Cell wall
Explication
Plant cells have extra structures including a cell wall, chloroplasts, and a vacuole. Animal cells also have a cell membrane, cytoplasm, and a nucleus, so those are not plant-only.
Glucose + oxygen → carbon dioxide + water + energy
Explication
Cell respiration breaks down glucose using oxygen to release energy, producing carbon dioxide and water. The other options describe photosynthesis or incorrect reactants and products.
Absorbs sunlight to power the reaction
Explication
Chlorophyll is the pigment that absorbs sunlight for photosynthesis. It does not store glucose, release oxygen into the soil, or transport water.
It has no fixed shape or fixed volume
Explication
Gases do not have a fixed shape or a fixed volume. Solids have fixed shape, and liquids have fixed volume, so those options are incorrect.
10
Explication
Alkalis have pH values above 7. A pH of 7 is neutral, while values below 7 are acidic.
speed = distance ÷ time
Explication
Speed is calculated by dividing distance by time. The other formulas mix in unrelated quantities or reverse the correct relationship.
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Animal cell — key features?
Nucleus, cytoplasm, membrane, mitochondria.
Plant cell — extra structures?
Cell wall, chloroplasts, vacuole.
Mitochondria — role?
Releases energy during respiration.
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