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Keith_Richards [23]
3 years ago
12

When a community grows back after it has been destroyed by fire or farming?

Biology
1 answer:
VARVARA [1.3K]3 years ago
7 0
Secondary succession 
Hope this helped (:
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A 14-year-old boy has been diagnosed with infectious mononucleosis. Which of the following pathophysiologic phenomenon is most r
Sunny_sXe [5.5K]

Answer:

B) Viruses are killing some of his B cells and becoming incorporated into the genomes of others.

Explanation:

Epstein-Barr virus causes infectious mononucleosis by following mechanism.

1) Epstein-Barr virus attaches to and infects epithelium of the throat where it replicates and causes pharyngitis.

2) Virions enter the lymphoid vessels and are carried to the lymph nodes. Some virions escape the lymphnode trap and are carried to the bloodstream.

3) Virions attach specifically to B lymphocytes and infect them, producing either latent infection or productive infection.

4)The infected B lymphocytes actively replicate and differentiate into cells producing random immunoglobulins.

5)T cells respond to infection and destroy the lymphocytes replicating EBV vitus.

6) Latently infected B lymphocytes become immortal. They are not attacked by T cells.

8 0
3 years ago
What is the main function of a vacuole in a cell
harkovskaia [24]
They can be used to contain cellular waste and to isolate materials that may be harmful to the cell.
8 0
3 years ago
What is the function of RBC
avanturin [10]

Answer:

When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.

The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.

There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.

Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water

7 0
2 years ago
Read 2 more answers
Does the ANIMAL CELL have a CHLOROPLAST?<br> A. Yes<br> B. No
grin007 [14]
The answer is B: no
Hope this helps!
3 0
3 years ago
Some peeled pieces of apple were placed in distilled water and some in very salty water. The cells in the apple pieces will
QveST [7]
I think that they will g<span>ain water in the distilled water and lose water in salty water. I think water will be lost because salt is used as an drying agent, it is why when it snow they will put salt on ice to keep the ice from being slippery because it dries things up. Distill just means to purify something.</span>
7 0
3 years ago
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