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sweet-ann [11.9K]
2 years ago
5

Please Help.

Biology
1 answer:
Helen [10]2 years ago
3 0
A.Structure relates to function, is the answer
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The mechanism by which the end product of a metabolic pathway inhibits an earlier step in the pathway is most precisely describe
defon

Answer:

The mecanism is termed as feedback inhibition.

Explanation:

In an enzyme catalyzed sequential reaction the end product of that reaction inhibits the activity of the activity of the enzyme catalyzing the ist step This type of  regulation is called Feed back regulation or feedback inhibition.

               The main function of human body is to maintain the homeostasis of the all the components it contains.When the end product of an ongoing enzyme catalzsed sequential reaction is produced in a high lebel at that time to maintain its own homeostatis that end product inhibits the functioning of the enzyme catalzsing the ist step of that biochemical reaction.

For Example Cytidine tri phosphate inhibits the activity of aspartate transcarbamoylase catalyzing the de novo biosynthesis pathway of pyrimidine metabolism.

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3 years ago
What type of protein penetrates to the interior of the plasma membrane but does not extend all the way through it?
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Integral Hope this helps ;)
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3 years ago
The structure of the cell membrane was discovered in 1895 by _________. Finding a similarity to Olive Oil, he discovers membrane
timofeeve [1]

Answer:

C. Charles Overton , lipids

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3 years ago
Cancer cells are different because they don't enter the G - 0 phase and they are likely to do which of the following Your answer
Allisa [31]

Answer:

c) repeat the cell cycle continuously

Explanation:

Cell division is a normal phenomenon for all cells as this is the way the cell reproduces and gets repaired in living organisms. However, some cells, due to mutation, keeps dividing and proliferating to form tumours. These cells are called CANCER cells. A normal cell undergoes cellular repair at certain checkpoints of the cell cycle. The checkpoints are necessary to determine a faulty cell and stop its division.

However, cancerous cells do not undergo any repair, which is why they do not enter the G0 phase as mentioned in the question. They keep on dividing out of control without death by repeating the cell cycle continuously.

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3 years ago
1. the immune system tries to stop foreign agents by either killing cells directly or by
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1. the immune system tries to stop foreign agents by either killing cells directly or by b)creating an unstable environment 
2. a chronic auto immune disease where the body produces antibodies that stick to the body's own cells causing the body to attack itself is called d) systemic lupus erythematosus 
3. cells that police the body in blood and lymph to kill cancer cells and virus infected body cells are called a) natural killer cells
4. as an infant the ability to produce antibodies is a)limited
6. when abnormal antibodies in the blood start to target tissues with in the body casing paint swelling in joints general fatigue fever chills and headache it is called c) rheumatoid arthritis 
8. the fluid that is forced out of the capillary beds by hydrostatic and osmotic pressure into the tissue space is called C) plasma 
9. any substance capable of exciting the immune system and provoking an immune response is called a) an antigen
10. tonsils are to the throat as b) peyer's patches  are to the intestine 

7 0
3 years ago
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