Skip to content
Independent guidance for Pakistan's healthcare students
Student forum · Coming soonAggregate calculator
Medical AdmissionPAKISTAN
Practice MDCAT

LEARN AT YOUR OWN PACE

Nursing Question Bank

Think through each question, then reveal the answer and explanation.

Take a practice test →

Prepare for Army AFNS and civilian nursing admissions in one place. Choose a pathway or browse all questions.
Each pathway includes common preparation. These are original practice questions, not verified official past papers.

1265 available questions

Biology · Question 471

What is the cell’s immediate usable source of energy?

  1. Glucose directly in every reaction
  2. ATP
  3. Fatty acids directly in every reaction
  4. Amino acids
Show AnswerHide Answer

Correct answer: B

ATP

ATP transfers readily usable chemical energy to cellular processes.

Biology · Question 472

Carbohydrates are composed principally of:

  1. Carbon, hydrogen and oxygen
  2. Carbon and nitrogen only
  3. Hydrogen, nitrogen and oxygen
  4. Carbon, hydrogen and nitrogen
Show AnswerHide Answer

Correct answer: A

Carbon, hydrogen and oxygen

Carbohydrates contain carbon, hydrogen and oxygen, often close to a 1:2:1 ratio.

Biology · Question 473

Animals obtain most dietary carbohydrate from:

  1. Starch
  2. Glycogen only
  3. DNA
  4. Cholesterol
Show AnswerHide Answer

Correct answer: A

Starch

Starch is a major plant storage polysaccharide and an important dietary carbohydrate for animals.

Biology · Question 474

Glycogen is classified as a:

  1. Monosaccharide
  2. Disaccharide
  3. Polysaccharide
  4. Oligosaccharide
Show AnswerHide Answer

Correct answer: C

Polysaccharide

Glycogen is a highly branched glucose polysaccharide used for energy storage in animals.

Biology · Question 475

Which is not a normal function of lipids?

  1. Protection and cushioning
  2. Absorbing water as their main role
  3. Long-term energy storage
  4. Thermal insulation
Show AnswerHide Answer

Correct answer: B

Absorbing water as their main role

Lipids store energy, insulate and protect; water absorption is not their main biological function.

Biology · Question 476

Amino acids differ from one another mainly in their:

  1. Alpha carbon atom
  2. Amino group
  3. Carboxyl group
  4. R group
Show AnswerHide Answer

Correct answer: D

R group

The variable side chain, or R group, determines the distinguishing properties of each amino acid.

Biology · Question 477

A nucleoside consists of:

  1. A nitrogenous base only
  2. A pentose sugar only
  3. A phosphate group and sugar
  4. A pentose sugar and a nitrogenous base
Show AnswerHide Answer

Correct answer: D

A pentose sugar and a nitrogenous base

A nucleoside contains a nitrogenous base attached to a pentose sugar; adding phosphate produces a nucleotide.

Biology · Question 478

How many amino-acid residues are present in human insulin?

  1. 51
  2. 21
  3. 41
  4. 30
Show AnswerHide Answer

Correct answer: A

51

Human insulin contains two polypeptide chains with a total of 51 amino-acid residues.

Biology · Question 479

Adult haemoglobin A is composed of:

  1. Four beta chains
  2. One alpha and three beta chains
  3. Four alpha chains
  4. Two alpha and two beta chains
Show AnswerHide Answer

Correct answer: D

Two alpha and two beta chains

Adult haemoglobin A is a tetramer containing two alpha and two beta globin chains.

Biology · Question 480

Which protein is a classic example of quaternary structure?

  1. DNA nucleotide
  2. Haemoglobin
  3. Glucose
  4. A single amino acid
Show AnswerHide Answer

Correct answer: B

Haemoglobin

Haemoglobin has four associated polypeptide subunits and therefore quaternary structure.