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lora16 [44]
1 year 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]1 year 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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Periaqueductal gray neurons send descending axons into various regions of the medulla releasing serotonin.
Evgesh-ka [11]

Answer:

True

Explanation:

Periaqueductal gray matter is found in the middle portion of brain.  When this grey matter is stimulated it activates neurons that releases enkephalin. Enkephalin further direct the stimulation to the raphe nuclei  with in the brain stem that releases serotonin. In this process, the ascending and descending axons are released  from  

a) subcortical nuclei

b) spinal trigeminal nuclei  

c) the spinal cord

Hence, the given statement is true

5 0
2 years ago
The ___________ is an important element of the drug experience because it affects how much of a drug reaches its site of action
Marysya12 [62]

Answer:

Route of administration

Explanation:

Drugs may be defined as the chemicals that are given against the particular disease for the treatment of the patient. The drugs must be given in the proper amount as directed by the medical practitioner.

The effects of the drugs depend on the individual and its route of administration. The oral administration of drug is more common but a diabetic patient needs to given drug intravenously. Intraperitoneal drug route is given to show the effect of drug quickly and drug cannot infiltrate a blood vessel.

Thus, the answer is route of administration.

7 0
3 years ago
Enteric bacteria most useful in the routine monitoring of microbial pollution are gram-negative rods called?
babunello [35]

E-coli bacteria which most useful in the routine monitoring of microbial pollution are gram negative rods and this is common indicator organism of water contamination.

It is important to identify enteric bacteria which is one of the major causes of diarrhea disease is bacteria and that detection of pathogenic bacteria is a global key to the prevention and identification of food borne diseases and enteric infections like diarrhea.

The extent of water  contamination can be measured using these indicator organisms. This fecal coli-form group has been used as the most common indicator of general wastewater contamination because they are abundant and easy to identify.

To learn more about E-coli bacteria here

brainly.com/question/18722309

#SPJ4

8 0
1 year ago
Why does geological isolation cause speciation
Irina18 [472]

Because since the species is isolated with its partners it has to find another way to multiply so it uses another animal to make a new species to stay alive

5 0
3 years ago
Read 2 more answers
Does the law of reflection hold true for mirrors that aren’t flat ?
aniked [119]
YES!! At each point on the mirror, imagine that there is a very small flat piece of mirror that is tanger to the surface there. I hope this work for you:)
6 0
2 years ago
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