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NEET Biology Solved Question Paper 2014

Multiple Choice Questions

31.

Which of the following hormones is a derivative of fatty acid?

Gastrin
Thyroxin
Estrogen
Prostaglandins

32.
Which of the following is not involved in muscular contraction?

Calcium ion

Troponin

Actin

Magnesium ion

Magnesium ion

Muscle contraction is the shortening or tensing of a part or organ (i.e., a muscle fibre). Magnesium ion is not involved directly in the process of muscle contraction.

Actin and troponin are the globular proteins made up of two and three globular peptides respectively. Calcium ion also play a key regulatory role in muscle contraction, i.e., increase in the calcium ion levels lead to their binding to the troponin subunit.

33.

Proximal convoluted tubule of nephron is responsible for

filtration of blood
maintenance of glomerular filtration rate
selective reabsorption of glucose, amino acid, NaCl and water
reabsorption of salts only

34.

Which of the following bacteria is observed as chain-like formation?

Escherichia coli
Bacillus subtilis
Streptococcus pyogenes
Micrococcus flavus

35.

The partial floral formula of a flower is K₍₅₎C₅A_{( $\infty$ )} $G$ _(5).

Which of the following set of information is conveyed here?

Gamosepalous, polypetalous, syncarpous and superior ovary
Polysepalous, polypetalous, syncarpous and inferior ovary
Gamosepalous, gamopetalous, polycarpous and superior ovary
Gamosepalous, polypetalous, syncarpous and inferior ovary

36.

Match the items in column I with those in column II and choose the correct answer

Column I	Column II
A. Control of weeds	1. Gibberellin
B. Induction of germination	2. Cytokinin
C. Ripening of fruit	3. 2, 4- D
D. Delaying of senescence	4. Ethylene

A- 2; B- 4; C- 3; D- 1
A- 3; B- 1; C- 4; D- 2
A- 1; B- 2; C- 4; D- 3
A- 2; B- 3; C- 1; D- 4

37.

Out of 38 molecules of ATP produced upon aerobic respiration of glucose, the break up if ATP production in glycolysis (P), pyruvate to acetyl Co- A formation (Q) and Krebs' cycle (R) is as follows