Practice Questions

TLS Online TPP Program

#Question id: 11003

Which of the following statements about cardiac muscle is most accurate?

#XL - T Zoology

The T-tubules of cardiac muscle can store much less calcium than T-tubules in skeletal muscle
The strength and contraction of cardiac muscle depends on the amount of calcium surrounding cardiac myocytes
In cardiac muscle the initiation of the action potential causes an immediate opening of slow calcium channels
Cardiac muscle repolarization is caused by opening of sodium channels

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TLS Online TPP Program

#Question id: 5756

#XL - S Microbiology

Type of mutation caused by an addition or deletion of a base in a polypeptide-encoding part of a gene

TLS Online TPP Program

#Question id: 15711

#XL - S Microbiology

For the regeneration of a whole plant from a cell or callus tissue, there should be differentiation leading to shoot bud or embryo formation. This may occur through

TLS Online TPP Program

#Question id: 16493

#XL - T Zoology

35S promoter sequences derived from cauliflower mosaic virus shows which type of expression.

TLS Online TPP Program

#Question id: 19850

#XL - P Chemistry

Out of boiling point (I), entropy (II), pH (III) and e.m.f. of a cell (IV), intensive properties are –

TLS Online TPP Program

#Question id: 685

#XL - Q Biochemistry

A protein has a molecular weight of 5600 daltons; its subunits are about 1960 daltons. There are ________ protein chains per oligomer.