Practice Questions

TLS Online TPP Program

#Question id: 7310

Which statement best describes the mechanism for circadian rhythm?

#Unit 5. Developmental Biology

There is an alternation between enhanced and inhibited expression of clock genes.
Clock genes inhibit gene expression of positive elements.
Clock genes inhibit expression of negative elements.
The time-keeping mechanism depends only on the breakdown of negative elements.

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TLS Online TPP Program

#Question id: 23627

#Unit 13. Methods in Biology

The human genome contains about ________ bp of DNA.

TLS Online TPP Program

#Question id: 7463

#General Aptitude

The time between 7 and 8 o’ clock , correct to the nearest minute, when the hands of a clock will from an angle of 84° are :

TLS Online TPP Program

#Question id: 18718

#Unit 13. Methods in Biology

What does an E.Coli genomic library contain?

TLS Online TPP Program

#Question id: 15252

#Unit 2. Cellular Organization

A process in which a suspension of microbes is quickly frozen at temperatures ranging from - 54°C to -72°C, and the water is removed by a high vacuum (sublimation)

TLS Online TPP Program

#Question id: 5058

#Unit 5. Developmental Biology

In the formation of vertebrate eye, optic vesicle and head ectoderm are-