First slide

What is Living

Question

Select correct statement.

Easy

A

Metabolic reactions can be demonstrated outside the body in cell-free systems.
B

Metabolic reactions don’t take place in living systems.
C

Isolated metabolic reactions in vitro are living organisms.
D

Isolated metabolic reactions are not living reactions.

Solution

Metabolic reactions can be demonstrated outside the body in cell-free systems. An isolated metabolic reaction(s) outside the body of an organism, performed in a test tube is neither living nor non-living. Hence, while metabolism is a defining feature of all living organisms without exception, isolated metabolic reactions in vitro are not living things but surely living reactions.

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