List of top Biochemistry Questions

Given below are two statements, one is labelled as Assertion A and other is labelled as ReasonR.
Assertion (A): Exotoxins diffuse freely through the bacterial call wall into the medium in which the organisms are growing. 
Reason (R): They are water soluble and can pass into the surrounding medium. 
In the light of the above statements, choose the correct answer from the options given below:

DNA and RNA contain the following two major purine bases:

The electron transport chain is a series of redox reactions that result in ATP synthesis. Which of the following is a cytochrome complex IV inhibitor?

A child presents to you with anemia, thrombocytopenia, and bony pain. On examination, hepatosplenomegaly was noticed. If light microscopy of bone marrow aspirate reveals “crumpled tissue paper” appearance, what is the enzyme defect?

The following is due to the deficiency of?

Which of the following enzyme activities can be estimated in red blood cells to diagnose vitamin B2 deficiency?

DNA packing is done by which of the following?

A single mutation in a nucleotide base pair resulting in a termination codon is known as ________?

Which of the following helps in the transport of fatty acids across the inner mitochondrial membrane?

A patient from a Mediterranean country visits Africa, where he develops malaria. He is treated with primaquine and later develops hemolytic anemia. Deficiency of an enzyme involved in which of the following pathways could be the cause?

Which one of the following is NOT a phospholipid?

Given below are two statements
Statement I: Sequencing of DNA is much easier than RNA sequencing due to greater stability 
Statement II: The chemical method of DNA sequencing (Maxam & Gilbert) works for only single stranded DNA 
In light of the above statements, choose the correct answer from the options given below

How many molecules of acyl-CoA are produced in beta-oxidation of palmitic acid

p-gp (p-glycoprotein) is highly expressed on the

Which of the following is false about HMP shunt?

Riboflavin, chemically is:

In Direct, Contact or Jet condensers, barometric leg serves one of the following functions:

In case of suppositories base, SFI stands for :

Microcrystalline cellulose is also called as :

The phase contrast microscopy is valuable in studying living cells which are :

Blockade in ẞ-oxidation results in :

For protein detection most commonly used probe is:

ELISA is based upon

One of the following is a most commonly used protecting group for amines :