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WAEC Biology – Nigeria

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Question 261

Which organ is primarily responsible for excretion of nitrogenous wastes in humans?
Excretion and osmoregulationExcretion and osmoregulationeasy

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Question 262

In human genetics, what does a heterozygous genotype mean?
Heredity and geneticsHeredity and geneticsmedium

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Question 263

Which ecological term describes the role and position a species has in its environment?
EcologyEcologymedium

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Question 264

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

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Question 265

What process allows movement of molecules from an area of lower concentration to higher concentration through a membrane, requiring energy?
Cell activities and transportCell activities and transportmedium

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Question 266

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

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Question 267

What level of biological organization is correctly ordered from simplest to more complex?
Levels of organizationLevels of organizationmedium

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Question 268

Which process breaks down glucose to release energy in the absence of oxygen?
NutritionNutritionmedium

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Question 269

Which structure in the human kidney is mainly responsible for filtering blood?
Excretion and osmoregulationExcretion and osmoregulationmedium

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Question 270

Which evolutionary mechanism results in the increase of traits that enhance survival and reproduction?
Variation and evolutionVariation and evolutionhard

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