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Mars2501 [29]
4 years ago
10

A _______________________ recognizes and destroys cells infected by a virus.

Biology
2 answers:
balu736 [363]4 years ago
8 0
A cytotoxic T cell recognizes and destroys cells infected by a virus. They are also responsible for killing cancer cells too.
galina1969 [7]4 years ago
6 0

Answer:

c)cytotoxic T cell is the correct answer.

Explanation:

On the surface of the Cytotoxic T cell, TCR's receptors and a cluster of differentiation (CD8) receptors are present.

The cells infected by a virus produce viral proteins and these viral protein are present on their membrane

Cytotoxic T cells kill the virus-infected cell when their receptors TCR's match with the viral antigen and as they recognize the cell infected with the virus they produce cytokines that eliminate the infection.

Thus cytotoxic T cell recognizes and destroys cells infected by a virus.

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Some herbicides prevent sucrose uptake by plant cells. Upon applying the herbicide to an isolated plant cell, it was detected th
never [62]

Answer:

Herbicide essentially replaces sugar with itself during uptake by plants.

Explanation:

Noting that the pH is decreased around the plant cells indicate that there is an acidic environment that exists, It also indicates that the cell wall  had been perforated and the contents are being expelled or at the very least leaking.

The ability for the plant to break down and use sugar is vital for its survival. Most herbicides are in the form of glycophosphates and it moves along with the sugar in the plant that have been treated with herbicides through the transport vesicles, the xylem and phloem.

This causes an imbalance in the available sugars that are able to be taken up by the plant since much of it is replaced by the herbicide.

6 0
3 years ago
The fusion of a sperm and egg to form a ________________________
Burka [1]

Answer:

zygote

Explanation:

gamates fuse and create zygotes

6 0
3 years ago
Read 2 more answers
If the T m for a particular amino acid is 120 mg/100 ml and the concentration of that amino acid in the blood is 230 mg/100 ml,
IrinaK [193]

Answer:

Option D, appear in the urine

Explanation:

It is mentioned in the question that Tm for a particular amino acid is 120 mg/100 ml , but the concentration of amino acid in blood is 230 mg/100 ml. Thus, there is an excess of amino acid in blood. The excess amino acid is drained into kidney during blood purification which ultimately appear in the urine.

Thus, option D is correct

3 0
3 years ago
Original DNA coding strand: TAC CCG ACG GGC GAT AGT TTC
marishachu [46]
A) DNA 1 by chromosomal mutation
DNA 2 by genetic mutation



Hope it’s usefullll
8 0
3 years ago
What are two characteristics that all bacteria share?
dlinn [17]

They live every where

They can effect you and other organisms

They are microscopic
7 0
3 years ago
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