Free MCQs & Online Quiz Practice for Exams

Q: The body temperature at 104°F is known as critical because it causes

A) Nerves breakdown

B) Enzymes stop to work

C) Boiling of body water

D) None of them

Q: The site of the cell for the dark reaction is

A) Mitochondria

B) Ribosome

C) Granum of chloroplast

D) Stroma of chloroplast

Q: The organisms responsible for trapping light energy are

A) Plants

B) Photosynthetic organisms

C) Algae

D) Fungi

Q: Photosynthesis takes place in

A) Mesophyll cells

B) Guard cells

C) Phloem cells

D) All of the above

Q: One of the following is not a limiting factor for enzymes in photosynthesis

A) CO₂ concentration

B) Temperature

C) Light intensity

D) Pigments

Q: One of the following pair of light colours is important for photosynthesis

A) Green and yellow

B) Yellow and orange

C) Green and orange

D) Red and blue

Q: One of the following may not be required for respiration

A) Oxygen

B) Food molecules

C) Enzymes

D) CO₂

Q: In the structure of ATP, the three phosphate groups are linked to

A) Ribose

B) Glucose

C) Adenine

D) H₂O

Q: A car engine uses fuel to do work. To carry out functions, a living cell uses

A) Electric power

B) Generator

C) ATP

D) Heat energy

Q: Inside a bacterial cell, glycolysis occurs in

A) Mesosome

B) Cytoplasm

C) Mitochondria

D) Nucleoid

Q: The consumption during the conversion of pyruvic acid into ethanol during anaerobic respiration is

A) One NADH₂

B) One NADH₂ and CO₂

C) Two NADH₂

D) CO₂

Q: The solution set of |-x| = 0 is ___________

A) [A]-1

B) [-1]

C) [0]

D) [ ]

Q: The solution set of 5-3x = -4 is_______

A) [3]

B) [1,3]

C) [-3]

D) [9]

Q: matrix [0 0 ; 0 0] is :

A) an identity matrix w.r.t multiplication

B) a column matrix

C) an identity matrix w.r.t addition

D) a row matrix

Q: The matrix [4 0 ; 0 -12] is:

A) a scalar matrix

B) 2x3 matrix

C) a diagonal matrix

D) None of these

Q: if A = [-1 -2 ; 3 1], then adj A is equal to :

A) [-1 - 2 ; 3 1]

B) [1 2 ; -3 -1]

C) [-1 2 ; 3 1]

D) [1 -2 ; 3 1]

Q: If A = [ 2 3 ; 3 4], then A⁻¹equals

A) [ 4 3 ; -3 2]

B) [ 4 -3 ; -3 2]

C) [ -2 3 ; 3 -4]

D) [ -4 3 ; 3 -2]

Q: For what value of d is the 2x2 matrix [ 5 1.5 ; 2 d], NOT inversible ?

A) -0.6

B) 0

C) 0.6

D) 3

Q: Suppose A and B are 2x5 matrices, Which of the following are the dimensions of the matrix A+B?

A) 2x5

B) 10x10

C) 7x1

D) 7x7

Q: Which of the following is the multiplicative inverse of [1 2 ; 0 1]

A) [1 2 ; 0 1]

B) [1 -2 ; 0 1]

C) [-1 2 ; 0 1]

D) [1 -2 ; 0 -1]