Practice Questions

TLS Online TPP Program

#Question id: 5807

Which of the following would be an example of a germline mutation?

#Unit 8. Inheritance Biology

Exposure to excessive UV radiation causes changes in the DNA of a skin cell, leading to basal cell carcinoma (skin cancer).
In a very early human embryo, a mistake in mitosis causes loss of a Y chromosome in one daughter cell. The resulting child is a fertile male who is chromosomally partially male (XY) and partially female with Turner's syndrome (XO).
A man with normal chromosomes has a hip X-ray without a protective shield. Ten months later, his wife gives birth to a child with a chromosomal deletion.
An embryo missing one copy of the third chromosome is miscarried very early in pregnancy.

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TLS Online TPP Program

#Question id: 27479

#Unit 1. Molecules and their Interaction Relevant to Biology

For monosaccharides having two or more asymmetric carbons, their L or D con configuration can be decided by using

TLS Online TPP Program

#Question id: 27478

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following are the minimum essential criteria for the chirality of Aldoses and ketoses

TLS Online TPP Program

#Question id: 27424

#Unit 1. Molecules and their Interaction Relevant to Biology

Conversion of antigen are possible with the help of enzyme then O

B antigen these conversion are catalysed by enzyme a and b which are

TLS Online TPP Program

#Question id: 27423

#Unit 1. Molecules and their Interaction Relevant to Biology

Cholesterol Poor region are maintained in the

TLS Online TPP Program

#Question id: 27422

#Unit 1. Molecules and their Interaction Relevant to Biology

There are two extreme states of bilayer lipids choose which of the following is correct

1.In the liquid- ordered (Lo) state, polar head groups are non uniformly arrayed at the surface, and the acyl chains are nearly motionless and packed with irregular

2.in the liquid- ordered (Lo) state, polar head groups are uniformly arrayed at the surface, and the acyl chains are nearly motionless and packed with regular

3.In the liquid-disordered (Ld) state acyl chains undergo much thermal motion and have regular organization.

4.In the liquid-disordered (Ld) state, acyl chains undergo much thermal motion and have no regular organization.

TLS Online TPP Program

#Question id: 27421

#Unit 1. Molecules and their Interaction Relevant to Biology

Highest concentration of cholesterol are found in