List of top Biochemistry Questions

Recent studies using GFP fusion proteins have allowed study of protein dynamics in living cells. Initially, GFP was derived and cloned from:

The complement system helps the body immunity in following 4 ways. Its correct sequences is: A. Inflammatory reaction, B. Opsonization, C. Complement fixation, D. Clearance of antigen-antibody complexes Choose the correct answer from the options given below:

Enzymes are classified on the basis of reaction they catalyze. Which of the following are correct combinations? A. Oxidoreductase: Oxidation-reduction reaction B. Transferases: Transfer of group C. Hydrolases: Catalyze hydrolysis D. Lyases: Addition of group E. Ligases: Catalyze inter-conversion of group Choose the correct answer from the options given below:

Which immune system fails to discriminate between self and non-self? A. Insulin-dependent diabetes ($\beta$-cell antibodies) B. Asthma (antibodies against lung cells) C. Myasthenia gravis (acetylcholine receptor autoantibodies) D. Hepatitis (antibody against hepatic cells) E. Rheumatoid arthritis (antibodies against joint protein) Choose the correct answer from the options given below:

Enzymes used in recombinant research are: A. Terminal Transferases B. Pyruvate kinase C. Reverse Transcriptase D. Hexokinase Choose the correct answer from the options given below:

Match List - I with List - II.

List - I	List - II
A. 6-mercaptopurine	I. Monoclonal antibody
B. Mitomycin	II. Platinum compound
C. Cisplatin	III. Antibiotic
D. Imatinib	IV. Purine analogue

Choose the correct answer from the options given below:

Identify the proteins with correct function:

A. Cytochrome C - Electron Transport chain

B. Hemoglobin - Storage of \(\text{O}_{2}\) in muscle

C. Catalase - Degradation of hydrogen peroxides

D. Myoglobin - Transport of \(\text{O}_{2}\) in blood

Choose the correct answer from the options given below:

Genetic Disorders in human is/are: A. Down's syndrome - Trisomy at chromosome 21 B. Parkinson's disease - Tyrosine hydroxylase C. Diabetes mellitus D. Phenylketonuria - Phenylalanine hydroxylase Choose the correct answer from the options given below:

Match List - I with List - II.

List - I	List - II
A. Biuret reactions	I. \(\alpha\)-Amino acid
B. Ninhydrin test	II. Two peptide linkage
C. Millon's reaction	III. Guanidino group
D. Sakaguchi reaction	IV. Phenolic group (Tyr)

Choose the correct answer from the options given below:

Match List I with List - II.

List - I	List - II
A. Albumin	I. Damage to kidneys or urinary tract
B. Hemoglobin	II. Kidney damage
C. Glucose	III. Diabetes mellitus
D. Bile pigments	IV. Obstructive jaundice

Choose the correct answer from the options given below:

Blood glucose/glycation value of a non-diabetic person:

A. 140-199 mg/dL

B. \(5.5\ \text{HbA}_{1\text{c}}\)

C. 75-100 mg/dL

D. \(7.0\ \text{HbA}_{1\text{c}}\)

Choose the correct answer from the options given below:

Some of the Bile acids are: A. Deoxycholic acid, B. Oxalic acid, C. Taurocholic acid, D. Acetoacetic acid Choose the correct answer from the options given below:

Identify the steps in the formation of vitamin \(\text{D}_{3}\):

A. Vitamin \(\text{D}_{4}\) \(\rightarrow\) 25-Hydroxycholecalciferol

B. Provitamin \(\text{D}_{3}\) \(\xrightarrow{\text{Sunlight}}\) Vitamin \(\text{D}_{3}\)

C. 7-Dehydrocholesterol \(\xrightarrow{\text{Sunlight}}\) Provitamin D

D. 25-Hydroxycholecalciferol \(\rightarrow\) Vitamin \(\text{D}_{3}\)

Choose the correct answer from the options given below:

Correct sequence of electron transport chain reactions is:

A. Substrate \(\rightarrow\) \(\text{NAD}^{+}\)

B. \(\text{NAD}^{+}\) \(\rightarrow\) FMN

C. \(\text{CoQ}\) \(\rightarrow\) \(\text{Cyt b}\)

D. \(\text{FMN}\) \(\rightarrow\) \(\text{CoQ}\)

E. \(\text{Cyt a}\) \(\rightarrow\) \(\text{Cyt a}_{3}\)

Choose the correct answer from the options given below:

An axonal process 2 meter long is originating in spinal cord and terminating in the muscles of toes. If the average velocity of a vesicle is \(1\ \mu\text{m/s}\) how long does it take a vesicle to move from a cell body in the spinal cord to the axonal tip in the toes?

Match List - I with List - II.

List - I	List - II
A. Epidermal growth factor (EGF)	I. Monocyte
B. Platelet derived growth factor (PDGF)	II. Salivary gland, fibroblast
C. Transforming growth factor (TGF-\(\alpha\))	III. Platelet
D. Tumor necrosis factor (TNF-\(\alpha\))	IV. Epithelial cells

Choose the correct answer from the options given below:

Steps in the metabolism of Tyrosine.

A. Phenylalanine \(\xrightarrow{\text{Phenylalanine hydroxylase}}\) Tyrosine

B. Homogentisate \(\rightarrow\) Fumarate

C. Tyrosine \(\xrightarrow{\text{Tyrosine Transaminase}}\) hydroxyphenyl pyruvate

D. Phenylalanine \(\xrightarrow{\text{Phenylalanine dehydrogenase}}\) Homogentisate

Choose the correct answer from the options given below:

Inherited disorders of purine metabolism is/are: A. Lesch-Nyhan syndrome due to Adenosine deaminase B. Xanthinuria due to xanthine oxidase C. Renal lithiasis due to adenosine deaminase D. Gout due to PRPP synthetase Choose the correct answer from the options given below:

Match List I with List - II.

List - I	List - II
A. Hyperammonemia type I	I. Arginase
B. Hyperammonemia type II	II. Arginosuccinate synthase
C. Citrullinemia	III. Ornithine transcarbamoylase
D. Hyperargininemia	IV. Carbamoyl phosphate synthase

Choose the correct answer from the options given below:

Unique features of metabolism of principal organs is/are:

A. Heart: Transport of \(\text{O}_{2}\)

B. Adipose tissue: Rapid movement

C. Kidney: Excretion and gluconeogenesis

D. Brain: Coordination of nervous system

Choose the correct answer from the options given below:

Correct sequence of steps of citric Acid Cycle: A. Succinyl CoA, B. Acetyl CoA, C. Citrate, D. $\alpha$-ketoglutarate, E. Malate Choose the correct answer from the options given below:

The DNA-binding domain of steroid receptors is located:

Match List - I with List - II.

List - I	List - II
A. Citric Acid Cycle	I. Phosphofructokinase
B. Glycolysis	II. Citrate synthase
C. Pyruvate Oxidation	III. Glycogen synthase
D. Glycogenolysis	IV. Pyruvate dehydrogenase

Choose the correct answer from the options given below:

Different forms of Vitamin A are: A. Retinal (Vitamin A aldehyde) B. Retinyl Palmitate (Vitamin A acid) C. Retinol (Vitamin A alcohol) D. Retinyl ester (Vitamin A ester) E. $\beta$-carotene (provitamin A) Choose the correct answer from the options given below:

A person is eating polished rice throughout his life, deficiency of which vitamins he/she is likely to have?

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