All 15 questions from the Post-UTME Screening (Post-UTME) Biology 2009 Objective paper, with the correct answer and a full explanation for each. Free, no signup needed.
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From the following list of types of mutation, identify the one that is hereditary
Germinal (germline) mutations occur in reproductive cells and are passed on to offspring, making them hereditary.
Which of these would not be a limiting factor in photosynthesis?
Oxygen is a product of photosynthesis, not a limiting reactant; CO2, chlorophyll, and light all directly limit the rate.
In a cell, digestive enzymes mostly occur in
Lysosomes are the cell's digestive organelles, packed with hydrolytic enzymes.
Which of these is not a lipid?
Glycerol is a simple alcohol/building block of lipids (like triglycerides), not a lipid itself.
Phototropism is
Phototropism is a directional (unilateral) growth response toward a light source.
The site of protein synthesis in a cell is
Ribosomes are the sites of protein synthesis (translation).
On storage, the sweetness of corn is lost. This is because
Stored corn converts its sugars into starch (polysaccharide), reducing sweetness.
The eye worm is known as
Loa loa is commonly known as the African eye worm.
Which of these plants is not a pitcher plant?
Crotalaria is a legume genus, not a carnivorous pitcher plant.
One of these arthropods is a carrier of viruses and other micro-organisms
Fleas are well-known vectors of disease-causing organisms.
The highly developed cortex of the brain of man enables us to do the following except
Balance is primarily controlled by the cerebellum, not the cerebral cortex.
Lampbrush chromosome occurs in
Lampbrush chromosomes are a distinctive feature of oocytes during early meiotic development.
Insulin is secreted by the
Insulin is secreted by the pancreas (beta cells of the islets of Langerhans).
The principal energy storing molecule is
ATP is the cell's principal energy currency/storage molecule.
Each month the uterus lining thickens up in readiness to receive the fertilized egg. If the egg is not fertilized, the lining and some blood is lost through the vagina. This is
This describes the process of menstruation.
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