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Biological Science - 2019 Past Year Paper - IIT JAM MCQ


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30 Questions MCQ Test - Biological Science - 2019 Past Year Paper

Biological Science - 2019 Past Year Paper for IIT JAM 2024 is part of IIT JAM preparation. The Biological Science - 2019 Past Year Paper questions and answers have been prepared according to the IIT JAM exam syllabus.The Biological Science - 2019 Past Year Paper MCQs are made for IIT JAM 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Biological Science - 2019 Past Year Paper below.
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Biological Science - 2019 Past Year Paper - Question 1

Tropic hormones or tropins are secreted by

Biological Science - 2019 Past Year Paper - Question 2

Which one of the following is necessary for evolution to be driven by genetic drift?

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Biological Science - 2019 Past Year Paper - Question 3

Biotin deficiency can arise due to consumption of diet rich in

Biological Science - 2019 Past Year Paper - Question 4

In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to be

Biological Science - 2019 Past Year Paper - Question 5

Thomas Cech discovered RNA self-splicing in

Biological Science - 2019 Past Year Paper - Question 6

The core glycan moiety of N-linked glycoproteins contains

Biological Science - 2019 Past Year Paper - Question 7

Organophosphate pesticides kill insects by inhibiting

Biological Science - 2019 Past Year Paper - Question 8

Which one of the following conditions leads to an approximately 50-fold increase in RNA transcription of the lac operon? (CRP stands for cyclic AMP [cAMP] receptor protein)
P: Binding of CRP-cAMP complex to a site near the lac promoter
Q: Binding of CRP-cAMP complex to a site near the lac operator
R: Lac repressor bound to the lac operator
S: Lac repressor not bound to the lac operator

Biological Science - 2019 Past Year Paper - Question 9

Which one of the following photosynthetic organisms does not release oxygen as a by-product of the light reaction?

Biological Science - 2019 Past Year Paper - Question 10

In plant systematics, which one of the following species belongs to the branch at the very base of the angiosperm phylogenetic tree?

Biological Science - 2019 Past Year Paper - Question 11

The molecular weight (Da) of the zwitterionic form of the peptide GAGAGAGA is closest to

Biological Science - 2019 Past Year Paper - Question 12

If y = x2, then dx/dy is 

Biological Science - 2019 Past Year Paper - Question 13

Which one of the following plots represents exponential growth?

Biological Science - 2019 Past Year Paper - Question 14

Naive T lymphocytes can be stimulated by the activated dendritic cells that bear

Biological Science - 2019 Past Year Paper - Question 15

In rearrangement of immunoglobulin heavy chain, N-nucleotides

Biological Science - 2019 Past Year Paper - Question 16

Which one of the following matches is CORRECT between the microorganisms given in Group A with their requirement of oxygen in Group B?

Biological Science - 2019 Past Year Paper - Question 17

Which one of the following is TRUE for the function  = x2 + 1?

Biological Science - 2019 Past Year Paper - Question 18

Match the metabolic pathways in Group A with corresponding enzymes in Group B

Biological Science - 2019 Past Year Paper - Question 19

Which one of the following statements is INCORRECT for competitive inhibition in an enzyme catalysed reaction?

Biological Science - 2019 Past Year Paper - Question 20

In a human cell, β-oxidation of a saturated fatty acyl CoA molecule produced 8 acetyl CoA, 7 H2O and 28 ATP. The oxidised fatty acyl CoA is 

Biological Science - 2019 Past Year Paper - Question 21

Match the diseases in Group A with their corresponding causative microorganisms in Group B

Biological Science - 2019 Past Year Paper - Question 22

In an experiment to examine the role of exopolymeric substances (EPS) on bacterial growth, a wildtype strain (S+) and a mutant strain deficient in EPS production (S) were grown in monocultures as well as in co-culture (in equal proportion of S+and S). The CFU (colony forming units) of these cultures measured after 24 hours are shown in the following figure.

Q. Which one of the following phenomena best describes the interaction between the wild-type strain (S+ ) and mutant strain (S)?

Biological Science - 2019 Past Year Paper - Question 23

If a fossil that has been discovered recently contains 0.2% of the that was present when the fossil was formed, then the age of the fossil in years is likely to fall in the range of

Biological Science - 2019 Past Year Paper - Question 24

A photosynthetic algal filament is illuminated with white light that has passed through a prism such that the left and the right ends of the filament receive violet and red lights, respectively. The amount of oxygen released by this filament will be

Biological Science - 2019 Past Year Paper - Question 25

Which one of the following statements is TRUE for dynein and kinesin family of motor proteins?

Biological Science - 2019 Past Year Paper - Question 26

Which one of the following statements is TRUE about flagella?

Biological Science - 2019 Past Year Paper - Question 27

Caffeine is a plant-based drug that

Biological Science - 2019 Past Year Paper - Question 28

2,4-Dinitrophenol (DNP) is an uncoupler that

Biological Science - 2019 Past Year Paper - Question 29

Which one of the following statements is INCORRECT about the prokaryotic and eukaryotic organisms on the Earth?

Biological Science - 2019 Past Year Paper - Question 30

Which is the CORRECT chronological order, from the least recent to the most recent, of the four evolutionary events listed below?
P. Earliest evidence of terrestrial arthropods
Q. Appearance of  Ediacaran fauna
R. Extinction of the large, non-flying dinosaurs
S. Origin of mammals

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