MATRIC • FSC • NTS • ETEA • CSS • PMS etc MCQs Learn, Practice, Prepare, Succeed! Prepare Today, Succeed Tomorrow!

Q: Increase or decrease in temperature beyond the optimum temperature will

A) Increase the rate of reaction

B) Decrease the rate of reaction

C) Not affect the rate of reaction

D) Denature the enzyme

Q: Trypsin, an enzyme, works at

A) Alkaline pH

B) Acidic pH

C) Neutral pH

D) pH does not affect

Q: Change in environmental factors will affect enzyme activity and therefore may affect

A) Metabolism

B) Respiration

C) Digestion

D) All of them

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: 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