Enzyme Activity | MCQs

Explanation

Optimum Temperature is the specific temperature at which an enzyme exhibits peak catalytic activity.

Deviations (higher/lower) reduce efficiency, as enzymes are temperature-sensitive proteins.

Explanation

Amylase is the enzyme that breaks down starches into sugars, and it is secreted by the salivary glands during the process of digestion.

Explanation

Explanation

An enzyme without its cofactor is called an apoenzyme.

Apoenzymes are the inactive protein component of an enzyme, requiring a cofactor to become catalytically active and form a holoenzyme. 

Explanation

• Inhibitors are molecules that bind to enzymes and decrease their activity, thereby slowing down or preventing the biochemical reaction.
• Enzyme activity is not enhanced by inhibitors, but rather inhibited.

Explanation

The optimal pH for most arginases is in the alkaline range, with values typically between 9.0 and 10.0, though variations exist depending on the source and specific arginase isoform.

Arginase is an enzyme with an optimal pH around 9.7, where it functions best to convert arginine into urea and ornithine in the urea cycle.

Explanation

The tertiary structure of a protein refers to its complex, folded shape in 3D space, which is crucial for enzyme function.

This structure is formed by interactions between the amino acid side chains within the polypeptide chain,

Including hydrophobic interactions, ionic bonds, hydrogen bonds, and disulfide bridges

Explanation

Water acts as a universal solvent in cells where most biochemical reactions take place.

It facilitates transport, reactions, and temperature regulation in living organisms.

Explanation

 Enzymatic activity can be inhibited by heavy metal ions, which can disrupt the enzyme's structure and function.

Explanation

The optimum pH for pancreatic lipase is around 8.

Pancreatic lipase works best in slightly alkaline conditions, which is the environment of the small intestine where it aids in the digestion of fats