Cell Structure & Organelles MCQs with Answers

One-liner

During glycolysis, the net production of ATP when one hexose sugar is converted into two pyruvic acid molecules is 8 ATP molecules (4 ATP produced directly minus 2 ATP consumed, plus 6 ATP from 2 NADH via shuttle systems).

One-liner

Catalase is activated at pH 7, which is neutral pH.

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The cells that play a vital role in the differentiation of various body parts are called All of these (stem cells, germ cells, and somatic cells all contribute to differentiation in different contexts).

One-liner

Collagen is a fibrous protein, not a globular protein.

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Chemical compounds that are protein in nature and produced within the cells of living organisms are called Enzymes.

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When the non-protein part is loosely bound to the protein part of an enzyme, it is called a co-enzyme.

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Mitochondria is not a part of the endomembrane system because it is a semi-autonomous organelle with its own DNA and double membrane.

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Enzymes enable the conversion of substrates into products by lowering the activation energy required for the reaction to proceed.

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The type of enzymatic inhibition where enzyme activity is permanently blocked by occupying the active site or destroying the enzyme's global structure is called irreversible inhibition.

One-liner

The x-axis of the graph represents substrate concentration, which shows how increasing substrate levels affect the rate of an enzyme-controlled reaction until saturation is reached.