Cell Structure and Function MCQ Quiz: GKFix - Bridge of Knowledge - Page 39

Question 191

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What is the role of coenzymes in enzyme action?

Provide structural stability
Store energy
Assist in catalytic activity
Regulate gene expression

Question 192

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What is the function of enzymes?

Structural support
Energy storage
Immune defense
Biological catalysts

Question 193

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What is the isoelectric point of an amino acid?

pH at which it becomes acidic
pH at which it becomes basic
pH at which it has no net charge
pH at which it loses its amino group

Question 194

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What is denaturation of a protein?

Synthesis of new proteins
Increase in solubility
Loss of biological activity due to structural disruption
Formation of new peptide bonds

Question 195

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What is the quaternary structure of a protein?

Sequence of amino acids
Three-dimensional folding
Arrangement of multiple subunits
Secondary helix formation