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Aneli [31]
2 years ago
6

Which of the following statements about functional nuclear domains is correct? Choose all that apply.-There is a single function

al domain where all nuclear activity occurs.-They provide localized regions of function.-They are sites of low activity.-They are highly discrete and organized.-They refer to protein domains encoded by genomic DNA.
Biology
1 answer:
gregori [183]2 years ago
8 0

The correct answers are: They provide localized regions of function and They are highly discrete and organized

Nuclear domains or bodies are membraneless structures within the nucleus that make nucleus compartmentalized. The function of these “compartments” is to enhance the efficiency nuclear processes. Nuclear bodies include:

• the nucleolus-the place where ribosome biogenesis occurs.

•  Cajal bodies- consist of proteins and RNA; its functions are associated with telomerase assembly; in cells that divide rapidly

•  splicing speckles –contain RNA splicing factors

• promyelocytic leukemia protein nuclear bodies-involved in programmed cell death; control cell division.

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Spontaneous mutations occur most commonly as a result of _________________________ .
Ray Of Light [21]
Errors during duplication, errors during recombination, the movement of genetic elements, and dna damage
4 0
1 year ago
List all four body systems that make up the excretory system and give an example of how each body system eliminates waste.
mart [117]

Answer:

Organs of excretion make up the excretory system.

They include the :

kidneys-Blood by-products are filtered out by the kidneys and leave the body in urine form. They are part of the urinary system, which also includes the ureters, bladder, and urethra

large intestine-By-products enter the intestine and leave the body in the form of feces

liver- breaks down harmful substances. It's by-products are excreted into bile or blood.

skin-Sweating eliminates excess water and salts, as well as a small amount of urea, a byproduct of protein catabolism

lungs- oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled

Hope this helps!!!!!!

Forever friend and helper,

Cammie :)

4 0
3 years ago
Two organisms have analogous structures. A student concluded that these organisms must have a common ancestor is the student cor
arsen [322]

Answer:

The student is wrong, just because the analogous structures of any two organism may have the same structure or even have the some relation between there way of operation or functions.

Explanation:

  • <u>Analogous Structures:</u>

As the similarity between two or more different organisms structure or any organ does not means that they have same ancestors or have the common origin from which the evolve into two different species. Now analogous structures are very much similar in there structure physically, but two different organisms may use them for the same function, which is astonishing to see or observe in way different species.

  • <u>For example:</u>

As the structure of the flipper of a Dolphin has similarity with the phalanges of a human being and with the wings of the bat. As all of them functions for the basic need of movement or locomotion from one point to another. While, all the three species are very much different in there features and are not the same obviously.

<u></u>

4 0
3 years ago
An infant is born in the breech position, and assessment indicates the presence of erb palsy (erb-duchenne paralysis). which cli
Marina86 [1]
The clinical manifestation which supports this conclusion is that an injury to the brachial plexus which happens during birth. Erb is termed as a paralysis of the arm which is caused by an injury on upper arm's main nerves to be specifically the C5-C6 nerves.
It arrives most commonly on shoulder dystocia when there is a difficult birth. This paralysis can resolve on its own depending on nature of the damage.
6 0
3 years ago
Why is it important for plants to “hold enzymes in their functional shapes”
Svetllana [295]
<span> because if the shape of the enzyme changes it may not function or it may function differently.
hope this helps</span>
7 0
2 years ago
Read 2 more answers
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