POST UTME OAU 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A certain species of bacteria has a generation time of 2 hours. If the initial population is 1000 cells, how many cells will be present after 5 generations?
A. 1000
B. 160000
C. 320000
D. 640000
Question 2
A diagram of a human eye is shown below. Identify the part labeled 'Y'.
A. A
B. B
C. C
D. D
Question 3
The diagram below shows a simple circuit with a battery, a resistor, and a light bulb. Identify the part labeled 'B'.
A. Battery
B. Resistor
C. Light Bulb
D. Wires
Question 4
The diagram below shows the structure of a plant cell. Identify the part labeled 'A'.
A. Cell Wall
B. Cytoplasm
C. Nucleus
D. Vacuole
Question 5
A diagram of a human kidney is shown below. Identify the structure labeled 'A'.
A. renal_pelvis
B. renal_artery
C. renal_vein
D. renal_cortex
Question 6
The theory of evolution by natural selection proposes that species adapt to their environments through the process of variation, mutation, and genetic drift. Which of the following is an example of a genetic adaptation that has occurred in response to environmental pressures?
A. The development of antibiotic resis\tance in bacteria
B. The evolution of the peppered moth in response to industrial pollution
C. The adaptation of the polar bear to a diet of seals and fish
D. The development of the human immune system
Question 7
The process of mitosis in eukaryotic cells is divided into several stages. Which of the following stages is characterized by the condensation of chromatin and the formation of the nuclear envelope?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 8
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
A. To focus light on the retina
B. To detect movement
C. To regulate pupil size
D. To produce tears
Question 9
The human body is composed of various systems, including the circulatory, respiratory, and nervous systems. Which of the following is a function of the
A. Circulatory System
B. Respiratory System
C. Nervous System
D. Digestive System
Question 10
A 30-year-old woman presents with primary amenorrhea. Her karyotype is 46,XX. What is the most likely cause of her condition?
A. Turner syndrome
B. Androgen insensitivity syndrome
C. Mayer-Roki\tansky-Küster-Hauser syndrome
D. Kallmann syndrome
Question 11
A diagram of a human heart is shown below. Identify the structure labeled 'B'.
A. pulmonary_vein
B. aorta
C. pulmonary_artery
D. coronary_artery
Question 12
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the
A. Spindle fibers
B. Centrioles
C. Telophase
D. Prophase
Question 13
A certain species of plant has a photosynthetic rate of 10 mg CO2/hour. If the plant is exposed to light for 8 hours, how much CO2 will be fixed?
A. 40
B. 60
C. 80
D. 100
Question 14
In a population of E. coli, the average generation time is 20 minutes. If the population is doubling every 30 minutes, what is the growth rate cons\tant (r) in units of 1/min?
A. 0.023
B. 0.025
C. 0.027
D. 0.029
Question 15
The human eye has a complex system of sense organs that work together to detect light and transmit visual information to the brain. Which of the following sense organs is responsible for detecting movement and changes in visual stimuli?
A. Rods
B. Cones
C. Bipolar Cells
D. Ganglion Cells

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