Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Genes for maternal inheritance are located in

  • Golgi bodies

  • mitochondria

  • lysosome

  • nucleolus


52.

Match the following column I with column II

Column I Column II
A. Vitamin- B1 1. Accumulation of fat
B. Gastric juice 2. Loss of fat
C. Starvation 3. Pepsin
D. Obesity 4. Beri- beri

  • A- 3; B- 4; C- 2; D- 1

  • A- 3; B- 4; C- 1; D- 2

  • A- 4; B- 3; C- 1; D- 2

  • A- 4; B- 2; C- 1; D- 3


53.

Each 100 mL of human arterial blood carries 'P' mL of O2 and 'Q' mL of CO2, whereas each 100 mL of venous blood carries 'R' mL of O2 and 'S' mL of CO2. Choose the correct values of P, Q, R and S.

  • P =48 mL; Q=19 - 20 mL; R=52 mL; S = 14 - 15 ml

  • P= 19 - 20mL; Q= 48 mL; R= 14 - 15mL; S =52 mL

  • P = 14 - 15mL; Q = 52mL; R = 19 - 20 mL; S = 48mL

  • P = 52 mL; Q =14 - 15mL; R = 48 mL; S = 19 - 20 mL


54.

The usual cause (s) of peptic ulceration is/are

  • lower rate of secretion of gastric juice

  • higher rate of secretion of gastric and duodenal juices

  • improper neutralisation of gastric juice by duodenal juices

  • imbalance between the rate of secretion of gastric juice and the degree of protection offered by gastro-duodenal mucosa


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55.

Which of the following statements is/are correct regarding the effects of pH on enzyme catalysed reactions?

  • Direction of the reaction is influenced by [H+]

  • Ionisation state of dissociating groups on the enzyme is modified

  • Ionisation state of the substrate is modified.

  • Protein is not denatured with the change in pH


56.

Which of the following statements is/are correct for transduction?

  • It is observed in Gram positive and Gram negative bacteria.

  • Bacteria should be in state of competence

  • Transfer of DNA by a bacteriophage takes place.

  • Packaging of both host and phage DNA takes place


57.

Select the correct combination (s) from the following

  • Gir - Asiatic Lion

  • Sunderbans - Rhinoceros

  • Periyar - Indian Elephant

  • Corbet National Park - Red Panda


58.

Intrinsic and extrinsic pathways of blood clotting are interlinked at the activation steps of which of the following factors?

  • Factor IX

  • Factor IV

  • Factor X

  • Factor XIIIa


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59.

Which of the following pairs of cranial nerves is/are of mixed category?

  • Glossopharyngeal and hypogrossal

  • Trigeminal and abducens

  • Trigeminal and facial

  • Glossopharyngeal and vagus


C.

Trigeminal and facial

D.

Glossopharyngeal and vagus

Mixed nerves contain both sensory and motor fibres

Name Composition Functions
Glossopharyngeal (IX) Motor and sensory (mixed) It serves the pharynx for swallowing.
Vagus Mixed Sensations from visceral (internal) organs and parasympathetic motor regulation of visceral organs
Hypoglossal Motor Serves muscles of the tongue
Trigeminal Mixed Sensory from face and mouth; motor to muscles of mastication
Facial Mixed Serves the muscles of facial expression, lacrimal glands and salivary glands
Abducens Motor Serves the lateral rectus eye muscle


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60.

Opening and closing of stomata is controlled by

  • abscisic acid

  • CO2 concentration

  • O2 concentration

  • light intensity


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