List of top Life Science Questions on Biochemistry

Match the LIST-I with LIST-II

Match the LIST-I with LIST-II

Coenzyme A serves as a carrier of activated acetyl or acyl group. Key enzymes involving Coenzyme A are:
A. Pyruvate dehydrogese
B. $\alpha$- Ketoglutarate dehydrogese
C. Thiokise
D. Glyceraldehyde 3 phosphate dehydrogese

Which of the following are reducing disaccharides?
A. Galactose
B. Maltose
C. Lactose
D. Trehalose

Select the correct sequence of steps involved in TCA cycle:
A. $\alpha$-Ketoglutarate
B. Succinyl CoA
C. Fumarate
D. Citrate
E. Oxaloacetate

For transport of acyl CoA into mitochondria, select the correct order of steps involved:
A. Acyl- carnitine to acyl CoA
B. Acyl- carnitine transported to mitochondrial matrix
C. Acyl group of acyl CoA transferred to carnitine
D. Carnitine released and return to cytosol

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Electron transport chain (ETC) and ATP synthesizing system are located on the inner mitochondrial membrane.
Reason R: The inner surface of the inner mitochondrial membrane possess phosphorylating subunits.

$\beta$- Oxidation of fatty acids occurs in:

The functiolly active form of Vitamin D is:

Central molecule with maximum variety of metabolic fates is:

The degradation of stored glycogen in liver and muscles is known as:

The process of synthesizing ATP from ADP and Pi coupled with electron transport chain is:

During deturation which bonds in protein structure are NOT broken:

Which of the following amino acids is essential in human diet?

What is the function of Histatin?

Match the following: A. Polymers – DNA, RNA; B. Polymerase – DNA polymerase, RNA polymerase.

Match List I with List II:

List I (Enzyme)	List II (Reaction)
(A) DNase I	(I) Produces single-stranded nicks in DNA
(B) RNase A	(II) Degrades single-stranded RNA
(C) S1 nuclease	(III) Degrades single-stranded DNA
(D) RNase H	(IV) Cleaves the RNA strand of RNA-DNA hybrids

Choose the correct answer from the options given below:

Which of the following are components of lipid rafts in plasma membrane?
(A) Cholesterol
(B) Sphingolipids
(C) Glycolipids
(D) Phospholipids
Choose the correct answer from the options given below:

The complete proteins produced by an organism at any one time is called:

Amino acid that serves as a precursor for formation of the pigment responsible for human skin color is-

Which of the following enzyme is inhibited by citrate in Kreb's cycle?

Match List I with List II:

List I (Vitamin)	List II (Disorder)
(A) Vitamin-A	(I) Night blindness
(B) Vitamin-D	(II) Scurvy
(C) Vitamin-C	(III) Fat-soluble vitamin
(D) Vitamin-K	(IV) Blood clotting

Choose the correct answer from the options given below:

The peptidyl transferase enzyme activity is located in the

Identify the correct sequence of the given intermediates formed during glycolysis:
(A) Fructose 1,6-biphosphate
(B) Fructose 6 phosphate
(C) Lactate
(D) Phosphoenolpyruvate
Choose the correct answer from the options given below:

Match List I with List II:

List I (Enzyme)	List II (Function)
(A) Cytochrome oxidase	(I) Electron transport system
(B) Topoisomerases	(II) Change linking number
(C) Cohesins	(III) DNA Replication
(D) PCNA	(IV) Cell cycle

Choose the correct answer from the options given below: