POST UTME GREENFIELD UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a photosynthetic pathway, the light-dep\endent reactions occur in the
A. Thylakoid membrane
B. Stroma
C. Chloroplast envelope
D. Mitochondrial matrix
Question 2
A plant hormone that promotes cell elongation is
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 3
In a plant's xylem, what is the primary function of the tracheids?
A. To transport water and minerals from the roots to the leaves
B. To transport sugars and other organic compounds from the leaves to the roots
C. To provide structural support to the plant
D. To regulate the plant's water potential
Question 4
A diagram of the human respiratory system is shown below. If the diagram is labeled as follows: A) Trachea, B) Bronchi, C) Alveoli, D) Diaphragm, what is the correct sequence of air flow from the nose to the lungs?
A. Nose → Trachea → Bronchi → Alveoli
B. Nose → Bronchi → Trachea → Alveoli
C. Nose → Alveoli → Bronchi → Trachea
D. Nose → Diaphragm → Trachea → Bronchi
Question 5
A researcher is studying the effect of temperature on the growth of a certain type of plant. The graph below shows the relationship between temperature and plant growth.
A. The plant grows best at a temperature of 20°C.
B. The plant grows best at a temperature of 25°C.
C. The plant grows best at a temperature of 30°C.
D. The plant grows best at a temperature of 35°C.
Question 6
A 50-year-old woman has a family history of breast cancer. Her mother and sister both had breast cancer at the age of 40. What is the probability that she will develop breast cancer by the age of 50?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 7
Asexual reproduction in plants can occur through the production of
A. Seeds
B. Spores
C. Buds
D. Runners
Question 8
A 2.0 L flask contains 1.0 mol of N2 gas at 25°C. If 1.0 mol of O2 gas is added, what is the total pressure of the mixture?
A. 1.0 atm
B. 2.0 atm
C. 3.0 atm
D. 4.0 atm
Question 9
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores. Which of the following is a characteristic of these herbivores?
A. They have a large body size
B. They have a specialized digestive system
C. They have a high metabolic rate
D. They have a long lifespan
Question 10
A genetic cross between two true-breeding lines of pea plants results in a 3:1 ratio of green seeds to yellow seeds. What is the genotype of the parents?
A. Bb x Bb
B. Bb x bb
C. BB x bb
D. Bb x BB
Question 11
A 2.5 L solution of 0.5 M NaCl is diluted to 5 L. What is the new concentration of NaCl?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 12
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the flower color. If 20% of the population are homozygous recessive, what is the frequency of the recessive allele?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 13
A 50 g sample of a mixture of NaCl and KCl is dissolved in 100 mL of water. If the mass of the solution is 150 g, what is the mass of KCl in the mixture?
A. 20 g
B. 30 g
C. 40 g
D. 50 g
Question 14
A diagram of a human respiratory system is shown below. Identify the part labeled 'B'?
A. Trachea
B. Lungs
C. Diaphragm
D. Bronchi
Question 15
In a population of E. coli bacteria, the average generation time is 30 minutes. If the population is initially 10^6, what is the population size after 4 hours?
A. 10^7
B. 10^8
C. 10^9
D. 10^10

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: