Exam Body

Year

Subject

Paper Type

POST UTME REDEEMERS UNIVERSITY 2017 Biology | Objective

Are you preparing for POST UTME REDEEMERS UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

In a photosynthetic pathway, which of the following electron carriers is responsible for transferring electrons from plastocyanin to the reaction center of photosystem II?

A. Ferredoxin

B. Cytochrome b6f complex

Correct C. Plastocyanin

D. P700

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 2

A 2.5-mL sample of a 0.15 M NaCl solution is diluted to a total volume of 10 mL. What is the concentration of the resulting solution?

Correct A. 0.015 M

B. 0.015 M

C. 0.015 M

D. 0.015 M

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 3

In a typical animal cell, which of the following organelles is responsible for protein synthesis?

A. Mitochondria

B. Endoplasmic reticulum

Correct C. Ribosomes

D. Lysosomes

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 4

A plant cell is placed in a solution with a pH of 5.5. What will happen to the cell membrane?

A. The cell membrane will become more permeable.

Correct B. The cell membrane will become less permeable.

C. The cell membrane will remain unchanged.

D. The cell membrane will rupture.

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 5

A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?

A. Mitochondria

B. Chloroplast

C. Vacuole

Correct D. Nucleus

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 6

In the context of osmoregulation, what is the primary function of the hypothalamus in regulating thirst and hunger?

A. To regulate the release of ADH and aldosterone

Correct B. To stimulate the sensation of thirst and hunger

C. To control the balance of electrolytes and water in the body

D. To regulate the release of insulin and glucagon

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 7

A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?

A. Cornea

B. Iris

Correct C. Retina

D. Lens

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 8

In the context of growth and regulation, what is the primary function of the pituitary gland?

Correct A. To regulate the release of hormones that stimulate growth

B. To regulate the release of hormones that inhibit growth

C. To regulate the release of hormones that stimulate metabolism

D. To regulate the release of hormones that inhibit metabolism

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 9

A diagram of the human circulatory system is shown below. Which part of the system is responsible for transporting oxygenated blood from the lungs to the heart?

A. Pulmonary Veins

B. Pulmonary Arteries

C. Aorta

Correct D. Superior Vena Cava

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 10

In the context of coordination, what is the primary function of the cerebellum?

A. To regulate the release of hormones that stimulate movement

B. To regulate the release of hormones that inhibit movement

Correct C. To coordinate voluntary movements

D. To regulate the release of hormones that stimulate sensation

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 11

In a population of 1000 individuals, 80% are homozygous dominant for the gene controlling flower color, 15% are homozygous recessive, and 5% are heterozygous. What is the frequency of the recessive allele?

Correct A. 0.15

B. 0.20

C. 0.25

D. 0.30

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 12

A diagram of a plant cell is shown below. Which organelle is responsible for protein synthesis?

Correct A. Ribosome

B. Mitochondria

C. Endoplasmic reticulum

D. Golgi apparatus

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 13

The Hardy-Weinberg principle states that a population will be in equilibrium if the following conditions are met. Which of the following is NOT a condition for Hardy-Weinberg equilibrium?

A. No mutation

B. No gene flow

C. Random mating

Correct D. Cons\tant population size

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 14

A diagram of a kidney is shown below. Which part of the kidney is responsible for filtering waste products from the blood?

Correct A. Nephron

B. Renal pelvis

C. Renal artery

D. Renal vein

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 15

A diagram of a neuron is shown below. Which part of the neuron is responsible for transmitting signals to other neurons?

Correct A. Axon

B. D\endrite

C. Cell body

D. Myelin sheath

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 16

In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?

Correct A. 0.36

B. 0.64

C. 0.72

D. 0.84

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 17

A researcher is studying the effect of pH on the growth of E. coli. The graph below shows the growth rate of E. coli at different pH levels. What is the pH level at which the growth rate is maximum?

Correct A. 7

B. 6

C. 8

D. 9

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 18

A species of bird has a wing span of 1.5 meters. If the bird is flying at a speed of 50 km/h, what is the power output of the bird's wings?

Correct A. 1000 W

B. 500 W

C. 2000 W

D. 3000 W

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 19

A researcher is studying the effect of temperature on the growth of a microorganism. The graph below shows the growth rate of the microorganism at different temperatures. What is the temperature at which the growth rate is maximum?

A. 30°C

Correct B. 40°C

C. 50°C

D. 60°C

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 20

A species of plant has a photosynthetic rate of 10 mg CO2/h. If the plant is exposed to a light intensity of 100 μmol/m²s, what is the rate of photosynthesis?

A. 0.1 mg CO2/h

B. 1 mg CO2/h

Correct C. 10 mg CO2/h

D. 100 mg CO2/h

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 21

In a population of E. coli, the average generation time is 20 minutes. If the population size is 10^6, what is the growth rate cons\tant (k) if the population size doubles in 40 minutes?

A. 0.017

Correct B. 0.034

C. 0.051

D. 0.068

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 22

A 5% solution of glu\cose in water is isotonic with a 0.2 M solution of NaCl. What is the molarity of the glu\cose solution?

A. 0.1

Correct B. 0.2

C. 0.3

D. 0.4

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 23

A diagram of a cell membrane is shown below. What is the function of the structure labeled 'A'?

Correct A. Selective permeability

B. Active transport

C. Passive transport

D. Osmosis

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 24

A 2.0 g sample of a subs\tance is dissolved in 100 mL of water. The solution has a pH of 3.5. What is the concentration of hydrogen ions in the solution?

Correct A. 1.0 x 10^-4

B. 1.0 x 10^-3

C. 1.0 x 10^-2

D. 1.0 x 10^-1

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 25

A diagram of a photosynthetic pathway is shown below. What is the role of the structure labeled 'B'?

A. Light-dep\endent reactions

Correct B. Light-indep\endent reactions

C. ATP synthesis

D. NADPH synthesis

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Help others prepare! Share this practice hub:

Chat with Support