Onion root tips contain cells that are constantly dividing. Why was it important to use the onion roots tips to observe chromosomes during mitosis rather than a cell from another part of the plant?
a. Because cells in the leaves do not have DNA or chromosomes.
b. Because chromosomes only form during mitosis, one part of cell division
c. Because root cells are naturally purple, so you can see the chromosomes
d. Because cells in the leaves only divide, but do not undergo mitosis.

Answers

Answer 1

Explanation:

the answer to your question is A

Answer 2

Onion roots are used to see mitosis because of rapid growth at the onion tips and at the stage of mitosis,leaves of the plants has division in the cells but there is no mitosis. the correct answer is option D.

What is the significance of mitosis ?

The significance of mitosis is that in the stage the chromosomes are paired and the pairing of this homologous chromosomes makes the chromosomes visible at the equatorial plate.

Leaves do not undergo cell mitosis as they do show the cell division  from various types of tissues but the mitosis is absent and the root cells show rapid division in the lateral sides and because of roots being the active site of division, these are considered more to see mitosis happening.

Thus, mitosis being absent in leaves takes the roots to be considered option.

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Related Questions

In eukaryotic mRNA, the parts that remain after processing and are translated into amino acid sequences are called the _____.

Answers

Answer:

Exons.

Explanation:

In mRNA maturation and processing, a complex called a splicesome essentially "cuts out", if you will, non-coding parts of the DNA sequence to be translated. The parts that are cut out are called "introns", and the parts that are left over that code for a protein sequence, are called "exons". Careful with the terminology. It seems counterintuitive that exons are the ones that stay (exon = exit? NO.) and introns (in, as in, stays in? NO.) are the ones that are cut out of the mature mRNA. Perhaps you can remember that the terms seem to be the opposite, that's how I remember it. Alright, good luck with all of this.

g. What is the function of CU? ​

Answers

Answer:

to give education ,to make all the people educated ,to make society good

The control unit (CU) is a component of a computer's central processing unit (CPU) that directs operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices how to respond to a program's instructions

Oi, Its worth 40 points, plus brainliest to best answer.


Use the graph and the information provided to answer the questions.
Stickleback fish protect themselves from predators with a thick covering of brownish plates. They feed on
small aquatic organisms and are preyed upon by bigger fish like trout. In a certain lake, the number of
stickleback fish was documented over a period of 30 years. During this time, the clarity of the lake water
also changed.



1. How did the occurrences of the different traits change over the 30-year period? Use evidence from
the graph to support your answer. Using what you know about natural selection and adaptation, what
generalization can you make based on these changes?

Answers

Explanation:

scam fakeeee

just kidding the answer is

every time the differences will change because of the large fishes which kill the small ones and the fishes het big like in one big fish there will be 100 of small fishes like the megladon

during this blood also leaks and the colour of the lake changes

Answer:

In each instance, the variations in fish populations are subject to change due to the predation of larger fish on smaller ones. As a result, the surviving fish grow larger, akin to the manner in which the Megalodon can have hundreds of smaller fish within its body. This process can also result in the release of blood, which has the potential to alter the color of the surrounding water body.

Explanation:

6. After a glacier melt what is the order of the appearance of organisms like
trees, grass, shrubs, and lichen? Put them in order of what appears first to the
last.

Answers

Answer:

grass, shrubs, lichens, trees.

When was Geoffrey Chaucer captured ?

Answers

Answer:

1359

Explanation:

We do not know any details of his early life and education. In 1357, he was a page to Elizabeth, Countess of Ulster, wife of Edward III's third son. Chaucer was captured by the French during the Brittany expedition of 1359, but was ransomed by the king.

please help me with insects with out piercing and sucking mouth parts and the reason why. please help me I really request.​

Answers

Answer:

Insects have a range of mouthparts, adapted to particular modes of feeding. The earliest insects had chewing mouthparts. Specialization has mostly been for piercing and sucking, although a range of specializations exist, as these modes of feeding have evolved a number of times (for example, mosquitoes and aphids (which are true bugs) both pierce and suck, however female mosquitoes feed on animal blood whereas aphids feed on plant fluids. In this page, the individual mouthparts are introduced for chewing insects. Specializations are generally described thereafter.

A reaction between an antibody and soluble antigen, forming larger, interlocking molecular lattices, is called a(n)

Answers

Answer:

Precipitation reaction

Explanation:

Answer:

agglutination

Explanation:

True or false: In a typical mammalian adult cell, the M phase takes up a large fraction of the entire cell cycle.

Answers

Answer:

True

Explanation:

Hope this helps! :D

BRAINLIEST AND 50 POINTS!!
Based on information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of rabbits?


Claws/Nails Feathers Jaws Lungs Mammary glands
Bird X X X X
Hagfish
Lizard X X X
Rabbit X X X X
Salamander X X
Tiger X X X X
Trout X


Image depicts a cladogram with hagfish, trout, salamander, lizard, bird, rabbit, and tiger represented. Trout diverge from hagfish with the introduction of jaws. Salamander diverges from trout with the introduction of lungs. Lizard diverges from salamander with the introduction of claws and nails. Bird diverges from lizard with the introduction of feathers. Rabbit and tiger diverge from lizard with the introduction of mammary glands.
They are more closely related to tigers than they are to birds.
They became able to produce mammary glands as a result of lacking feathers.
They evolved into a separate species due to the presence of mammary glands.
They share a more recent common evolutionary ancestor with salamanders than they do with lizards.

Answers

Answer:

A. They are more closely related to tigers than they are to birds.

Explanation:

Short answer: I took the test

Actual explanation:

-If you look at the first graphic that you have, you will notice that rabbits and tigers have all the same boxes checked off. AND birds and rabbits only have 3 checked off.

-salamanders actually have less in common with rabbits than they do with lizards, salamanders have 3 things in common, and lizards only have 2, proving option D. wrong. (if you are wondering where I got that evidence, look at the chart) AND if you look at the cladogram, lizards are closer to the rabbits than salamanders meaning that lizards have a more common ancestor (I think?) But nevertheless, it it still wrong, because of the above evidence.

- The options with mammary glands are also incorrect for these reasons, B. makes no sense, literally no sense, why would not be able to produce mammary glands with feathers, so B, is automatically out. With option C, rabbits did not evolve into a whole new species, it is the clade showing that tigers and rabbits both have mammary glands. There is no showing of a new species on the cladogram, and I don't think that it makes sense to evolve into a whole species just because of mammary glands.

- Now, if you look at the cladogram again, you wills see that tigers and rabbits are closest together, meaning that they are closely related. BUT, birds and rabbits are also the closet together, so, refer back to point a, that the chart shows that birds only share 3 out of the 4 that rabbits and tigers share. so that's that.

So after doing the work, option A. Rabbits are more closely related to tigers than they are birds. (and If you read my long explanation THANK YOU I put time and effort into it to make it accurate :))

Hope this helped :))                                                                                                    ~addison

Answer:

A. They are more closely related to tigers than they are to birds.

Option A. Rabbits are more closely related to tigers than they are birds.

Explanation:

I have a shorter answer.

two impacts of climate change on agriculture.​

Answers

Answer:

OKAY FIRST IMPACT:

Crops either get to much sunlight during droughts or to much water during floods

SECOND IMPACT:

Crops may not have the right amount of nutrients or vitamins because of heat produced by the sun every day

BRAINLIST ???

why it is important that the product of mitosis are two identical daughter cells.

Answers

Answer: Mitosis involves the division of a cell into two identical daughter cells. Each daughter cell needs a copy of every chromosome, so the process begins with cutting the chromosomes into manageable copies, so the process involves copying the chromosomes and then separating them and then so each cell has the full set. chromosomes have exactly 23 pairs of chromosomes, its hard to remember because you can also say 46 chromosomes but never say 46 pairs because doing so will result into you saying 92 chromosomes. you can either say 23 pairs or 46 chromosomes.

Hope it helps,

If you can play please me for Brainliest.

Explanation:

What type of solution causes a cell to shrink in size?
O Isotonic
O Homeotonic
O Hypertonic
O Hypotonic

Answers

Hypertonic C. I think answer correct.

Given that breaking bonds requires energy and forming bonds releases energy, explain how we know that cellular respiration releases energy overall?

Answers

Cellular respiration releases energy because the bonds in carbohydrates are broken during the reaction.

During cellular respiration, carbohydrates are broken down in a series of reactions, and the energy in the bonds is released as ATP, the energy currency of cells.

The reaction is in 3 steps:

GlycolysisKreb's cycleElectron transport chain

The summary of the reactions is represented by the equation below:

[tex]C_6H_1_2O_6 + 6O_2 ---> 6CO_2 + 6H_2O + ATP[/tex]

More on cellular respiration can be found here: https://brainly.com/question/23787978?referrer=searchResults

Help meeeeeeeeeeeeee

Answers

Answer:

1)sunlight and co2

2)oxygen and ?

Explanation:

Using specially designed bacteria to clean up environmentally hazardous radioactive waste would be an example of __________.

Answers

Answer:

xjsdhmbjv

Explanation:

All nine essential amino acids can be found in meat. By employing the nutritional principle of complementarity, a vegetarian gets all nine. What is complementarity

Answers

Answer:

All 9 essential amino acids can be found in meat. By employing the nutritional principle of complementarity, a vegetarian gets all nine. What is complementarity? Combining foods that complement each others essential amino acids.

Explanation:

I hope this helps!

Biology questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Answers

Answer:

3rd one

Explanation:

Answer:

c. firewood

Explanation:

its a chemical reaction

__________ are intestinal parasites that can live up to 20 years and grow up to 50 feet in length. A. Toxoplasmosis B. Amoebae C. Malaria D. Tape worms Please select the best answer from the choices provided. A B C D.

Answers

Answer:

D. Tapeworms

Explanation:

I took test EDG2022

what is the texture of a worker bee leg.​

Answers

The texture of a bee leg is like a shiny gloss to it with tiny fine hairs all over it so that pollen will stick.

Why does each offspring get 2 alleles for a trait?

Answers

During meiosis, chromosome pairs are split apart and distributed into cells called gametes. Each gamete contains a single copy of every chromosome, and each chromosome contains one allele for every gene. Therefore, each allele for a given gene is packaged into a separate gamete.

are there other tests that could be used to determine if cyclohexanol is present in your product? give at least one test with some detail of the expected result for the presence of cyclohexanol.

Answers

One of the many tests that may be used to identify the presence of cyclohexanol in a product is that of the Lucas test.

The Lucas test is a chemical reactant test to determine the presence and level of alcoholism in a solution.  Cyclohexanol has many chemical properties as do most substances, one of which is the presence of an alcohol group.

The presence of this chemical group makes it possible to test for cyclohexanol using the Lucas test. The Lucas test will cause reactions in the presence of alcohol and transform alcohols into chloroalkanes, which tend to be nearly insoluble in aquatic solutions. Given this, a positive result will look like the solution separates into a cloudy chloroalkane-containing part on top of a much clearer layer.

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How can we conserve WATER? describe in short.
Please answer as soon as possible pls I need help please ​

Answers

Explanation:

Turn off the faucet while brushing your teeth.

Only run the washing machine and dishwasher when you have a full load.

Use a low flow shower head and faucet aerators.

Fix leaks.

Install a dual flush or low flow toilet or put a conversion kit on your existing toilet.

anyone help me? 1 number 2​

Answers

Answer:

i dunno what class is this of, so tell me in the comment and I may rectify my answer according to that.

btw here u go

Explanation:

in q 1, part a, we need to tell what we observed in the growth of plants. we observed that the plant h was groing faster and healthier that plant g due to the fact that it was provided with a nutritive solution.

in its part b, we write the conclusion, i.e the plant which was provided with a nutritive solution grew more as all minerals required by the plants were replenished properly.

In q2, part a, we just compare their physical properties such as the plant g was not as healthy as plant h and plant h grew faster and taller than plant g.

in q2, part b, we just write what the solution is supplying the plant with, you can also check each one of their speciality on the web and write it also.

hope it helps

;)

40 Points to answer this question in complete sentences
How has the global climate changed in the last century? What has the greatest impact on the climate where you live? Have humans influenced the climate on Earth? If so, how and what should we do?

Answers

Answer:

Over the last century, the average temperature on the surface of the Earth has increased by about 1.0 degrees F.   The greatest impact is the droughts that my state is constantly in. I believe that we had a great part in global climate change. How I think that we have is all the air pollution and not taking care of out earth the way we should.  How I think that we can fix this is if we start powering our home with more solar. We can also reduce the amount of water that we use.  

Explanation:

How much work does an elephant do while moving a 50 N circus wagon 20 m?​

Answers

Answer:

The elephant did 4000 N·m or 4000 J or 4 kJ of work

Explanation:

Match each part of the urinary system with the correct label.

Answers

Answer:

1 Kidneys

2 Ureters

3 Bladder

4 Urethra

Explanation: are correct in edg

If the alleles of two different genes are present on the same chromosome, the closer they are to each other the more likely they are to ________________________________ during gamete production.

Answers

If two alleles of different genes are in close proximity with each other on the

same chromosome, they would most likely link during gamete production.

Meiosis is the type of cell division that takes place in gamete( sperm and egg cells) production. The alleles are responsible for the phenotype of an

organism.

When alleles are in close contact on the same chromosome they are most

likely to be linked together and transmitted as a single unit . These brings

about variation between parents and daughter cells in some features such

as color, height etc

Read more on  https://brainly.com/question/25512469

help plz and thank you

Answers

Answer:

A

Explanation:

A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.

B) not all cells have a nucleus. For example, prokaryotes have no nucleus

C)Not all cells have a cell wall.(Animal cells don't)

D) not all cells have mitochondria (Prokaryotes don't)

Answer:

I think it is D

Explanation:

Sorry If I'm wrong

Where does mixed livestock and crop farming predominantly occur?

Answers

Answer:

Asia and in countries such as India, Malaysia, Indonesia, Afghanistan, South Africa, China, Central Europe, Canada, and Russia.

Explanation:

12. Having tissues that digest food, such as in the jellyfish, is an example of

(a) cell-level organization.

(b) tissue-level organization.

(c) organ-level organization.

(d) organ system-level organization.

Answers

Answer:

cell level organization

Having tissues that digest food, such as in the Jellyfish, is an example of cell-level organization.

What is Jellyfish?

Jellyfish is are aquatic organisms that live in marine and freshwater habitats.

Jellyfish are tentacular species(i.e. they have tentacles that allow them to capture prey) and their body consists of a jelly-like structure that is non-living in nature called mesoglea.

Jellyfish are at the cellular level of organization and their mode of feeding entails some of the following:

Predation (capturing of preys with the use of their tentacles)Filtration of particles through waterNutrient intake via symbiotic association with algae within their cells

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