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Biomolecules

Multiple Choice Questions

261.

Which element is cause of itai 1/N desh itai disease

Short Answer Type

262.

What is pro-enzyme?

263.

Name two sulphur containing and two basic amino acids.

Multiple Choice Questions

264.

Feedback inhibition of enzymes is affected by which ofthe following

Enzyme
Substrate
End products
Intermediate end products

265.

Pellagra is caused due to deficiency of the vitamin

thiamine
niacinn
pyridoxin
biotin

266.

Which one is diaminodicarboxylic amino acid?

Cystine
Lysine
Cysteine
Aspartic acid

267.
Which one is the cofactor of carbonic anhydrase?

Iron (Fe)

Zinc (Zn)

Copper (Cu)

Magnesium (Mg)

Zinc (Zn)

Many enzymes require the presence of an additional, nonprotein, cofactor. Some of these are metal ions such as Zn²⁺ (the cofactor for carbonic anhydrase), Cu²⁺, Mn²⁺, K⁺ and Na⁺. Some cofactors are small organic molecules called coenzymes. The vitamin-B are the precursors of coenzyme.