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WAEC Biology – Sierra Leone

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Question 41

What is the main function of red blood cells in humans?
Cell specializationCell specializationeasy

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Question 42

Which sequence correctly represents the biological levels of organization from simplest to most complex?
Levels of organizationLevels of organizationmedium

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Question 43

Which nitrogenous waste is primarily excreted by mammals?
Excretion and osmoregulationExcretion and osmoregulationmedium

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Question 44

In human physiology, which gland produces insulin?
Coordination and responsivenessCoordination and responsivenesseasy

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Question 45

Which process results in the formation of gametes with half the number of chromosomes of the parent cell?
ReproductionReproductionmedium

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Question 46

Which evolutionary mechanism explains the increase in frequency of beneficial traits in a population over time?
Variation and evolutionVariation and evolutionhard

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Question 47

Which organelle is primarily responsible for producing energy in the form of ATP in a cell?
Cell structure and ultrastructureCell structure and ultrastructureeasy

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Question 48

Which process best describes the movement of water molecules from a region of high concentration to a region of low concentration through a semi-permeable membrane?
Cell activities and transportCell activities and transporteasy

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Question 49

During which phase of mitosis do chromosomes line up at the cell's equatorial plane?
Division of cellsDivision of cellsmedium

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Question 50

Which of the following is an example of cellular specialization?
Cell specializationCell specializationeasy

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