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zhenek [66]
2 years ago
7

The lock-and-key mechanism refers to

Biology
1 answer:
dolphi86 [110]2 years ago
6 0

Answer:

I think the answer is A.  the complementary shapes of an enzyme and a substrate.

Explanation:

I hope this helps! Correct me if I am wrong.

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Cell culture needs control environment for the production of cells in order to avoid contamination from other microbes. For this reason, liquid nitrogen storage incubator is used which decreases the temperature in order to slow down the process of cell division and other cellular processes and also provide safety from contamination. Cell counter inverted microscope is used to see the growth of the cells at the bottom of storage tank.

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