Practice Post UTME GREENFIELD UNIVERSITY biology 2021 Past Questions

Question 1

A 2.5 L flask contains 0.5 M NaCl solution. If 0.1 M NaOH is added to the solution, what is the concentration of the resulting solution?

A. 0.4 M

B. 0.6 M

C. 0.8 M

D. 1.0 M

Question 2

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

A. Cornea

B. Iris

C. Retina

D. Lens

Question 3

The sense organ responsible for detecting sound waves is the ear. What is the primary function of the cochlea in this process?

A. To amplify sound waves

B. To convert sound waves to electrical signals

C. To detect sound waves

D. To regulate hearing

Question 4

The diagram below shows the structure of a human eye. Which of the following parts is responsible for detecting light?

A. Cornea

B. Iris

C. Retina

D. Lens

Question 5

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

C. 0.64

D. 0.84

Question 6

According to the classification of living things, what is the primary characteristic that distinguishes prokaryotes from eukaryotes?

A. Presence of a nucleus

B. Presence of mitochondria

C. Presence of a cell wall

D. Size of the cell

Question 7

In the context of classification of living things, which of the following kingdoms is characterized by the presence of cell walls made of chitin?

A. Animalia

B. Fungi

C. Protista

D. Monera

Question 8

A 5-year-old child is diagnosed with a rare genetic disorder that affects the production of a specific enzyme. Which of the following is a possible consequence of this disorder?

A. Increased risk of cancer

B. Impaired immune function

C. Developmental delays

D. Cardiovascular disease

Question 9

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. 0.36

B. 0.64

C. 0.16

D. 0.04

Question 10

A patient with a malfunctioning kidney is experiencing water retention. Which of the following organs will be affected by the malfunction?

A. Liver

B. Pancreas

C. Kidney

D. Heart

Question 11

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

A. 0.8

B. 0.6

C. 0.4

D. 0.2

Question 12

A researcher is studying the effects of climate change on a particular e\cosystem. The researcher collects data on the temperature, precipitation, and species composition of the e\cosystem over a period of 10 years. What type of data analysis would be most appropriate for this study?

A. Regression analysis

B. Time-series analysis

C. Cluster analysis

D. Principal component analysis

Question 13

A patient presents with symptoms of a bacterial infection, including fever, chills, and a productive cough. The patient's sputum sample is cultured, and the results show the presence of a gram-positive coccus. What is the most likely cause of this patient's symptoms?

A. Staphylococcus aureus

B. Streptococcus pneumoniae

C. Haemophilus influenzae

D. Pseudomonas aeruginosa

Question 14

The process of hormonal coordination in the human body involves the release of hormones from the hypothalamus, which then stimulate the release of other hormones from the pituitary gland. What is the primary function of the hypothalamus in this process?

A. To regulate body temperature

B. To stimulate the release of other hormones

C. To control appetite and thirst

D. To regulate sleep and wakefulness

Question 15

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

A. Vacuole

B. Chloroplast

C. Cell wall

D. Cytoplasm

POST UTME GREENFIELD UNIVERSITY 2021 Biology | Objective

Master the Exam!

Help others prepare! Share this practice hub: