#Question id: 2737
#SCPH05 I Biotechnology
The linking number (Lk) of a closed-circular, double-stranded DNA molecule is changed by:
#Question id: 5048
#SCPH01 Biochemistry
when a cell or tissue is capable of differentiating autonomously even when placed into another region of the embryo or a cluster of differently specified cells in a petri dish. This cell or tissue said to be-
#Question id: 4163
#SCPH05 I Biotechnology
The net effect of all amino acid tRNA synthetases binding to a tRNA is to position the __ of tRNA in the active site.
#Question id: 545
#SCPH01 Biochemistry
Which one of the following is not among the six internationally accepted classes of enzymes?
#Question id: 935
#SCPH01 Biochemistry
Microorganisms capable of fixing nitrogen into a form usable by animals obtain the energy for this process from ________.