Practice Pakistan's most useful MCQs for competitive exams

Which of the following occurs in anaerobic respiration but not in aerobic respiration?

• (A)  Release of CO2
• (B)  Reduction of NAD
• (C)  Formation of ATP
• (D)  Production of ethanol from acetaldehyde

Answer

Submitted By :Ali Uppal

Which of the following does not show quaternary structure____________?

• (A)  Haemoglobin
• (B)  Pepsin
• (C)  Fibrin
• (D)  Insulin

Answer

Submitted By :Ali Uppal

The type of learning in which there is loss or decrease in response to repeated stimuli?

• (A)  Imprinting
• (B)  Habituation
• (C)  Latent learning
• (D)  Insight learning

Answer

Submitted By :Ali Uppal

Keto group is represented as___________?

• (A)  CO
• (B)  C-COO-C
• (C)  HCOH
• (D)  HOH

Answer

Submitted By :Ali Uppal

Sleep movements are a type of___________?

• (A)  Turgor movements
• (B)  Growth movements
• (C)  Tactic movements
• (D)  Paratonic movments

Answer

Submitted By :Ali Uppal

How many carbon atoms are required to form a furan ring (ribofuranose)_____________?

• (A)  3
• (B)  4
• (C)  5
• (D)  2

Answer

Submitted By :Ali Uppal

In esterification OH comes from_______________?

• (A)  Organic acid
• (B)  Alcohol
• (C)  Water
• (D)  Sugar

Answer

Submitted By :Ali Uppal

Which one of the following is most likely to occur in an animal during winter?

• (A)  Activation of sweat glands
• (B)  Dilation of skin blood vessels
• (C)  Panting
• (D)  Thermogenesis

Answer

Submitted By :Ali Uppal

The one that stores calcium is __________?

• (A)  Sarcolemma
• (B)  Sarcoplasm
• (C)  Sarcoplasmic reticulum
• (D)  Cytosol

Answer

Submitted By :Ali Uppal

Which one is not found in fatty acids in acylglycerols____________?

• (A)  C-6
• (B)  C-25
• (C)  C-26
• (D)  C-30

Answer

Submitted By :Ali Uppal