GATE XL topic:life-sciences PYQs & Answers — Page 109

Questions 1081–1090 of 1235. Imported answers require independent review unless marked reviewed.

Match the disorders/diseases listed in Column I to their respective causative agents listed in Column II.

Column I: I) African tick bite fever; II) Yellow fever; III) Microcephaly; IV) Sleeping sickness

Column II: i) Trypanosoma gambiense; ii) Zika virus; iii) Rickettsia sp.; iv) Flavivirus

Your answerChoose one option.

I-iv, II-ii, III-iii, IV-i

I-iii, II-iv, III-ii, IV-i

I-iii, II-iv, III-i, IV-ii

I-ii, II-i, III-iv, IV-iii

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Glucose monomers are joined together by glycosidic linkages to form a cellulose polymer. During this process, changes in the free energy, total energy, and entropy respectively are represented correctly by which ONE of the following options?

Your answerChoose one option.

+ΔG, +ΔH, +ΔS.

+ΔG, -ΔH, -ΔS.

-ΔG, +ΔH, +ΔS.

+ΔG, +ΔH, -ΔS.

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In Drosophila melanogaster, a mutation in Ultrabithorax which defines the third segment of the thorax or T3 leads to development of four wing flies, as the halteres develop into a second pair of wings. Which ONE of the following phenotypes in fly will result from overexpression of Ultrabithorax in the second thoracic segment?

Your answerChoose one option.

Four winged flies.

Two wings and two halteres flies.

Flies with four halteres.

Flies with two halteres.

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Which ONE of the following is TRUE in case of respiratory acidosis?

Your answerChoose one option.

Increased rate of ventilation is a cause of respiratory acidosis

Blood pH more than 7

Increased levels of carbon dioxide in blood

Acidosis can be compensated through reduction of bicarbonate levels in plasma

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Match the proteins / molecules listed in column I with the cellular location mentioned in the column II.

Column I I) Galactosyl transferase II) Cytochrome oxidase III) Clathrin IV) Tubulin

Column II (i) Vesicles (ii) Cytosol (iii) Golgi complex (iv) Mitochondria

Your answerChoose one option.

I-ii; II-iii; III-i; IV-iv

I-iii; II-iv; III-i; IV-ii

I-iii; II-iv; II-ii; IV-i

I-iv; II-iii; III-ii; IV-i

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In an experiment, nucleus from a Drosophila oocyte was transplanted into the anterior part of another oocyte, at a region opposite to the existing nucleus. Which ONE of the following phenotypes will the developing egg show?

Your answerChoose one option.

A ventralized egg with no dorsal appendages

A dorsalized egg with two dorsal appendages

A ventralized egg with two dorsal appendages

A dorsalized egg with four dorsal appendages

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Match the organisms listed in Column I with the features listed in Column II

Column I I) Tapeworm II) Jellyfish III) Trichinella IV) Earthworm

Column II (i) Bioluminescence (ii) Viviparous (iii) Lateral heart (iv) Microvilli on the body surface

Your answerChoose one option.

I-iii; II-ii; III-iv; IV-ii

I-ii; II-iv; III-i; IV-iii

I-iv; II-i; III-ii; IV-iii

I-iv; II-iii; III-ii; IV-i

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Which ONE of the following statements is NOT part of the classical Darwinian theory of evolution by natural selection?

Your answerChoose one option.

A trait which is constantly used will get inherited by next generation.

Phenotype variations exist among the individuals of a population of a species

Individuals that best fit into a given environment are more likely to survive

Each population can randomly acquire a distinct and separate suite of variations.

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A population of rabits was determined to have a birth rate of 200 and mortality rate of 50 per year. If the initial population size is 400 individuals, after 2 years of non-infered breeding the final population size will be ____________.

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In a population which is in Hardy-Weinberg equilibrium, the frequency of occurrence of a disorder caused by recessive allele (q) is 1 in 100. The frequency of heterozygotes in the population will be ____________. (Give the answer to three decimal places).

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GATE XL topic:life-sciences PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20