POST UTME OAU 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
Which of the following types of coordination is primarily responsible for the regulation of body temperature?
A. Nervous system
B. Hormonal system
C. Endocrine system
D. Exocrine system
Question 2
The classification of living organisms into different kingdoms is based on their _______________ characteristics.
A. morpho\logical
B. physio\logical
C. biochemical
D. genetic
Question 3
In the context of gas exchange, what is the primary function of the alveolar-capillary membrane?
A. To regulate the pH of the blood
B. To facilitate the diffusion of oxygen into the blood
C. To remove carbon dioxide from the blood
D. To regulate the temperature of the blood
Question 4
The process of excretion in which the kidneys filter waste products from the blood and excrete them in the form of urine is called?
A. Ureteral Peristalsis
B. Renal Peristalsis
C. Nephron Function
D. Urine Formation
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. 0.36
B. 0.64
C. 0.48
D. 0.52
Question 6
In a photosynthetic pathway, which of the following pigments is primarily responsible for absorbing light energy in the blue-violet region of the visible spectrum?
A. Chlorophyll a
B. Chlorophyll b
C. Carotenoids
D. Phycobiliproteins
Question 7
Which of the following types of tissue is primarily responsible for the contraction of skeletal muscles?
A. Cardiac muscle
B. Smooth muscle
C. Striated muscle
D. Connective tissue
Question 8
A 2-year-old child is diagnosed with a rare genetic disorder that affects the development of the pancreas. Which of the following is a likely consequence of this disorder?
A. Diabetes mellitus
B. Pancreatitis
C. Pancreatic cancer
D. Pancreatic cysts
Question 9
A plant has a root system that is adapted to absorb water from a dry soil. Which of the following transport systems is responsible for this adaptation?
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 10
A 25-year-old female patient presents with symptoms of shortness of breath, fatigue, and palpitations. Her ECG shows a heart rate of 120 beats per minute. Which of the following is the most likely diagnosis?
A. Atrial Fibrillation
B. Ventricular Tachycardia
C. Supraventricular Tachycardia
D. Sinus Tachycardia
Question 11
The process by which an organism's genetic information is passed from one generation to the next is called _______________.
A. mutation
B. genetic drift
C. natural selection
D. heredity
Question 12
A 35-year-old woman is diagnosed with a rare form of cancer that affects the ovaries. Which of the following is a likely consequence of this cancer?
A. Infertility
B. Ovarian torsion
C. Ovarian cysts
D. Ovarian hyperstimulation syndrome
Question 13
A species of bird has a unique adaptation that allows it to survive in a desert environment. Which of the following evolutionary theories best explains this adaptation?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 14
The process of asexual reproduction in which an organism produces offspring that are genetically identical to itself is called?
A. Mitosis
B. Meiosis
C. Binary Fission
D. Budding
Question 15
A diagram of a human nervous system is shown below. What is the function of the part labeled 'D'?
A. processes sensory information
B. transmits signals to the muscles
C. regulates the body's autonomic functions
D. detects changes in the environment

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