MCQ Bank
The process in which the enolate of an aldehyde or a ketone reacts at the a-carbon with the carbonyl of another molecule to obtain B-hydroxy aldehyde or B-hydroxyl ketone is called as --------
- A) Hydrolysis
- B) Aldol condensation
- C) Decarboxylation
- D) Claisen condensation
Which one of the following is derived by the reaction between a carboxylic acid and an alcohol?
- A) Aldol
- B) Phenol
- C) Ester
- D) Enol
The enzyme --------catalyzes a reversible shift of the phosphoryl group between C-2 and C-3 of glycerate.
- A) Phosphofructokinase-1
- B) Phosphoglycerate mutase
- C) Aldolase
- D) Triose phosphate isomerase
Which one of the following is true regarding elimination reaction?
- A) Causes oxidation-reduction reaction
- B) Causes reduction
- C) Causes no change in oxidation state
- D) Causes oxidation
Dietary deficiency of Niacin the vitamin form of NAD and NADP causes---------
- A) Pellagra
- B) Diabetes
- C) None of given
- D) Alzheimer's disease
The stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as --------bonding.
- A) Peptide
- B) Ionic
- C) Hydrogen
- D) Covalent
Study of energy relationships and energy conversions in biological systems is termed as ,--------
- A) Biophysics
- B) Bioenergetics
- C) Microbiology
- D) Biotechnology
Nucleophiles are capable of
- A) Donating electrons
- B) Donating both electrons and protons
- C) Donating protons
- D) Accepting electrons
The energy gain takes place in the --------phase of glycolysis.
- A) Final
- B) Intermediate
- C) Payoff
- D) None of given
Dihyd phosphate is only converted to glyceraldehyde 3-phosphate by ------ enzyme.
- A) Triose phosphate isomerase
- B) Pyruvate kinase
- C) Phosphofructokinase-1
- D) Aldolase
If AG is negative
- A) Reaction will not occur
- B) Reaction will stop
- C) Reaction will be spontaneous
- D) No product will be formed
Which one of the following enzymes catalyze the addition of CO2 to double bonds?
- A) Peptidase
- B) Lyase
- C) Phospholipase
- D) Hydrolase
A process that generates a product by the mass culture of microorganism is called
- A) Hydration
- B) Alloy formation
- C) Fermentation
- D) Radiation process
Name the enzyme secreted by pancreas?
- A) Pepsin
- B) Chymotrypsin
- C) Alcohol dehydrogenase
- D) Trypsin
Which of the following enzymes catalyze the transfer of electrons from one substrate to another?
- A) Oxidoreductases
- B) Hydrolases
- C) Lyases
- D) Transferases
Most biochemical reactions occur near pH
- A) 14
- B) 10
- C) 7
- D) 0
RNAs make up of the total RNA in the cell.
- A) 5%
- B) 20%
- C) 80%
- D) 50%
Enzyme is the liver variant of hexokinase.
- A) Phosphofructokinase
- B) Fructose-2,6-bisphosphate
- C) Fructose-1,6-bisphosphatase
- D) Glucokinase
Which of the following enzymes catalyze the hydrolysis of substrate?
- A) Oxidoreductases
- B) Hydrolases
- C) Transferases
- D) Lyases
Which one of the following enzymes catalyze the removal of H2O from 2-Phosphoglycerate?
- A) Hydrolase
- B) Lyase
- C) Phospholipase
- D) Enolase