POST UTME EKSU 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a neuron is shown below. What is the primary function of the d\endrites in this neuron?
A. To transmit signals to other neurons
B. To receive signals from other neurons
C. To generate action potentials
D. To synthesize neurotransmitters
Question 2
A researcher is studying the effects of pH on protein structure. Which of the following statements best describes the relationship between pH and protein structure?
A. Protein structure is unaffected by pH
B. Protein structure changes with increa\sing pH
C. Protein structure changes with decrea\sing pH
D. Protein structure is denatured by pH
Question 3
A cell is undergoing mitosis. Which of the following stages is characterized by the condensation of chromatin and the formation of the spindle apparatus?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 4
According to the classification of living things, what is the primary characteristic that distinguishes between prokaryotes and eukaryotes?
A. Presence of a true nucleus
B. Presence of mitochondria
C. Presence of a cell wall
D. Presence of chloroplasts
Question 5
The process of cellular respiration involves the breakdown of glu\cose to produce ATP, which is then used to power the cell's various activities. Which of the following statements about the electron transport chain is FALSE?
A. The electron transport chain is the site of oxidative phosphorylation.
B. The electron transport chain is located in the mitochondria.
C. The electron transport chain is responsible for generating the proton gradient.
D. The electron transport chain is the site of substrate-level phosphorylation.
Question 6
A patient is experiencing respiratory distress due to a severe case of asthma. Which of the following medications would be most effective in relieving the symptoms?
A. Bronchodilators
B. Corti\costeroids
C. Antihistamines
D. Expectorants
Question 7
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?
A. Vacuole
B. Chloroplast
C. Mitochondria
D. Nucleus
Question 8
A plant has a genetic trait that is controlled by a \single gene with two alleles. The dominant allele 'A' codes for red flowers, while the recessive allele 'a' codes for white flowers. If a plant with red flowers is crossed with a plant with white flowers, what is the probability that the offspring will have red flowers?
A. 0.25
B. 0.50
C. 0.75
D. 0.90
Question 9
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 10
A diagram of the human respiratory system is shown below. What is the primary function of the alveoli?
A. Gas exchange
B. Air filtration
C. Humidity regulation
D. Temperature regulation
Question 11
In a typical sexual reproduction process, what is the primary function of the pollen tube in the female reproductive organ?
A. To provide nutrients to the developing embryo
B. To facilitate the fusion of gametes
C. To transport the sperm to the ovum
D. To stimulate ovulation
Question 12
A plant has a genetic trait that is controlled by a \single gene with two alleles. The dominant allele 'A' codes for tall plants, while the recessive allele 'a' codes for short plants. If a plant with tall plants is crossed with a plant with short plants, what is the probability that the offspring will have short plants?
A. 0.25
B. 0.50
C. 0.75
D. 0.90
Question 13
A diagram of a simple harmonic oscillator is shown below. What is the relationship between the amplitude and the frequency of this oscillator?
A. Amplitude is directly proportional to frequency
B. Amplitude is inversely proportional to frequency
C. Frequency is directly proportional to amplitude
D. Frequency is inversely proportional to amplitude
Question 14
A diagram of a bacterial cell is shown below. Which part of the cell is responsible for DNA replication?
A. Cell membrane
B. Cytoplasm
C. Nucleus
D. Ribosomes
Question 15
A patient is experiencing respiratory distress due to a severe case of pneumonia. Which of the following medications would be most effective in relieving the symptoms?
A. Antibiotics
B. Corti\costeroids
C. Antihistamines
D. Expectorants

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