Practice post utme al-hikmah university biology 2020 Past Questions

Question 1

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. 0.64

B. 0.36

C. 0.16

D. 0.04

Correct Answer: A

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

Question 2

A diagram of the human brain is shown below. Identify the part labeled 'A'.

Correct A. Cerebrum

B. Cerebellum

C. Brainstem

D. Frontal lobe

Correct Answer: A

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

Question 3

SHARED STIMULUS

[pH 7: 100%, pH 9: 80%, pH 11: 60%, pH 13: 40%]

In a study on the effect of pH on enzyme activity, the following data were collected:

A. pH 7

Correct B. pH 9

C. pH 11

D. pH 13

Correct Answer: B

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

Question 4

A diagram of the human kidney is shown below. Identify the part labeled 'B'.

A. Renal cortex

Correct B. Renal medulla

C. Renal pelvis

D. Ureter

Correct Answer: B

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

Question 5

A diagram of the human eye is shown below. Identify the part labeled 'C'.

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 6

In a eukaryotic cell, the process of cell division that results in the production of four daughter cells is known as

Correct A. Mitosis

B. Meiosis

C. Binary Fission

D. Endoreduplication

Correct Answer: A

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

Question 7

The process by which plants convert light energy into chemical energy is known as

Correct A. Photosynthesis

B. Respiration

C. Transpiration

D. Translocation

Correct Answer: A

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

Question 8

The type of tissue that is composed of nerve cells is known as

A. Epithelial Tissue

B. Connective Tissue

C. Muscle Tissue

Correct D. Nervous Tissue

Correct Answer: D

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

Question 9

The process by which water moves through a plant, from the roots to the leaves, is known as

Correct A. Transpiration

B. Translocation

C. Respiration

D. Photosynthesis

Correct Answer: A

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

Question 10

The type of e\cosystem that is characterized by a large number of species and a complex food web is known as

A. Grassland

B. Desert

Correct C. Rainforest

D. Tundra

Correct Answer: C

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

Question 11

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'?

A. 0.16

B. 0.36

Correct C. 0.64

D. 0.84

Correct Answer: C

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

Question 12

A cell in the small intestine is responsible for the absorption of glu\cose. Which of the following transport proteins is most likely involved in this process?

A. Glu\cose transporter 2

Correct B. Sodium-glu\cose cotransporter 1

C. Facilitated diffusion

D. Active transport

Correct Answer: B

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

Question 13

A person with a genetic disorder has a 25% chance of pas\sing the disorder to each offspring. What is the probability that the disorder will be passed on to at least one of the offspring?

A. 0.25

B. 0.5

C. 0.75

Correct D. 0.875

Correct Answer: D

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

Question 14

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 15

A person with a genetic disorder has a 50% chance of pas\sing the disorder to each offspring. What is the probability that the disorder will be passed on to at least one of the offspring?

A. 0.25

B. 0.5

C. 0.75

Correct D. 0.875

Correct Answer: D

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

Question 16

The diagram below shows the structure of a neuron. Which part of the neuron is responsible for transmitting signals to other neurons?

A. D\endrite

Correct B. Axon

C. Cell Body

D. Myelin Sheath

Correct Answer: B

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

Question 17

A population of rabbits has a birth rate of 0.05 and a death rate of 0.01. Assuming a cons\tant population size, what is the carrying capacity of the population?

Correct A. 50

B. 100

C. 200

D. 500

Correct Answer: A

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

Question 18

The diagram below shows the structure of a mitochondrion. Which part of the mitochondrion is responsible for generating ATP?

A. Matrix

Correct B. Cristae

C. Intermembrane space

D. Outer membrane

Correct Answer: B

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

Question 19

A genetic trait is controlled by a \single gene with two alleles. The dominant allele is 'A' and the recessive allele is 'a'. What is the genotype of an individual that is homozygous dominant for the trait?

Correct A. AA

B. Aa

C. aa

D. Ab

Correct Answer: A

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

Question 20

The diagram below shows the structure of a plant cell. Which part of the plant cell is responsible for photosynthesis?

Correct A. Chloroplast

B. Vacuole

C. Cell wall

D. Cytoplasm

Correct Answer: A

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

Question 21

In a eukaryotic cell undergoing mitosis, what is the primary function of the centrioles during prophase?

Correct A. To form the spindle fibers

B. To replicate the DNA

C. To condense the chromatin

D. To form the nuclear envelope

Correct Answer: A

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

Question 22

A 25-year-old male patient presents with a 2-year history of progressive weakness and fatigue. His hemoglobin level is 8.5 g/dL. Which of the following is the most likely diagnosis?

Correct A. Iron deficiency anemia

B. Thalassemia major

C. Sickle cell disease

D. Beta-thalassemia minor

Correct Answer: A

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

Question 23

A 35-year-old female patient undergoes a liver transplant. Which of the following is the primary function of the Kupffer cells in the liver?

A. To filter the blood

B. To store glycogen

C. To synthesize bile

Correct D. To remove bacteria and debris

Correct Answer: D

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

Question 24

A 28-year-old male patient presents with a 3-year history of progressive hearing loss. His audiogram shows a flat bone conduction threshold. Which of the following is the most likely diagnosis?

Correct A. Otosclerosis

B. Meniere's disease

C. Acoustic neuroma

D. Presbycusis

Correct Answer: A

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

Question 25

A 40-year-old female patient undergoes a mastectomy. Which of the following is the primary function of the axillary lymph nodes in the breast?

Correct A. To filter the lymph

B. To store fat

C. To synthesize hormones

D. To remove bacteria and debris

Correct Answer: A

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

POST UTME AL-HIKMAH UNIVERSITY 2020 Biology | Objective

Master the Exam!

Help others prepare! Share this practice hub: