POST UTME MOUNTAIN TOP UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of 1000 individuals has a mean height of 170 cm. If a sample of 50 individuals is randomly selected from the population, what is the s\tandard deviation of the sample mean?
A. 1.4
B. 2.1
C. 3.5
D. 5.6
Question 2
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for the synthesis of proteins?
A. Mitochondria
B. Chloroplast
C. Ribosome
D. Endoplasmic reticulum
Question 3
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is mediated by the action of which of the following proteins?
A. Histone deacetylase
B. Conden\sin
C. Separase
D. Topoisomerase
Question 4
A diagram of a plant cell is shown below. Identify the part labeled A.
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Vacuole
Question 5
A diagram of a plant cell is shown below. Identify the part labeled A.
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Vacuole
Question 6
The process of cellular respiration in cells involves the breakdown of glu\cose to produce energy, which is stored in the form of which of the following molecules?
A. ATP
B. NADH
C. FADH2
D. Pyruvate
Question 7
In a typical mammalian kidney, which of the following structures is primarily responsible for the reabsorption of glu\cose from the filtrate?
A. Proximal convoluted tubule
B. Distal convoluted tubule
C. Loop of Henle
D. Collecting duct
Question 8
The type of connective tissue that provides support and structure to the body is?
A. Bone
B. Cartilage
C. Ligament
D. T\endon
Question 9
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 180
B. 200
C. 220
D. 240
Question 10
A diagram of a human respiratory system is shown below. Identify the part labeled B.
A. Trachea
B. Lungs
C. Diaphragm
D. Bronchi
Question 11
In a population of 1000 individuals, 20% are homozygous dominant (BB), 40% are heterozygous (Bb), and 40% are homozygous recessive (bb). What is the probability that two individuals chosen at random will have offspring with the BB genotype?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 12
In the xylem transport system, what is the primary function of the tracheids?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and other organic compounds from leaves to roots
C. Support and structural function of the plant
D. Production of hormones and other signaling molecules
Question 13
The process of photosynthesis in plants involves the conversion of light energy into chemical energy, which is stored in the form of which of the following molecules?
A. ATP
B. NADPH
C. Glu\cose
D. Oxygen
Question 14
A researcher is studying the population dynamics of a species of rabbit. The population growth rate is modeled by the \logistic equation dP/dt = rP\( 1 - P/K \), where P is the population size, r is the intrinsic growth rate, and K is the carrying capacity. If the intrinsic growth rate is 0.5 and the carrying capacity is 1000, what is the population size at equilibrium?
A. 500
B. 750
C. 1000
D. 1250
Question 15
A 5.0-mL sample of a solution containing 0.2 M glu\cose is added to a 15.0-mL sample of a solution containing 0.1 M glu\cose. What is the resulting concentration of glu\cose in the mixture?
A. 0.05 M
B. 0.075 M
C. 0.1 M
D. 0.125 M

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