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WAEC Biology – Sierra Leone

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Question 241

Which process in plants converts glucose into usable energy in the presence of oxygen?
Photosynthesis and respirationPhotosynthesis and respirationeasy

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Question 242

In genetics, what term describes the physical expression of a gene?
Heredity and geneticsHeredity and geneticseasy

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Question 243

Which of the following mechanisms contributes directly to natural selection?
Variation and evolutionVariation and evolutionhard

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Question 244

Which organelle is responsible for producing ATP through cellular respiration in eukaryotic cells?
Cell structure and ultrastructureCell structure and ultrastructureeasy

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Question 245

Which plant tissue is specialized for the transport of water from roots to leaves?
Cell specializationCell specializationeasy

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Question 246

Which level of biological organization correctly represents increasing complexity?
Levels of organizationLevels of organizationmedium

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Question 247

Which nutrient is primarily broken down in the small intestine during human digestion?
NutritionNutritioneasy

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Question 248

Which hormone regulates water reabsorption in the kidneys to maintain osmoregulation in humans?
Excretion and osmoregulationExcretion and osmoregulationmedium

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Question 249

In an ecosystem, energy flow is unidirectional because:
Energy flow and cyclesEnergy flow and cycleshard

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Question 250

Which process describes the movement of water molecules from an area of high concentration to low concentration across a selectively permeable membrane?
Cell activities and transportCell activities and transporteasy

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