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NECTA Biology – Tanzania

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Question 271

What is the main function of the alveoli in the human respiratory system?
Human physiologyRespiratory systemmedium

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Question 272

In an ecosystem, what term describes the role and position of an organism within its environment?
EcologyEcosystems and their componentseasy

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Question 273

Which of the following best explains why photosynthesis is considered an endothermic reaction?
Respiration and photosynthesisPhotosynthesis processhard

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Question 274

What is the primary function of mitochondria in a eukaryotic cell?
Cell biologyCell structure and functioneasy

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Question 275

Which process in plants converts carbon dioxide and water into glucose and oxygen using sunlight?
Respiration and photosynthesisPhotosynthesiseasy

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Question 276

What is the genotype ratio of the offspring when two heterozygous individuals (Aa) for a single gene are crossed?
GeneticsPatterns of inheritancemedium

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Question 277

Which blood vessels carry oxygenated blood away from the heart to the body?
Human physiologyCirculatory systemeasy

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Question 278

Which hormone regulates the water balance in the human body by controlling the amount of water reabsorbed by the kidneys?
Human physiologyExcretory systemmedium

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Question 279

Which of the following best explains the role of decomposers in an ecosystem?
EcologyEnergy flow in ecosystemshard

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Question 280

Which structure in plants is primarily responsible for water transport?
Nutrition and transportTransport in plantseasy

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