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Which of the following plant diseases is/are caused by nematode?
(A) Cereal cyst of barley
(B) Ergot of rye
(C) Wart of potato
(D) Ear-cockle of wheat
1 Answer Which of the following plant natural products is/are cyanogenic glycoside(s)?
(A) Linustatin
(B) Limonene
(C) Luteolin
(D) Linamarin
1 Answer Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?
(A) Shoot apical meristem
(B) Rosette leaf primordium
(C) Procambium
(D) Lateral root primordium
1 Answer The collateral and open type of vascular bundle with endarch xylem strand is usually found in
(A) monocot stem
(B) dicot stem
(C) monocot root
(D) dicot root
1 Answer Which one of the following plant families does apple (Malus domestica) belong to?
(A) Rosaceae
(B) Rutaceae
(C) Rubiaceae
(D) Ranunculaceae
1 Answer A 5250 base-pair long plasmid with 10 negative supercoils would have a linking number of __________, considering 10.5 base pairs per turn for B DNA.
1 Answer In Michaelis-Menten’s equation, if [S]=15Km[S] = 15 K_m, then the ratio v0Vmax\frac{v_0}{V_{max}} is __________.
1 Answer
Factor H, a complement regulatory protein in plasma, binds C3b and
(A) competes with factor B to displace Bb from convertase.
(B) initiates the catabolism of C3b into inactive products.
(C) then binds to C3bBb convertase.
(D) acts as a cofactor for factor I.
1 Answer Which one or more of the following statements correctly describe(s) the changes upon the addition of puromycin during eukaryotic translation?
(A) Puromycin resembles the aminoacyl end of the charged tRNA.
(B) Puromycin occupies the A site of the translating ribosomes.
(C) Puromycin occupies the P site of the translating ribosomes.
(D) Puromycin occupies the E site of the translating ribosomes.
1 Answer Which one or more of the following statements is/are correct in the processing of pre-mRNA in eukaryotes?
(A) 3′ → 5′ exonuclease activity is involved in the conversion of pre-mRNA to mRNA.
(B) 5′-capping and addition of 3′-poly A tail precede splicing.
(C) Splicing of pre-mRNA occurs via transesterification reaction.
(D) Alternative splicing can yield different mRNA products from the same pre-mRNA.
1 Answer
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