Combined Science — Biology Flashcards
6 cards from real O-LEVEL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Combined Science — Biology flashcards as text
What type of reproduction requires only one parent and produces genetically identical offspring?
Answer: Asexual reproduction
Asexual reproduction involves only one parent and produces offspring that are genetically identical (clones) to the parent.
What is the role of the pancreas in digestion?
Answer: Produces digestive enzymes
The pancreas produces digestive enzymes (amylase, lipase, protease) that are released into the small intestine to break down food.
Which gas do plants absorb from the air for photosynthesis?
Answer: Carbon dioxide
Plants absorb carbon dioxide (CO₂) from the air through their stomata and use it as a raw material for photosynthesis.
What is natural selection?
Answer: Organisms with favourable traits surviving and reproducing more successfully
Natural selection is the process by which organisms with advantageous traits are more likely to survive, reproduce, and pass on those traits to offspring.
Which structure controls what enters and leaves the cell?
Answer: Cell membrane
The cell membrane (plasma membrane) is selectively permeable, controlling the movement of substances into and out of the cell.
What is the medical term for a condition where arteries are blocked by fatty deposits?
Answer: Atherosclerosis
Atherosclerosis is the build-up of fatty plaques (atheroma) inside artery walls, narrowing them and restricting blood flow, increasing heart disease risk.
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- file.go.gov.sg — Retake policy · verified Nov 2026
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