Ask Doubt
Which one of the following represents the abundance of the organisms found in soil?
(A) Fungi > Aerobic bacteria > Anaerobic bacteria
(B) Aerobic bacteria > Fungi > Anaerobic bacteria
(C) Aerobic bacteria > Anaerobic bacteria > Fungi
(D) Anaerobic bacteria > Aerobic bacteria > Fungi
Which one of the following uses inorganic compounds as an energy source?
(A) Heterotrophs
(B) Chemolithotrophs
(C) Chemoorganotrophs
(D) Photoheterotrophs
Which one of the following double-stranded sequences will NOT be recognized by a Type IIP restriction endonuclease?
(A) 5′–GGTACC–3′
3′–CCTAGG–5′
(B) 5′–GGATCC–3′
3′–CCTAGG–5′
(C) 5′–CATATG–3′
3′–GTATAC–5′
(D) 5′–GATTTC–3′
3′–CTAAAG–5′
The most abundant class of immunoglobulins in serum is __________.
(A) IgM
(B) IgA
(C) IgD
(D) IgG
In which of the following processes is glutaraldehyde used as a sterilizing agent?
(A) Pasteurization
(B) Incineration
(C) Cold sterilization
(D) Autoclaving
Who among the following scientists was the pioneer in the development of chemotherapy?
(A) Elie Metchnikoff
(B) Robert Koch
(C) Paul Ehrlich
(D) Ronald Ross
Which one of the following organisms has axial filaments?
(A) Mycobacterium tuberculosis
(B) Pasteurella multocida
(C) Treponema pallidum
(D) Shigella dysenteriae
Which one of the following bacterial species can cause atypical pneumonia?
(A) Chlamydia pneumoniae
(B) Streptococcus pneumoniae
(C) Klebsiella pneumoniae
(D) Haemophilus influenzae
Which of the following combinations of plant secondary metabolites and their functions is/are CORRECT?
(A) Anthocyanin − Herbivore deterrence
(B) Pyrethrin − Insecticidal activity
(C) Phytoalexins − Antifungal activity
(D) Tannins − Pollinator attraction
Identify the CORRECT combination(s) between the enzymes in Group 1 and the reactions in Group 2 they catalyze.
| Group 1 | Group 2 |
|---|---|
| (P) Superoxide dismutase | (i) Formation of hydrogen peroxide |
| (Q) Phosphoenolpyruvate carboxylase | (ii) Formation of oxaloacetate |
| (R) Ribulose 1,5-bisphosphate carboxylase/oxygenase | (iii) Formation of 3-phosphoglycerate |
| (S) Hexokinase | (iv) Formation of glucose-6-phosphate |
(A) P−iii, Q−ii, R−iv, S−i
(B) P−i, Q−ii, R−iii, S−iv
(C) P−ii, Q−iv, R−i, S−iii
(D) P−i, Q−iii, R−ii, S−iv
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