Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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11.

Which of the following cartoon characters does not share its name with that of a gene

  • Tintin

  • Popeye

  • Asterix

  • Obelix


A.

Tintin

Titin, also known as connectin, is a protein that, in humans, is encoded by the TTN gene.


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12.

Apiculture is associated with which of the following groups of plants

  • Grapes, maize, potato

  • Sugarcane, paddy, banana

  • Guava, sunflower, strawberry

  • Pineapple, sugarcane, strawberry


13.

Which of the following is correctly labelled for the given figure

  • A: PS II; B : PS I; C :e- acceptor, D: LHC

  • A: LHC; B:e- acceptor; C: PS I; D: PS II

  • A: PS I; B:PS II; C:e- acceptor; D: LHC

  • A: e- acceptor; B : LHC; C: PS Il; D: PS I


14.

During muscular contraction, which of the following events occur

(i) H-zone disappears
(ii) A band widens
(iii) I band reduces in width
(iv) Width of A band is unaffected
(v) M line and Z line come closer

  • (i), (iii), (iv) and (v)

  • (i), (i) and (v)

  • (ii), (iv) and (v)

  • (i), (ii) and (iii)


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15.

The release of chemical messenger from synaptic vesicles is under the influence of these ion(s).

  • Cl- 

  • Fe and S2+

  • Ca2+

  • Mg2+ and Sr2+


16.

Kranz anatomy is usually associated with

  • C3 plants

  • C4 plants

  • CAM plants

  • C3-C4intermediate plants.


17.

Microtubule depolymerizing drug such as colchicine is expected to

  • inhibit spindle formation during mitosis

  • inhibit cytokinesis

  • allow mitosis beyond metaphase

  • induce formation of multiple contractile rings


18.

Catecholamine in a normal person induces

  • intense salivation

  • alertness

  • decrease in heart beat

  • excessive urination.


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19.

Oxygen binding to haemoglobin in blood is

  • directly proportional to the concentration of CO2 in the medium

  • inversely proportional to the concentration of CO2 in the medium

  • directly proportional to the concentration of CO in the medium

  • independent of the concentration of CO in the medium


20.

Leghaemoglobin is produced in response to

  • respiration

  • photosynthesis

  • fatty acid synthesis

  • N2 fixation


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