summarize the defining features of prophase through telophase, pointing out those which you used in the microscope slide to determine the stage.
Answers
To determine the stage of mitosis using a microscope slide, observe the organization of chromosomes, the state of the nuclear envelope, and the presence or absence of the nucleolus.
The stages of mitosis are Prophase where the chromatin condenses to chromosomes, and the nucleolus disappears. Then in metaphase the chromosomes align in straight line. In Anaphase the sister chromatids are pulled apart and the cell elongates. In telophase, the chromosomes reach the opposite poles.
The defining features of the stages of mitosis from prophase through telophase are as follows:
1. Prophase: Chromatin condenses into chromosomes, each consisting of two sister chromatids. The nucleolus disappears, and the nuclear envelope starts to break down. The mitotic spindle, consisting of microtubules, begins to form. Under a microscope, you can identify prophase by the visible condensed chromosomes and the disappearance of the nucleolus.
2. Metaphase: Chromosomes align at the metaphase plate (the equator of the cell) and spindle fibers attach to the centromeres of each chromosome. In a microscope slide, the key feature to identify metaphase is the straight line of chromosomes in the center of the cell.
3. Anaphase: Sister chromatids are pulled apart by the spindle fibers towards opposite poles of the cell. The cell begins to elongate. Anaphase can be identified under a microscope by observing the separated chromatids moving towards the poles and the elongation of the cell.
4. Telophase: The chromosomes reach the opposite poles of the cell, and the nuclear envelope starts to reform around them. The chromosomes uncoil and become less condensed, returning to chromatin. The nucleolus reappears, and the mitotic spindle disassembles. Telophase can be identified under a microscope by the presence of two distinct nuclei within a single cell and the reformation of the nuclear envelope.
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Related Questions
What type of bonds are present in H2O2?
A.
covalent bonds
B.
nonmetallic bonds
C.
metallic bonds
D.
ionic bonds
Answers
Hope that helped
Which of the following steps is not likely to take place during cellular respiration? (4 points)
a
Oxygen combines with carbon of simple sugar.
b
Energy molecule transfers energy to cells.
c
Simple sugar breaks down.
d
Energy is used up.
Answers
Answer:
D. Energy is used up.
Explanation:
You're undergoing DURING cellular respiration. Energy can't really be used up DURING cellular respiration as there are changes, break-downs, and activities undergoing stated for answers A, B, and C. These answers are similar and much reasonable during cellular respiration processing than energy being used up.
when you are frightened, your nervous system initiates the fight or flight response. as part of this response, adrenaline is released in your bloodstream and binds to a g protein adrenaline receptor on your muscle cells. the g protein signal transduction pathway eventually results in activating glycogen phosphorylase, the enzyme that breaks down glycogen (a starch stored in muscles) into glucose. the glucose is now available to be used by the muscles for fighting or fleeing.
Answers
When you are frightened, your nervous system initiates the fight or flight response. As part of this response, adrenaline is released in your bloodstream and binds to a G protein adrenaline receptor on your muscle cells.
Step-by-step explanation:G protein signal transduction pathway It is commonly known as a signal transduction pathway.It is a cellular mechanism that enables cells to respond to stimuli by modifying their behavior. G proteins are proteins that span the plasma membrane of cells and act as molecular switches to regulate the actions of effector enzymes or ion channels. In the fight or flight response, adrenaline binds to the G protein adrenaline receptor on muscle cells, initiating the G protein signal transduction pathway, which ultimately results in the activation of glycogen phosphorylase. Glycogen is a starch that is stored in muscles. By activating glycogen phosphorylase, the fight-or-flight response causes glycogen to be broken down into glucose. This glucose is then used by the muscles for fighting or fleeing, as it provides a rapid source of energy that can be used to power intense physical activity.Learn more about G protein signal transduction pathway here: https://brainly.com/question/15600310
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the biogeochemical cycles move through biotic and abiotic regions.t/f
Answers
True, the biogeochemical cycles move through biotic and abiotic regions.
Biogeochemical cycles are processes that are involved in the movement of nutrients in the atmosphere, biosphere, and geosphere. They are referred to as biogeochemical cycles because they include organic (bio), geological (geo), and chemical (chemical) components.
The biogeochemical cycle describes the flow of essential nutrients through the ecosystem. The carbon cycle, the nitrogen cycle, the phosphorous cycle, and the water cycle are the four most common biogeochemical cycles. Nutrients are cycled through the ecosystem in the biogeochemical cycle. This implies that they are moved from one region to another, from biotic to abiotic regions and vice versa.T/F: True. Biogeochemical cycles move through biotic and abiotic regions.
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If an organism is 2n=54, how many chromosomes will be in each if it's gametes?
Answers
Answer:
444eefff+-dgd2238if guy gt titty TRG y45y
If an organism is having 2n = 54 chromosomes, then the gamete will have 27 chromosomes each.
What are gametes?A gamete is an animal or plant reproductive cell. Female gametes are acknowledged as ova or egg cells in animals, whereas the male gametes are known as sperm.
During cell division, the gamete receives half of the chromosomes of the parent cell due to a process referred to as meiosis.
Thus, if an organism is having 2n = 54 chromosomes, then the gamete will have 27 chromosomes each.
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Biologists refer to the number of chromosomes with an "#n". For example, 1n for one copy of chromosomes and 2n for two copies. How else can this be expressed?
Answers
Answer:
haploid/diploid
Explanation:
The number of chromosomes can also be expressed as haploid or diploid, instead of 1n for one copy and 2n for two copies.
The haploid number of chromosomes also refers to a copy of the chromosomes or half of the genome of organisms while the diploid number of chromosomes refers to the double or complete set of chromosomes in the genome of organisms.
So, in other words: n = haploid and 2n - diploid.
describe evidence that supports the big bang theory
Answers
Could you please help me on this I could use some correct assistance! Your help would be great ❣️I believe you just have to put yes or no.
Answers
1a. Prokaryotic cells doesn't have a nucleus.
1b. Eukaryotic cells have a nucleus.
Page 2 - Answers2a. Prokaryotic cells doesn't have any membrane-bound organelles since they're single cells.
2b. Eurkaryotic cells have a membrane-bound organelles. If they didn't why would they have a nucleus?
3a. Prokaryotic cells have a plasma membrane.
3b. Eukaryotic cells have a plasma membrane too.
4a. Prokaryotic have circular DNA.
4b. Eukaryotic cells also have DNA.
5a. Prokaryotic cells have cytoplasma.
5b. Eukaryotic cells also have cytoplasma.
6a. Prokaryotic cells have ribosomes.
6b. Eukaryotic cells also have ribosomes.
7a. Most prokaryotic cells have a cell wall. Mostly plant cells have cell walls.
7b. Eukaryotic cells don't have a cell wall. Like I said, plant cells have cell walls.
8a. Prokaryotic are simple cells, since they don't have lots of organelles.
8b. On the other hand, prokaryotic cells are more complex since they have lots of organelles.
9a. Prokaryotic cells are smaller than Eukaryotic cells. They measure in 0.1 to 5.0 micrometers.
9b. Eukaryotic cells are much bigger, measuring in 10-100 micrometers.
10a. Prokaryotic cells are unicellular.
10b. Eukaryotic cells are multicellular.
11a. Prokaryotic cells are in the Monera Kingdom, which consists of bacteria.
11b. Eukaryotic cells are in the animalia, plantae, fungi, and protista kingdom.
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How do both sodium and potassium ions travel
Answers
Answer:
Sodium ions pass through channels in the hydrophobic barrier that have been formed by membrane proteins. The crossing membrane is called facilitated diffusion because it is facilitated by the channel
Potassium ions have to be transocated through specific membrane transport proteins. It is then transported into the cell through potassium pumps with energy being consumed int the form of ATP.
The sodium-potassium pump goes through cycles of shape changes to help maintain a negative membrane potential. In each cycle, three sodium ions exit the cell, while two potassium ions enter the cell. These ions travel against the concentration gradient, so this process requires ATP.
Explanation:
Answer:
The sodium potassium pump goes through cycles of shape changes . In this way they help maintain a negative membrane potential. In each cycle, two potassium ions enter the cell while three sodium ions exit the cell . These ions travel against the concentration gradient. And this process requires ATP.
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Shortly after ingesting a big plate of carbohydrate-rich pasta, you measure your blood's hormone levels. What results would you expect, compared to before the meal
Answers
Answer:
blood hormone level will increase
Explanation:
since once food reach the stomach it will trigger different hormone process that cause release of enzymes required to digest carbohydrate
After ingesting a plate of pasta, which is rich in carbohydrates, the levels of insulin increases and glucagon decreases in the blood.
The working of insulin and glucagon:The hormone insulin and glucagon work in a negative feedback loop. At the time of digestion, the foods, which comprise carbohydrates are transformed into glucose. The majority of this glucose is sent to the bloodstream, resulting the elevation of blood glucose levels.
This enhancement in the levels of glucose in the blood signals the pancreas to generate insulin, and reduce the levels of glucagon in the blood. After some hours, glucagon works to counterbalance the activities of insulin.
After five to six hours, the levels of glucose in the blood decreases due to the activity of insulin, this instigates the pancreas to generate glucagon.
Thus, after eating carbohydrate rich food, the levels of insulin increases in the blood and glucagon decreases.
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Unlike animal cells, plant cells contains —
A.
mitochondria.
B.
few nuclear pores in their nucleus.
C.
a large vacuole for water storage.
D.
centrioles.
Answers
I"LL GIVE BRAINlIEST
Translate the mRNA sequence into the amino acid sequence.
Original DNA Sequence: T A C A C C T T G A C T
mRNA Sequence: A U G U G G A A C U G A
Amino acids: ??? ( help! )
Once again, I'll give brainliest !
* please be respectful to not answer if you don't know what the question is asking, that is just taking my points and not giving the chance to those who know :')
Answers
Answer: I don’t know how to comment but thanks for the answer on my recent question
Explanation:
Don’t report me
Which of the following methods would help decrease marine pollution? a. Government regulation of agriculture b. Government regulation of industry c. Reduction in chemical use d. All of the above Please select the best answer from the choices provided A B C D.
Answers
The method that would help decrease marine pollution is "d. All of the above." Government regulation of agriculture, government regulation of industry, and reduction in chemical use are all effective approaches to tackle marine pollution.
Marine pollution is a complex issue caused by various activities on land and in the water. Government regulation plays a crucial role in addressing and mitigating the sources of pollution. By implementing regulations and policies, governments can enforce measures to control agricultural practices, industrial activities, and chemical use, all of which contribute to marine pollution.
Government regulation of agriculture is important as it can address issues such as nutrient runoff, pesticide use, and soil erosion. By promoting sustainable agricultural practices, reducing the use of harmful chemicals, and implementing best management practices, governments can help prevent agricultural pollutants from reaching marine environments.
Similarly, government regulation of industry is vital in controlling the discharge of pollutants, waste management, and enforcing proper treatment of industrial effluents. By setting standards, monitoring compliance, and implementing penalties for non-compliance, governments can ensure that industries operate in an environmentally responsible manner, reducing their impact on marine ecosystems.
Additionally, reducing chemical use across various sectors, including agriculture, industry, and consumer products, can significantly contribute to decreasing marine pollution. By promoting the use of environmentally friendly alternatives, minimizing the release of toxic substances, and implementing proper waste management systems, the input of harmful chemicals into marine ecosystems can be reduced.
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What is region x on the above wave called? I give brailiest!!!!!
Answers
Answer:
rarefaction
Explanation:
along the same direction the wave travels
The graph shows the change in surface water temperatures from 1880 to the present.
How could the change in surface temperatures shown in the graph most likely impact tropical areas?
Answers
There is less average global ice, and coral bleaching will occur.Increases in surface temperature have caused an boom in the quantity of atmospheric water vapor over the oceans. This water vapor feeds climate structures that produce precipitation, growing the hazard of heavy rain and snow.
Warmer water temperatures put off ice boom withinside the fall and winter, and the ice melts quicker the subsequent spring, exposing ocean waters for an extended duration the subsequent summer. Changes in the quantity of sea ice can disrupt regular ocean circulation, thereby main to modifications in international weather.
Higher temperatures are worsening many sorts of disasters, consisting of storms, warmth waves, floods, and droughts. A hotter weather creates an surroundings which could collect, retain, and unharness extra water, converting climate styles in one of these manner that moist regions turn out to be wetter and dry regions drier.
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Answer:
There is a pattern of stronger storms and coral bleaching will occur.
Explanation:
I just read that guys answer^^
Describe one feature that a spreadsheet has
that a database does not have.
Answers
please help me please will give brainliest to
Answers
Answer:
16
Explanation:
By using the law of independent assortment, you can solve this by calculating
\(2^4\)
however, crossover can cause endless possibilities of genotypes!
What is the primary function of sucrose enzyme in enzyme
Answers
Answer:
Plays a big role in sugar metabolism
also sucrose is the major product of photosynthesis in not reducing sugar and with bounded reactivity and it also stores molecules in plant....
I hope this helped you
which statements best relates why these animals have so much blubberyou
Answers
Answer:
They have a lot of blubber due to their habitat or the weather. I'm not sure if that's correct.
Explanation:
an organism with two of the same alleles for a particular trait is said to be?
Answers
Answer:
An Organism with two similar alleles is a Hom ozygous organism.
A young child becomes very sick and his doctor does a series of tests to try to figure out what is causing his illness. His tests show that the child has generalized muscle weakness in many muscles all over his body, cellular damage to his nervous system, and heart irregularities. Because the doctor knows that these organ groups (the brain, the heart, and the muscles) are especially sensitive to cellular energy levels, he believes he has found the answer.
Answers
Answer:
Nucleus due to being the control center it might not function correctly due to the fact that
it is the control center and the brain is as well...
Explanation:
Nucleus due to being the control center it might not function correctly due to the fact that it is the control center and the brain.
What is the function nucleus in cell ?The nucleus in eukaryotes are present at the central part of the cell, is the major functional organelle which store a cell’s genetic contents and it helps in cell growth, their function.
It plays an important role in reproduction, prokaryotic cell does not contain nucleus, it is also known as the “brain” of the cell and it control the growth and reproduction, largest and prominent organelle in the cell.
Eukaryotic cell have a single nucleus and have more than one nucleus; red blood cells don’t have a nucleus while muscle cells have multiple nuclei.
The organelle Nucleus have different components like Nuclear Envelope, Nuclear Pores, Nucleoplasm, Chromatin, Nucleolus.
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Look around and write down the name and symbol of elements that are present in your classroom.
Answers
Answer: Batteries, Lead Pencils and Electrical wires
Explanation: Lithium (Li) atomic no.3 is present in batteries. Lead pencils are made of graphite which is a form of carbon(C) atomic no.6. Electrical wires are made up of copper (Cu) atomic no.29
How do I answer this question?
Answers
Answer:
Use the six stages of methods below to identify which is what.
Explanation:
Which of the following can a chemical bond do?
A. All of these
B. Store energy
C. Change element properties
D. Release energy
Answers
which procedure involves examination of the angle of the anterior chamber to diagnose and manage glaucoma?
Answers
The procedure that involves examination of the angle of the anterior chamber to diagnose and manage glaucoma is called gonioscopy. Gonioscopy is a diagnostic test that is used to examine the angle of the anterior chamber of the eye.
This test is important in the diagnosis and management of glaucoma, which is a condition characterized by increased intraocular pressure that can lead to damage to the optic nerve and loss of vision. By examining the angle of the anterior chamber using a specialized lens, an ophthalmologist can determine the type of glaucoma and develop an appropriate treatment plan. Gonioscopy is typically performed during a routine eye exam and is a painless and non-invasive procedure.
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in 1935, Australian farmers brought an organism from south America to try to control the number of cane beetles. choose one organism from the south American food web that you think the farmers brought to try Australia to control the cane beetle. give one reason for your answer
Answers
Answer:
The cane toad
Explanation:
It is from south America.
It eats cane beetles.
I hope this helps...
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A motor unit consists of a:________
a: single motor neuron
b: neuromuscular junctions
c: muscle fibers
d: several motor neurons
e: a single muscle fiber
Answers
A motor unit consists of a single motor neuron.
What is a motor unit?
A motor neuron and all the skeletal muscle fibres it innervates, including the neuromuscular junctions where the neuron and the fibres join, make up a motor unit. When a single muscle is being contracted, a group of motor units frequently cooperate as a motor pool. Charles Scott Sherrington put forth the idea.
A motor unit contains only one type of muscle fibre. All of the fibres in a motor unit contract when it is turned on. The quantity of activated motor units determines the force of a muscle contraction in vertebrates.
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Help me! I don't know the answer to this problem I need severe help!
Answers
The figure below shows an experiment on photosynthesis. Rebecca observed that the part of the leaf outside the
bottle showed the presence of starch in it. The part of the leaf inside the bottle did not show the presence of starch.
When the same experiment was repeated without potassium hydroxide (KOH) in the bottle, the whole leaf showed the
presence of starch.
KOL
KOH
Water
What can Rebecca correctly infer about potassium hydroxide?
SC 912. L.18.9
It absorbs carbon dioxide
It releases oxygen
It produces water
It dissolves cells
Answers
Answer:A
Explanation:
It absorbs carbon dioxide
Answer: the answer is c: it releases oxygen
Explanation:
i took the test and studied
What is the kinetic energy of a 2,000 kg boat moving at 5 m/s
Subject: Science