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WAEC Biology – Sierra Leone

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Question 141

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

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Question 142

In photosynthesis, the primary function of chlorophyll is to:
Photosynthesis and respirationPhotosynthesis and respirationeasy

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Question 143

Which process is responsible for the removal of metabolic waste products from the blood?
Excretion and osmoregulationExcretion and osmoregulationeasy

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Question 144

Which hormone regulates the sleep-wake cycle in humans?
Coordination and responsivenessCoordination and responsivenessmedium

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Question 145

In sexual reproduction, the fusion of two haploid gametes produces a:
ReproductionReproductionmedium

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Question 146

Which mechanism best explains how natural selection leads to evolution?
Adaptation and natural selectionAdaptation and natural selectionhard

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Question 147

During osmosis, water moves across a semi-permeable membrane from a region of:
Cell activities and transportCell activities and transporteasy

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Question 148

Which phase of mitosis is characterized by the alignment of chromosomes along the metaphase plate?
Division of cellsDivision of cellsmedium

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Question 149

Which cell type in animals is specialized for transmitting nerve impulses?
Cell specializationCell specializationeasy

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Question 150

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

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