Practice Questions

TLS Online TPP Program

#Question id: 124

What is the role of cholesterol in animal cell membranes?

#Section 2: General Biology

Blocks the association of the fatty acyl chains of phospholipids at high temperature.
Aids in the transport of small hydrophobic molecules across the membrane.
Is a receptor site for hormones on the surface of membranes.
Broadens the temperature range of optimum membrane fluidity.

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TLS Online TPP Program

#Question id: 15873

#Section 6: Plant, Animal and Microbial Biotechnology

Which is the most commonly used carbon source, for all cultured plant materials, including even green shoots.

TLS Online TPP Program

#Question id: 15874

#Section 6: Plant, Animal and Microbial Biotechnology

Callus culture show numerical chromosomal changes such as;

TLS Online TPP Program

#Question id: 15875

#Section 6: Plant, Animal and Microbial Biotechnology

Suspension cultures show both numerical and structural chromosomal changes such as;

TLS Online TPP Program

#Question id: 15876

#Section 6: Plant, Animal and Microbial Biotechnology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:

GROWTH REGULATOR(GRs) CONCENTERATION

A) AUXIN i) 0.1-3 mg/L

B) GA3 ii) 0.2 mg/L

C) CYTOKININ iii) 0.1-1 mg/L

TLS Online TPP Program

#Question id: 15877

#Section 6: Plant, Animal and Microbial Biotechnology

Zinc as micronutrient is used in culture media for____

TLS Online TPP Program

#Question id: 15878

#Section 6: Plant, Animal and Microbial Biotechnology

A vitamin which has been found to inhibit callus formation and improve growth and quality of shoots.