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pogonyaev
3 years ago
7

Explain how a mutation in a bacterial cell could help it become resistant to infection by a bacteriophage

Biology
1 answer:
zhenek [66]3 years ago
6 0

Bacteria have different phage resistance mechanisms, such as spontaneous mutations, the CRISPR-Cas system.

Spontaneous mutations are the main mechanisms leading to phage resistance by altering the structure of bacterial wall components that act as phage receptors. These include lipopolysaccharides (LPS), outer membrane proteins, cell wall teichoic acids, capsules, and other bacterial components.

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After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cy
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Answer:

The correct answer is - end of cytokinesis.

Explanation:

Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.  

During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA  

The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.

Thus, the correct answer is - end of cytokinesis.

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