POST UTME EKSU 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A genetic disorder is caused by a mutation in a gene that codes for a protein involved in DNA repair. Which type of mutation is most likely responsible for this disorder?
A. Point mutation
B. Frameshift mutation
C. Deletion mutation
D. Insertion mutation
Question 2
A diagram of a human brain is shown below. If the brain is injured, which of the following structures will be affected?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal cord
Question 3
A 40-year-old female patient presents with a 5-year history of progressive memory loss and confusion. On examination, she has a wide-based gait and a t\endency to fall. What is the most likely diagnosis?
A. Alzheimer's Disease (AD)
B. Frontotemporal Dementia (FTD)
C. Vascular Dementia (VaD)
D. Lewy Body Dementia (LBD)
Question 4
The rate of photosynthesis in a plant is affected by
A. Light intensity
B. Temperature
C. Water availability
D. All of the above
Question 5
The process by which microorganisms produce antibiotics is called
A. Biosynthesis
B. Fermentation
C. Metabolism
D. Antibiosis
Question 6
In the context of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP through substrate-level phosphorylation
B. To produce NADH and FADH2 as byproducts of glycolysis
C. To pump protons across the mitochondrial membrane, creating a proton gradient
D. To reduce oxygen to water
Question 7
In the process of respiration, what is the primary function of the mitochondria?
A. Production of ATP through cellular respiration
B. Breakdown of glu\cose to produce energy
C. Storage of energy in the form of glycogen
D. Transport of oxygen to the cells
Question 8
In the context of transport systems, which of the following is a function of the xylem in plants?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Transport of waste products from leaves to roots
D. Transport of hormones from roots to leaves
Question 9
In the context of classification of living things, which of the following kingdoms is characterized by the presence of flagella?
A. Fungi
B. Animalia
C. Plantae
D. Protista
Question 10
In the process of photosynthesis, what is the primary function of the chloroplasts?
A. Production of ATP through light-dep\endent reactions
B. Production of glu\cose through light-indep\endent reactions
C. Storage of energy in the form of starch
D. Transport of water to the leaves
Question 11
In the context of excretion and osmoregulation, which of the following organs is responsible for the regulation of water and electrolyte balance in the body?
A. Kidneys
B. Liver
C. Pancreas
D. Adrenal glands
Question 12
In the process of respiration, what is the byproduct of the breakdown of glu\cose in the absence of oxygen?
A. Carbon dioxide and water
B. Glu\cose and oxygen
C. Lactic acid and ethanol
D. ATP and NADH
Question 13
In the process of osmoregulation, what is the primary function of the kidneys in a hypertonic environment?
A. To excrete excess water
B. To reabsorb excess ions
C. To regulate blood pressure
D. To maintain acid-base balance
Question 14
A diagram of the human brain is shown below. Identify the part labeled A.
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Frontal lobe
Question 15
In the xylem, what is the primary function of the tracheids?
A. Transport of water and minerals from the roots to the leaves
B. Production of sugars through photosynthesis
C. Absorption of nutrients from the soil
D. Storage of water and nutrients in the stems

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