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NEET Biology Solved Question Paper 2010

Multiple Choice Questions

51.

Radula is found in

Pila sp.
Chiton sp.
Lamellidens sp.
Pinctada sp.

52.

Which phase comes in between the G₁ and G₂ phases of cell cycle?

M - phase
G₀- phase
S - phase
Interphase

53.

How many effective codons are there for the synthesis of twenty amino acids?

54.

Chromosome is made up of

DNA and pectin
RNA and DNA
DNA and histone
only histone

55.

Cell division cannot be stopped in which phase of the cell cycle?

G₁- phase
G₂- phase
S- phase
Prophase

56.

Cell theory is not applicable for

bacteria
fungus
algae
virus

57.

The difference between systolic and diastolic pressure in human is

120 mm Hg
80 mm Hg
40 mm Hg
200 mm Hg

58.
Which one of the following viruses contains is a DNA and RNA?

Cyanophage

Herpes virus

Leuko virus

Polio virus

Leuko virus

We all know that all cells have double-stranded DNA as their genetic material. But, in contrast, all viruses possess either DNA or RNA as their genetic material, and it can be either single-stranded or double-stranded. However, there is a third group of viruses that use both DNA and RNA as their genetic material but at different stages of their reproductive cycle. This third group is examplified by retroviruses which contain RNA as genetic material but replicate through a DNA intermediate, and hepadnaviruses (human hepatitis-B virus) which contains DNA as in replication genetic material but has an RNA intermediate.