POST UTME UNIPORT 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The sense organ responsible for detecting changes in light intensity is the?
A. Eye
B. Ear
C. Nose
D. Mouth
Question 2
A person with normal vision can see objects clearly at a dis\tance of 25 cm. If the person's eye is 1.5 cm from the object, what is the magnification of the eye?
A. 1.5
B. 2.0
C. 2.5
D. 3.0
Question 3
What is the primary function of the lysosomes in eukaryotic cells?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis
D. Protein degradation
Question 4
The nervous system can be divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). Which of the following is a function of the PNS?
A. To regulate body temperature
B. To control voluntary movements
C. To transmit sensory information
D. To regulate heart rate
Question 5
In asexual reproduction, what is the primary mechanism of genetic variation?
A. Mutation
B. Genetic recombination
C. Gene duplication
D. Gene deletion
Question 6
A diagram of the human circulatory system is shown below. What is the function of the pulmonary valve?
A. To regulate blood flow from the heart to the lungs
B. To regulate blood flow from the lungs to the heart
C. To regulate blood flow from the heart to the aorta
D. To regulate blood flow from the aorta to the heart
Question 7
A 50-year-old man has a family history of breast cancer. His mother and sister both developed breast cancer at ages 40 and 45, respectively. What is the probability that he will develop breast cancer by age 60?
A. 0.05
B. 0.10
C. 0.20
D. 0.30
Question 8
What is the process by which plants transport water and minerals from the roots to the leaves?
A. Transpiration
B. Translocation
C. Respiration
D. Photosynthesis
Question 9
A 1.0 L flask contains 0.5 mol of an ideal gas at 27°C. Calculate the volume of the gas at 37°C u\sing Charles' Law.
A. 1.2 L
B. 1.5 L
C. 1.8 L
D. 2.1 L
Question 10
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is NOT a factor that can lead to a change in allele frequencies in a population?
A. Genetic drift
B. Mutation
C. Gene flow
D. Natural selection
Question 11
The process of cellular respiration involves the breakdown of glu\cose to produce energy. Which of the following is a byproduct of this process?
A. Carbon dioxide
B. Water
C. Oxygen
D. All of the above
Question 12
A diagram of the human heart is shown below. Which part of the heart is responsible for pumping blood to the lungs?
A. Left Ventricle
B. Right Ventricle
C. Pulmonary Valve
D. Tricuspid Valve
Question 13
The human eye has a lens that changes shape to focus on objects at different dis\tances. What is the name of this process?
A. Accommodation
B. Convergence
C. Divergence
D. Focu\sing
Question 14
What is the primary function of the mitochondria in eukaryotic cells?
A. Protein synthesis
B. Cell signaling
C. Energy production
D. Lipid synthesis
Question 15
In a process of photosynthesis, which of the following is the final product of the light-dep\endent reactions?
A. ATP
B. NADPH
C. O2
D. H2O

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