Practice Questions

TLS Online TPP Program

#Question id: 795

A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand,

#Unit 1. Molecules and their Interaction Relevant to Biology

the complementary strand has the sequence 5’-(CT)20-3’ and a cruciform structure could form.
the complementary strand has the sequence 5’-(CT)20-3’ and a Z-DNA structure could form.
the complementary strand has the sequence 5’-(TC)20-3’ and an H-DNA structure could form.
the complementary strand has the sequence 5’-(TC)20-3’ and a hairpin structure could form.

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TLS Online TPP Program

#Question id: 10225

#Unit 6. System Physiology – Plant

Air circulation around the leaf removes heat from the leaf surfaces if the temperature of the leaf is higher than that of the air; this phenomenon is called

TLS Online TPP Program

#Question id: 19225

#Unit 12. Applied Biology

Modification of the tissue culture conditions by the inclusion of ________ during transformation of grape, rice, corn, or soybean has been found to increase the transformation frequencies of those plant cells.

TLS Online TPP Program

#Question id: 11892

#General Aptitude

The greatest four-digit number which is exactly divisible by each one of the numbers 12, 18, 21 and 28 is

TLS Online TPP Program

#Question id: 23892

#Unit 13. Methods in Biology

The restriction enzyme BglIl has the recognition sequence (A*GATCT) and cuts between the A and the G as indicated by the asterisk. DNA cut by which of the following restriction enzymes (given with their recognition sequences and cut sites) could be cloned into a plasmid cut with BgIII?