The 5' ends of the mature forms of the prokaryotic mRNAs and tRNAs are
A. A triphosphate group in mRNAs and a monophosphate group in tRNAs
B. Triphosphate groups in both mRNAs and tRNAs
C. Monophosphate groups in both mRNAs and tRNAs
D. A monophosphate group in mRNAs and a triphosphate group in tRNAs
Answer: Option A
RNA is very much susceptible to hydrolysis in alkali because
A. It contains uracil residues in its structure
B. its 2'-OH group participate in intramolecular cleavage of phosphodiester backbone
C. Cleavage occurs in the glycosylic bonds of purine bases
D. Cleavage occurs in the glycosylic bonds of pyrimidine bases
A. Binding of the rho protein upstream of the termination element
B. No protein factors and only RNA secondary structure and run of 'U's
C. Presence of UGA or UAA stop codons
D. Binding of accessory factors at termination signal
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 false but (R) is true
D. (A) is true but (R) is false
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