Câu 6: Gà có 2n =78. Vào kỳ trung gian, sau khi xảy ra tự nhân đôi, số nhiễm sắc thể trong mỗi tế bào là:
A. 78 NST đơn. B. 78 NST kép. C. 156 NST đơn. D. 156 NST kép.

Câu 7: Ở người (2n = 46), số NST trong 1 tế bào tại kì giữa của nguyên phân là:
A. 23 NST đơn. B. 46 NST kép. C. 46 NST đơn. D. 23 NST kép.

Câu 8: Ở ruồi giấm, có bộ NST 2n = 8 vào kỳ sau của nguyên phân trong một tế bào có:
A. 8 NST đơn. B. 16 NST đơn. C. 8 NST kép. D. 16 NST kép.

Answers

Answer 1

Answer: 6A 7D 8B

Explanation:


Related Questions

PLLZZZ HELP!!

 Diagram the alternation of generations life cycle of a plant. Put the following terms in order and type arrows (>) between the terms to show which direction the life cycle is going: sporophyte, gametes, gametophyte, spores, meiosis, sporangium. Label which parts are haploid and which parts are diploid. You may also list the terms in numerical order.

Answers

Answer:

i know that gametes and meiosis are both haploid, but i havent heard of the others yet, i cant help you there :/

ruth is presenting the feedback model to her class help her complete the statements

Answers

Answer:

Feedback models are tools that provides specific, concise, and clear feedback for a particular thing.

Explanation:

Feedback models are tools that provides specific, concise, and clear feedback for the organization so that an organization can make useful changes which is necessary for the organization growth and development. There is high need of this feedback model which helps us to know about the specific areas where one needs to improve performances in order to work more effectively.

How do DNA and RNA differ?

Answers

Answer:

DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.

Answer:

DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. DNA is a double-stranded molecule, while RNA is a single-stranded molecule. DNA is stable under alkaline conditions, while RNA is not stable. DNA and RNA perform different functions in humans.

Explanation:

There is a U-tube in which solutions in two arms A and B are separated by a membrane. Arm A contains glucose with concentration of 0.4 mol per liter and sodium chloride with concentration of 0.5 mol per liter. Arm B contains glucose with concentration of 0.8 mol per liter and sodium chloride with concentration of 0.4 mol per liter.
The solutions in the arms of a U-tube (the figure) are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl), and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same.

If you examine side A in the figure after three days, the concentrations of glucose and NaCl should be _____________.

Answers

Answer:

0.4 M glucose, 0.45 M NaCl

Explanation:

I hope this helped!

wirte 2 slogans on 'need to conserve nature? ​

Answers

Answer:

Tree planting is the safest solution to pollution. Save the earth, save our environment. Don't be cruel, conserve your fuel.

Answer:

Explanation:

1. Save plants, save nature

2. Don't let mother nature become a "once upon time"

Why is the sequence of amino acids important to the properties of a protein?

It provides structural support; the structure determines the function.
It retains and transmits important biological information.
It stores energy and provides covering to avoid water loss.
It stores energy and provides structural support for cells.

Answers

Answer:

it provides structural support, the structure determines the function

Answer:

it provides structural support, the structure determines the function

Explanation:

took the test and I got it right :) happy learning everyone

When calcium carbonate is heated, it
decomposes into calcium oxide and carbon
dioxide. If 100 g of calcium carbonate are
decomposed, 56 g of calcium oxide is produced.
What would be the mass of the carbon dioxide
given off by the decomposition?
A. 448
B. 110 g
C. 156 g

Answers

Answer:

A. 44 g

Explanation:

First, you need to write a balanced equation:

CaCO₃ -> CaO + CO₂

Then, you need to find the molar mass of CaCO₃:

Ca = 40.078 amu

C = 12.0107 amu

3O = 47.9982 amu

_________________

100.0869 amu

Then, you calculate the moles of CaCO₃:

100 g ÷ 100.0869 amu = 0.9991 moles

In the balanced equation, we can see that the molar ratio of CaCO₃ and CO₂ is 1 : 1, so moles of CaCO₃ = moles of CO₂.

Now you need to find the molar mass of CO₂:

C = 12.0107 amu

2O = 31.9988 amu

________________

44.0095 amu

Finally, you can calculate the mass of CO₂ produced:

0.9991 moles * 44.0095 amu = 43.9698 g = 44 g

A child is suffering from fever but the doctor cannot immediately pinpoint the ailment on the basis of this one symptom. Explain why. Also mention another two such general symptoms.​

Answers

the child can also have sore and or maybe stomach problems. it can be indigestion

so there are various conditions one can go through and this may take time for a doctor to discover or bring to light the medical condition that the person I'd goin thru

Explanation:

please notify me if I'm incorrect

During starch test why is leaf boiled in ethanol?
A) to kill its Protoplasm
B) to soften it
C) to extract its chlorophyll
D) to retain its starch

Answers

Answer:

think its C cause when you boil it almost loses all its colour

diffrences between pine tree and mango tree​

Answers

well ones a pine tree, and ones a mango tree

Answer:

A:pine tree is also know as Christmas tree

Explanation:

B:mango tree is broad andextremly big

Question 4
What happens to the host cell at the end of the lytic cycle?
the cell breaks open and releases the new viruses
viral DNA combines with host DNA
the host cell divides normally and reproduces viral DNA along with it's own
new viruses are made inside the bacterial cell

Answers

Answer:

In the lytic cycle, a phage acts like a typical virus: it hijacks its host cell and uses the cell's resources to make lots of new phages, causing the cell to lyse (burst) and die in the process.

Explanation:

Hope this helps.

Osteoporosis is a disease that affects the bones and leads to an increase in bone fractures. Osteoporosis is most likely
to be affected by which cycle?

Answers

Answer:

osteoporosis is most likely to be affected by phosphorus.

I hope this helps

trong chương trình lớp 7 các em đã học các ngành động vật nào?

Answers

Answer:

what's this can u explain me in hindi pls

Question 8 of 10
A biologist measures the allele frequencies of pea plants in a very controlled
environment. The plants can either have a dominant tall allele (7) or a
recessive short allele (t). Which of the following would be a reason that this
population is not at Hardy-Weinberg equilibrium?
O A. There are no mutations in the alleles for height.
B. Tall plants are more likely to survive.
O c. All of the pea plants reproduce exactly once.
O D. The pea flowers are pollinated at random.

Answers

Answer:

 C. Tall plants are more likely to survive (

Explanation:

b) Describe two measures each to conserve natural vegetation and wildlife, Class 8 - Geography - Unit 1 betwen 90to100 words​

Answers

Answer:

Afforestation and national sanctuaries are two measures each to conserve natural vegetation and wildlife.

Explanation:

The natural vegetation and wildlife restoration is one of the main concerns that are essential for the development and growth of a country's biodiversity. Due to human land-use changes and migration of people, from one place to another with their cattle, lands are becoming deserted and grassland and forest land are declining.  

So, we need to plant more trees that act as the natural habitat for the wildlife and preserve and conserve them in parks and sanctuaries which will help reduce the impacts of global warming and climate change. We should not kill any animal.We should decrease the use of plastics.

hello anyone online

answer me​

Answers

No definitely not online

The meaning of the term ionic bond

Answers

It is a type of bond that takes place between positively and negatively charged ions. Example on that is sodium chloride

Answer:

A type of Chemical Bonding that includes electrostatic attraction between opposite ions.

Explanation:

Ionic bonds are the attraction of two opposite ions.

An ion is an atom that has a net electric charge.

Explain why your model improves upon the student’s original model. How would your model help someone who was learning about photosynthesis for the first time? Plato question

Answers

Answer:

Due to inclusion of more steps of photosynthesis.

Explanation:

My model is more advance than the student's original model which provides more information about the process of photosynthesis to the learners by explaining various parts of photosynthesis. My model presents the various steps of photosynthesis in a very efficient way with the help of including some extra parts. The student's original model is not more advance so it can't provides more information about the process of photosynthesis so that's why my model provides more information about photosynthesis.

Answer:

This model shows all the major molecules involved in the Calvin cycle and how they change at each stage of the process. This added detail would clarify that the Calvin cycle is a series of complex steps. The student’s original model didn’t show this breakdown at all, and it shows only the final products. This model also shows the number of each molecule created, which the original model doesn’t do.

Harry is doing a research project on the movement of plants from the ocean to land. He leaned that plants evolved
vascular tissues, which enabled them to pull water from the ground and survive on land. Which is most likely
another adaptation that contributed to the success of land plants?

cell walls?
chloroplasts
waxy cuticle
gametes

Answers

Answer:

Waxy Cuticle

Explanation:

Waxy Cuticle retains water. It's the closest in terms of surviving on land. For instance, the plants living in water do not need waxy Cuticle to retain or maintain water. The plants on land requires waxy Cuticle because the temperature is hotter than in the water and they are at higher risk of loosing water during hot seasons and climate. waxy Cuticle aids in their water retention allowing them to adapt to live on land.

Sheets composed of two layers of amphipathic molecules arranged with the hydrophilic groups on the surface and the hydrophobic groups buried in the center that form in water are called A) micelles. B) liposomes. C) vacuoles. D) bilayer membranes. E) none of the above

Answers

Answer:

D) bilayer membranes

Explanation:

Two lipidic bilayers compose the cell membrane. There are also proteins and glucans incrusted in between. Lipids are amphipathic molecules with hydrophilic heads -negatively charged phosphate group- and hydrophobic tails. Lipids are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane. Membranes are fluid, which means that the composing molecules can move through them.

Lipids can easily change places with other neighboring lipids by lateral diffusion in the same layer. This is passive diffusion, which means that it does not need energy to happen.

Lipids can also diffuse transversally to the other layer but not as easily as lateral diffusion. Jumps between monolayers are infrequent as the lipidic polar heads meet the fatty acid barrier.

There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.  

Equilibrium is when the concentration is the same throughout an entire system. Explain how a cell reaches equilibrium in all three types of solutions (hypertonic, hypotonic, and isotonic).

Answers

It is pertinent to understand what hypertonic, hypotonic, and isotonic solution means before setting out to explain how a cell reaches equilibrium in each type of solution.

A hypertonic solution is one whose solute concentration is higher than that of the sap of a cell that is immersed in it.A hypotonic solution is one with the same solute concentration as that of the sap of the cell immersed in it.An isotonic solution has a lower solute concentration than that of the sap of the cell immersed in it.

In biological systems, water molecules move by osmosis from the region of higher water potential or lower concentration of solutes to the region of lower water potential or higher concentration of solute. An equilibrium is reached when there is no net movement of water between two sides. Hence;

A cell placed in a hypertonic solution will lose water to the surrounding solution until an equilibrium is reached. This means that such a cell will end up shrinking (wilting) or even dying due to loss of water from the cell sap.A cell placed in a hypotonic solution will gain water from the surrounding solution until there is no net movement of water anymore. Such a cell might become turgid or even burst out its cell content.A cell placed in an isotonic solution will neither gain nor lose water because the cell sap and the surrounding solution have equal solute concentrations.

More about osmosis here: https://brainly.in/question/1213189

Answer:

A cell placed in a hypertonic solution will lose water to the surrounding solution until an equilibrium is reached. This means that such a cell will end up shrinking (wilting) or even dying due to loss of water from the cell sap.

A cell placed in a hypotonic solution will gain water from the surrounding solution until there is no net movement of water anymore. Such a cell might become turgid or even burst out its cell content.

A cell placed in an isotonic solution will neither gain nor lose water because the cell sap and the surrounding solution have equal solute concentrations.

Explain osmosis using this image

Answers

Answer:

A liquid moving from an area of low concentration, to an area of high concentration through a semi-permiable membrane.

Explanation:

Hope this helps :)

A _____ country has high population density.

A: Densley populated country
B: Sparsely populated country
C: Open country
D: Overpopulated country

Answers

Answer:

A. A Densley populated country.

Explanation:

Questions for Activity 3: Making Molecular Models of Aerobic and Anaerobic Respiration

Text BoxDraw what you think the models of aerobic and anaerobic respiration would look like if you constructed them using models like in figures 3-6

Answers

kaka ddjzomssomx dmdxjsomdmsxk

Irineu vc não sabe nem eu

sksosmmsos!s s s s s. s sim cofmc. kc c. ocmc c. ximc.

heheheheheheheheheheeheheheeheh

sou toxic

toma trou xa deu mtos pontos atoa kakakakakaja

Which of the following represents a tragedy of the commons?
Plastic trash in the neighborhood park
Two hospitals for the town's residents Trash pile in a person's backyard
Not enough fruit at a local market​

Answers

Tragedy is when a person feels distress due to some event or something. There can be various tragedies a person might face in his life.

In a persons life tragedy might represent an event which causes an unhappy feeling or emotional distress.

This also represent a situation which every one wants to avoid, no one welcomes a tragic event with happiness or joy.

The most annoying tragedy is a trash pile which is stinking in the backyard. A person will have to remove the pile so that the there is less pollution.

The correct answer is Trash pile in a person's backyard.

Learn more at https://brainly.com/question/24384533

Answer:

it is Plastic trash in the neighborhood park

Explanation:

tragity of the colloms means a problem in which every individual has an incentive to consume a shared resource, but at the expense of every other individual, depleting or spoiling the shared resource by their collective actions. SOO YEA SORRY ABT THAT OTHER GUY >:)

Sometimes the most practical way to do an experiment is not to perform it in an animal, but to look at cell responses in culture. Cells from mice, humans, and other mammals have been used to establish cell culture lines that have been very important for research. You are studying a novel water-soluble mouse hormone. You know cell culture can be a practical model to reveal protein function, so you apply the hormone to yeast cells, but nothing happens. What is a likely explanation for why nothing happened in your experiment

Answers

Answer:

Yeast cells likely do not have receptors that bind to this specific water-soluble mouse hormone

Explanation:

Receptors are molecules capable of binding specific signaling molecules (i.e., ligands). For example, steroid receptors can only bind to specific steroid hormones (e.g. estrogen, progesterone). Plasma membrane receptors are protein receptors that bind to water-soluble ligands. These receptors are embedded in the cell plasma membrane and usually contain several transmembrane domains. Examples of cell membrane receptors include G protein-coupled receptors (GPCRs), enzyme-linked protein receptors and ion channel receptors.

Water pollution is an environmental factor due to rapid population growth.(True or False)?​

Answers

Answer:

False

Explanation:

Water pollution is caused by factory workers

Does anyone know the answer for the question four?

Answers

Answer:

I think it's A

Explanation:

it is because the populations of trees are decreasing as deforestation continues, so there is less resistance to greenhouse gases. please correct me if I'm wrong

how does a classification key help identify an organism , help me please

Answers

Answer:

Classification keys are tools that provide a means to correctly identify different organisms, based on observable traits. A dichotomous key is a listing of specific characteristics, such as structure and behavior, in such a way that an organism can be identified through a process of elimination.

The vertebrate digestive system consists of a two-way tube with
A. a separate mouth and anus and accessory organs.
B. a one-way tube with a separate mouth and anus and accessory organs.
C. a two-way tube with a separate mouth and anus.
D. a tube with a single opening that serves as mouth and anus.
E. a one-way tube with a separate mouth and anus and no accessory organs.

Answers

[tex]Hello![/tex]

It's option B.

I'm sure about that.

The vertebrate digestive system consists of a two-way tube with...[tex]ANSWER:[/tex]

B. A one-way tube with a separate mouth and anus and accessory organs.

Other Questions
What is the magnitude of the force between a 25C charge exerts on a -10C charge 8.5cm away? state whether the following statement are true or false [tex]\frac{1}{5} x + \frac{4}{5} = \frac{8}{5}[/tex] Sports Corp has 11.7 million shares of common stock outstanding, 6.7 million shares of preferred stock outstanding, and 2.7 million bonds. If the common shares are selling for $26.7 per share, the preferred share are selling for $14.2 per share, and the bonds are selling for 96.83 percent of par, what would be the weight used for common stock in the computation of Sports's WACC JPL Company has two segments - Retail and Commercial. The Retail segment has a contribution margin ratio of 40% and traceable fixed expenses of $70,000. Commercial has traceable fixed expenses of $50,000 and a contribution margin ratio of 55%. The company also has $30,000 of common fixed expenses. The break-even point in dollar sales for the Retail segment equals: Multiple choice question. $212,500 $116,667 $175,000 $250,000 Piper Inc. is a large cosmetics company that made an initial small investment in a start-up company, Oscorp, which was developing an organic face lotion. This gave Piper controlling interests in the start-up company. However, Oscorp soon began to have financial difficulties because of principal-agent problems. As a result, Piper did not invest in the next stage of development and pulled out of the company. This approach to strategic alliance is referred to as a Trong mt lp hc c $35$ sinh vin ni c ting Anh, $25$ sinh vin ni c ting Nht trong c $10$ sinh vin ni c c ting Anh v ting Nht. Mi sinh vin trong lp ni c t nht mt trong hai: ting Anh hoc ting Nht. Hi s s ca lp l bao nhiu For the function f(x) = x^2 + 4x -5 solve the following f(x)=0 Use Pythagoras to find the height and hence, the area of the trianglebelow. Give height to 1 decimal place and area to the nearest whole. Writeanswer in format: h= A= *20 mmVal Identify the number as prime, composite or neither. If the number is composite, write it as the product of primefactors.18 find the slope of a line perpendicular to each given line number 11 Which example most clearly describes part of a rhetorical situation?A. The groupof people a presidential candidate is speaking toO B. A public speaker's use of ethos, pathos, and logos to persuade C. The sarcastic tone of a speech about the dangers of pollutionO D. Words like fiend and crook that try to provoke emotions Translate this phrase into an algebraic expression. Five more than the product of 8 and Vanessa's savings Use the variable v to represent Vanessa's savings. HELP ASAP PLS Reactions, products and leftovers 10000-10000+100000-100000 please help, I'm so confused how to-do this Which statement BEST describes life in the Soviet Union under totalitarian leader Joseph Stalin? President George W. Bushs speech to the troops on the USS Abraham LincolnOther nations in history have fought in foreign lands and remained to occupy and exploit. Americans, following a battle, want nothing more than to return home. And that is your direction tonight. After service in the Afghan and Iraqi theaters of war after 100,000 miles, on the longest carrier deployment in recent history you are homeward bound. Some of you will see new family members for the first time 150 babies were born while their fathers were on the Lincoln. Your families are proud of you, and your nation will welcome you.Which answer is a complete and correct summary of this part of the speech? Afghanistan and Iraq are many miles from America, but they have had a major impact on the country. Over a hundred children were born while their fathers were serving far away from home. September 11 was a tragic time for all service men and women of the United States of America. Unlike other countries that stay, it is time for these people in service to return home from war. (6) Mention the role of School Children to reduce nois Pollution divide the numbers 1 to 8 by 9. observe the decimal and discuss your observation of non terminating recurring decimal