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Biological Science - 2014 Past Year Paper - IIT JAM MCQ


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30 Questions MCQ Test IIT JAM Past Year Papers and Model Test Paper (All Branches) - Biological Science - 2014 Past Year Paper

Biological Science - 2014 Past Year Paper for IIT JAM 2024 is part of IIT JAM Past Year Papers and Model Test Paper (All Branches) preparation. The Biological Science - 2014 Past Year Paper questions and answers have been prepared according to the IIT JAM exam syllabus.The Biological Science - 2014 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 - 2014 Past Year Paper below.
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Biological Science - 2014 Past Year Paper - Question 1

Transposons are distributed through the human genome and constitute about 45% of the genome.Retrotransposons are

Biological Science - 2014 Past Year Paper - Question 2

Several enzymes are involved in DNA repair pathways. Which one of the following enzymes is also referred to as a suicidal enzyme?

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Biological Science - 2014 Past Year Paper - Question 3

In the lactose operon, the lac repressor binds to the operator and does NOT allow RNA polymerase to bind to the promotor. Allolactose reduces the affinity of the repressor for the lac operator by binding and changing its conformation. Thus, addition of lactose or a synthetic inducer stimulates the transcription of the lac operon structural genes.

Synthetic inducers are called gratuitous inducers because

Biological Science - 2014 Past Year Paper - Question 4

Group I lists certain plant fungal diseases. Group II lists the causative agents. Match the diseases with the corresponding causative agents.

Biological Science - 2014 Past Year Paper - Question 5

Some mushrooms are poisonous and are popularly called “death caps” or “destroying angles”.Which one of the following is the deadliest mushroom?

Biological Science - 2014 Past Year Paper - Question 6

Flower is a modified shoot or a branch. Which one of the following DOES NOT provide evidence in support of the above statement?

Biological Science - 2014 Past Year Paper - Question 7

A few bacterial general have cell walls composed of pseudomurein. These polymeric structures resemble eubacterial peptidoglycan but are very different in composition. Which one of the following possesses such structures in its cell wall?

Biological Science - 2014 Past Year Paper - Question 8

Anoxygenic photosynthetic bacteria possess bacteriochlorophyll which absorbs light in the

Biological Science - 2014 Past Year Paper - Question 9

Which one of the following statements on ‘cro repressor’ and ‘immunity repressor’ of lambda phage is NOT correct?

Biological Science - 2014 Past Year Paper - Question 10

Following uncoating in the cytoplasm, parental (+)- strand RNA of poliovirus is used as template for the synthesis of the polymerase that catalyzes the formation of the (–)-strand RNA. This enzyme is called

Biological Science - 2014 Past Year Paper - Question 11

Viriods are agents of infections diseases. Which one of the following statements is NOT correct?

Biological Science - 2014 Past Year Paper - Question 12

Each of the four options given below contains the name of an antibiotic, an organism which produces an antibiotic and a possible mode of action. Which option contains the correct combination?

Biological Science - 2014 Past Year Paper - Question 13

Commensalism refers to

Biological Science - 2014 Past Year Paper - Question 14

How many time can a 6 kb fragment be present in 3.9 micrograms of DNA containing 6 billion bases? Assume the MW of one bp to be 650 Da.

Biological Science - 2014 Past Year Paper - Question 15

Numerous bacteria are present in the human intestinal tract. Group I lists bacteria and Group II lists their usual location. Match the bacteria with their location.

Biological Science - 2014 Past Year Paper - Question 16

Charles Darwin’s theory about evolution by natural selection was influenced by the works of

Biological Science - 2014 Past Year Paper - Question 17

Which one of the following sequence is logically INCORRECT?

Biological Science - 2014 Past Year Paper - Question 18

Biological nitrogen fixation by free- living and symbiotic microorganisms refers to the enzymatic conversion of

Biological Science - 2014 Past Year Paper - Question 19

The following figure represents population growth in two species.

Which one of the following options is consistent with this graph?

Biological Science - 2014 Past Year Paper - Question 20

Darwinian theory of evolution by natural selection can explain the

Biological Science - 2014 Past Year Paper - Question 21

C3 photosynthesis involves the conversion of atmospheric carbon dioxide to 3- carbon phosphoglycerate. Likewise, C4 photosynthesis converts carbon dioxide to 4- carbon oxaloacetate.
The C4 pathway

Biological Science - 2014 Past Year Paper - Question 22

Consider the following anatomical features:

All chordates are characterized by the presence of

Biological Science - 2014 Past Year Paper - Question 23

In which of the following are the plant structures correctly matched with their edible parts? 

Biological Science - 2014 Past Year Paper - Question 24

When different species interact, they may exert selective pressures on each other, Below, different types of species interactions are matched with expected evolutionary responses:

P. Competition : NO selection on either competitor
Q. Competition : selection towards decreased competitive effects
R. Predation : selection towards enhanced prey defense
S. Predation : selection on predator’s traits that counter improved prey defense
T. Commensalism : NO selection on either the commensal or the host

Which pairs are correctly matched?

Biological Science - 2014 Past Year Paper - Question 25

The term “biodiversity hotspot” refers to which of the following?

P. Hot and humid regions of the world
Q. Areas with high species richness
R. Areas with high levels of endemism
S. Areas where endangered species congregate in summers
T. Areas where warm- blooded species are more common that cold- blooded species

Biological Science - 2014 Past Year Paper - Question 26

In a population at Hardy- Weinberg equilibrium, the frequency of a recessive allele that causes a genetic disorder is 0.3. What percentage of the population is expected to suffer from this condition?

Biological Science - 2014 Past Year Paper - Question 27

Number of chromosomes in Down’s syndrome is

Biological Science - 2014 Past Year Paper - Question 28

Double fertilization in angiosperms leads to the production of

Biological Science - 2014 Past Year Paper - Question 29

Many disease- causing microbes are becoming resistant to drugs. This could be an example of

Biological Science - 2014 Past Year Paper - Question 30

Deserts are arid ecosystems that occur near latitudes of 30 degrees North and South. Which one of the following can explain this geographic pattern?

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