Practice Questions

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#Question id: 3915

Which of the following is true for the unwinding of the DNA helix and the synthesis of a short stretch of RNA?

#Unit 3. Fundamental Processes

The process requires a helicase and a primase as in DNA replication.
In transcription, these steps proceed via an RNA polymerase holoenzyme.
The unwinding and subsequent synthesis above serve as a primer for chain elongation.
All of the above

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#Question id: 3582

#Unit 8. Inheritance Biology

Different genetic cross regarding two independently assorting non allelic gene with complete dominance and their phenotypic ratio showed in a following is correc

	Genetic cross		Phenotype ratio
I	AABb X AaBb	A	1:1
II	AaBb X aaBB	B	3:3:1:1
III	Aabb X aaBb	C	6:2
IV	AaBb X Aabb	D	1:1:1:1

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#Question id: 8957

#Unit 9. Diversity of Life Forms

A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in the grooves between larger, underlying cells (spiral cleavage). This embryo may potentially develop into a(n)

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#Question id: 3725

#Unit 3. Fundamental Processes

What is the function of the primosome?

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#Question id: 16124

#Unit 7. System Physiology – Animal

Thermoreceptors are:

a) activated only by severe cold or severe hot

b) located on the superficial layers of the skin

c) a subtype of nociceptors

d) on dendritic endings of A delta fibres and C fibres

which of following combination is correct?

TLS Online TPP Program

#Question id: 11147

#Unit 7. System Physiology – Animal

The concentrations of ions are very different inside and outside a nerve cell due to ________.