Match the chemicals in Group I with the possible type/class in Group II
Group I:
P. Picloram
Q. Zeatin
R. Thiamine
S. Glutamine
Group II:
1. Vitamin
2. Auxin
3. Amino Acid
4. Cytokinin
(A) P-2, Q-4, R-1, S-3
(B) P-4, Q-1, R-2, S-3
(C) P-3, Q-1, R-2, S-4
(D) P-4, Q-2, R-1, S-3

Match the following antibiotics in Group I with their mode of action in Group II
Group I:
P. Chloramphenicol
Q. Norfloxacin
R. Puromycin
S. Rifampicin
Group II:
1. Binds to DNA gyrase
2. Binds to RNA Polymerase
3. Inhibits peptidyl transferase
4. Mimics aminoacyl-(tRNA**
(A) P-1, Q-3, R-2, S-4
(B) P-3, Q-1, R-2, S-4
(C) P-3, Q-1, R-4, S-2
(D) P-4, Q-2, R-3, S-1

Determine the correctness or otherwise of the following Assertion (a) and the Reason (r)
Assertion: MTT assay is used to determine cell viability based on the principle of colour formation by DNA fragmentation.
Reason: MTT assay is used to determine cell viability based on the colour development by converting tetrazolium soluble salt to insoluble salt.
(A) both (a) and (r) are true and (r) is the correct reason for (a)
(B) both (a) and (r) are true and (r) is not the correct reason for (a)
(C) (a) is true but (r) is false
(D) (a) is false but (r) is true

A roller bottle culture vessel perfectly cylindrical in shape having inner radius (r) = 10 cm and length (l) = 20 cm was fitted with a spiral film of length (L) = 30 cm and width (W) = 20 cm. If the film can support 10^5 anchorage dependent cells per cm^2, the increase in the surface area after fitting the spiral film and the additional number of cells that can be grown respectively are
(A) 1200 cm^2 and 12 x 10^7 cells
(B) 600 cm^2 and 6 x 10^7 cells
(C) 600 cm^2 and 8300 cells
(D) 1200 cm^2 and 8300 cells

An immobilized enzyme being used in a continuous plug flow reactor exhibits an effectiveness factor (η) of 1.2. The value of η being greater than 1 could be apparently due to
(A) substrate inhibited kinetics with external pore diffusion limitation
(B) internal pore diffusion limitation
(C) sigmoidal kinetics
(D) unstability of the enzyme

Determine the correctness or otherwise of the following Assertion (a) and the Reason (r):
Assertion: Somatic embryogenesis in plants is a two-step process comprising of embryo initiation followed by embryo production.
Reason: Embryo initiation is independent of the presence of 2,4-dichlorophenoxyacetic acid whereas embryo production requires a high concentration of 2,4-dichlorophenoxyacetic acid.
(A) both (a) and (r) are true and (r) is the correct reason for (a)
(B) both (a) and (r) are true and (r) is not the correct reason for (a)
(C) (a) is true but (r) is false
(D) (a) is false but (r) is true

The formation of peptide cross-links between adjacent glycan chains in cell wall synthesis is called
(A) Transglycosylation
(B) Autoglycosylation
(C) Autopeptidation
(D) Transpeptidation

Nuclease-hypersensitive sites in the chromosomes are sites that appear to be
(A) H2 and H4 histone free
(B) H1 and H2 histone free
(C) H3 and H4 histone free
(D) Nucleosome free

Oxidation-reduction reactions with positive standard redox potential (E⁰’) have
(A) positive ΔG⁰
(B) negative ΔG⁰
(C) positive ΔE⁰’
(D) negative ΔE⁰’

The degree of inhibition for an enzyme-catalyzed reaction at a particular inhibitor concentration is independent of the initial substrate concentration. The inhibition follows
(A) competitive inhibition
(B) mixed inhibition
(C) un-competitive inhibition
(D) non-competitive inhibition