GTSE Practice Test for Life Science for CSIR NET & SET Exams

Question 1

Which of the following toxins is involved in the modification of the G protein-coupled receptor?

Question 2

The frequency of two alleles in a gene pool is 0.28 (B) and 0.72 (b). Find the percentage of heterozygous individuals in the population.

Question 3

To maintain the equilibrium by Hardy Weinberg law, which one of the following conditions should be true?

Question 4

What is the study of date and time of seed germination, vegetative growth, flowering and fruiting, leaf fall, seed and fruit dispersal called?

Question 5

Match the given types of cell culture to their examples

Question 6

Which one of the following statements regarding freeze-fracture and freeze-etch technique is correct?

Question 7

What type of enzyme inhibition does the given Lineweaver-Burk plot represent?

Question 8

Which type of cell junction involves in synchronizing the beating of heart muscle cells?

Question 9

Which of the given statements about the regulation of gene expression in lambda bacteriophage is false?

Question 10

Fight-or-flight response is a classical example of which type of peripheral nervous system?

Question 11

RAS proteins play a crucial role in human cancer. RAS protein is regulated by both guanine nucleotide-exchange factor (GEF) that switches GDP to GTP and GTPase- activating enzyme (GAP) which facilitates the hydrolysis of GTP. Which of the regulation in GEF and GAP lead to inhibit excess cell proliferation?

a) Non-functional GAP

b) Permanently active GAP

c) Non-functional GEF

d) Permanently active GEF

Question 12

Match the given TLRs to their specific recognition

Question 13

What type of interspecific competition does the picture given below depict?

Question 14

Which type of DNA has a major groove is present, basepair/helical turn is 11 and helix rise/basepair is 2.6Å?

Question 15

Which of one the given choices is not involved in the process of a primary autotrophic ecological succession?

Question 16

Which of the listed drugs below binds tightly to actin filaments and stabilize them against depolymerization?

Question 17

Photosynthetic pigments are located in membrane on specific areas called as-

Question 18

Microtubules are 25 nm thick, 15nm core formed of 13 helically arranged protofilaments made up of-

Question 19

Intermediate filaments are made up of-

Question 20

In hexose monophosphate shunt, the CO₂ molecules evolved is-

Question 21

A gene having reading frame ABCD-EFGH (with the hyphen as centromere) undergoes pericentric inversion, then which one of the following will be the resultant gene after inversion?

Question 22

Cell fate is defined as future identity, or the identity of its daughter cells, before it is actually phenotypically detectable through differentiation or division. A fate of cell is specified by different ways given below. Find out the incorrect one.

Question 23

Given below are a set of statistical methods/parameters (Column A) and their potential applications/utility in biological research (column B), in a random manner.

Which of the following options is a correct match of entries in Column A and B?

Question 24

Enzyme linked Immunosorbent assay is commonly known as ELISA . where Ag-Ab interaction is monitored by enzyme measurement. Which is not application of ELISA ?

Question 25

A biosensor is a measuring device used to detect chemical compounds by converting a biological response into an electrical signal. Given below is the schematic diagram of biosensor. Identify the blank component.

Question 26

Na+ and K+ pump

P. is a heterodimer composed of an alpha- subunit and glycoprotein beta- subunit

Q. contains alpha- subunit responsible for ATP hydrolysis and ion pumping.

R. contains multipass transmembrane alpha- subunit.

S. is a palytoxin sensitive

Question 27

Ecological succession is the process of gradual change in the structure of species of an ecological community with time. Given below are stages of autotrophic ecological succession (COLUMN A) with their characteristic features (COLUMN B). Find their correct match-

Question 28

Terpenes biosynthesis involves synthesis of five-carbon isoprene units, then their repetitive condensations to form larger prenyl diphosphates which form basic terpenoid skeletons. Following are some statements about terpene biosynthesis in plants:

A) Mevalonate pathway of terpene biosynthesis occurs in plastids of plant cells.

B) Carbocationic reaction mechanism is employed by terpene synthase for conversion of prenyl diphosphates to terpene carbon skeleton.

C) Divalent ion Fe²⁺ is required by terpene synthase for ionization of prenyl diphosphates.

D) Mevalonate pathway provides sterols, dolichols and sesquiterpenes substrates for modification into different of terpenes.

E) Methylerylthritol 4-phosphate (MEP) pathway initiates with condensation of acetyl-CoA

Which of the above statements are INCORRECT?

Question 29

Which of following amino acid is derived from pyruvate in a transamination step?

Question 30

Which of the following genes specify adaxial cell fate during leaf primordia development in Arabidopsis thaliana?

Question 31

In the given pie-chart, what is the number of employees working in department A?

Question 32

While introducing a boy, Harshal says, "He is the son of my father’s, father’s only daughter-in-law’s sister." How is the boy related to Harshal?

Question 33

A can go round a circular path 8 times in 40 min, if the radius of the circle in increased to 10 times the original diameter, the time required by A to go round the new path once travelling at the same speed as before is

Question 34

In a group of students, 70% can speak English and 65% can speak Hindi. If 27% of the students can speak none of the two languages, then what per cent of the group can speak both the languages?

Question 35

In the given pie-chart, the expenditure on steel is what percent of the expenditure on cement?

Question 36

In an examination average marks of passed and failed student were 39 and 15 respectively. If average marks obtained by all 120 students was 35, then number of passed students was:

Question 37

If the 4^th term of an arithmetic progression is 14 and the 12^th term is 70, then the first term is

Question 38

A shopkeeper marked the price of a power bank 32% above its cost price. If he gives a discount of 16%, then find his profit/loss percentage.

Question 39

The following pie-chart shows the percentage-wise distribution of the number of students in five different schools P, Q, R, S and T. Total number of students in all five schools together is 8400.

The number of students in school T is what percentage of the total number of students in schools Q and S together.

Question 40

The average weight of 45 passenger on board an aircraft is 50 kg. If the weight of 5 crew members is added, the average is reduced by half kilogram. What is the average weight of the five crew members?