are secondary sex characteristics?Secondary sex characteristics refer to physical characteristics that develop during puberty and distinguish between the two sexes.
While primary sex characteristics, such as the uterus and testes, are organs that are specifically associated with reproduction, secondary sex characteristics refer to other physical features that help differentiate males from females.
During puberty, both boys and girls develop pubic hair as one of their secondary sexual characteristics. The presence of pubic hair is not related to reproduction but it is used to distinguish males from females.
Thus, the correct option is B. It is not directly related to sexual reproduction.
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"At Jane's school, it was against the rules to have your phone on you. Phones were to be kept off and in your locker." Which words give us clues that the setting is the present time?
1. Jane's school
2. Phones were to be kept off
3. against the rules
4. locker
Answers
Answer:
Phones were to be kept off
while the largest member is about 30 centimeters long. Which of these lists best describes this order?