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lora16 [44]
2 years ago
13

How is dna organized in the nucleus when the cell is prepared for division? how is dna organized in the nucleus when the cell is

not dividing?
Biology
1 answer:
zaharov [31]2 years ago
5 0

In the nucleus, DNA is often found wrapped up and linked to a variety of histone proteins in a structure called chromatin that is loosely confined. Chromatin coils tightly and condenses to produce chromosomes just before a cell divides.

Chromosomes do not form from DNA when cells are not dividing. Instead, it is discovered in a looser form known as chromatin. Contrary to chromosomes, chromatin is DNA in an uncondensed form and lacks a recognisable structure. The nucleus of eukaryotic cells houses chromatin.

Chromosomes in eukaryotic cells are made of chromatin, a compound of DNA and proteins. Nuclear DNA is extremely compressed and wrapped around nuclear proteins in order to fit inside the nucleus; it does not exist as free linear strands. There are two varieties of chromatin.

To learn more about chromatin, refer from

brainly.com/question/11073325

#SPJ4

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A student poured a solution of bromothymol blue indicator into three test tubes. Then he placed an aquatic plant in two of the t
olasank [31]

The question is incomplete. The complete question is - A student poured a solution of bromthymol blue indicator into three test tubes. Then, he placed and aquatic plant in two of the test tubes, as shown below. He placed a stopper on each test tube and placed them all in the dark for 24 hours. Brothymol blue turns from blue to yellow in the presence of CO2.

Which process would you expect the organisms in the test tubes to carry out-- cell respiration, photosynthesis or both? When would you expect each process to occur?

Answer:

Photosynthesis is the process of the formation of the food in case of plants in the presence of sunlight with the help of carbon dioxide, water and soil. The light energy is converted into the chemical energy.

The beaker is blue because plants uses carbon dioxide for their food preparation. When the beakers are kept in the dark place, instead of photosynthesis cellular respiration occur that made energy from the food for their survival.

6 0
3 years ago
What advantage do invasive species of plants have over native species?.
alexandr402 [8]
They are better competitors because they emerge earlier in the spring, grow rapidly, and are impacted by few, if any, natural predators. When invasive plants are allowed to grow unchecked, many native plants and the wildlife species that rely upon them suffer.
7 0
2 years ago
Any two differences between plant cells and animal cells
Natali5045456 [20]

Answer:

A plant cell is surrounded by rigid cell wall whereas animal cell does not have cell wall. Presence of a large vacuole in plant cell, which is small in animal cell. Plant cells are larger than animal cells. Plant cells have plastids whereas animal cells do not have plastids.

8 0
3 years ago
Read 2 more answers
6. What are proglottids? What is the scolex?
Nataliya [291]

Explanation:

Proglottids are segments in cestodes that contain bot the male and female reproductive organs. These segments go ahead to make eggs and then dettach form the worm. They are excreted and become agents of infection on the next hoist. Proglittids formed near the neck of the worm are immature while those at the tail end are literally bags of mature eggs.

The scolex is the head of the worm that is attached to the host. It is also the part that ‘sucks’ nutrients from the host. It has hooks that it uses to anchor itself in the host. In some species, rather than hooks, there are suction-cups that use suction for anchorage.

Learn More:

For more on cestodes check out;

brainly.com/question/14565928

#LearnWithBrainly

8 0
3 years ago
Doing what phase in the cell cycle is the dna Replicated
Vanyuwa [196]
During interphase, the cell grows and builds the nutrients required for the stage called Mitosis that prepares it for cell division and manipulate the dna
5 0
3 years ago
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