Biology Year 9 full revision

5. Tiny, finger-like projections in the small intestine that increase surface area for absorption.
6. A term describing a plant cell that is swollen and firm due to water uptake.
7. The simple sugar produced during photosynthesis and used in respiration.
9. The movement of water molecules across a partially permeable membrane.
11. The powerhouse of the cell where aerobic respiration occurs.
14. The smallest type of blood vessel where gas and nutrient exchange happens with tissues.
16. A biological catalyst that speeds up chemical reactions without being used up.
17. The digestive enzyme that breaks down starch into maltose.
19. The vascular tissue responsible for transporting sucrose and amino acids around a plant.
20. A large sheet of muscle separating the thorax from the abdomen, crucial for breathing.

1. Tiny air sacs in the lungs where gas exchange takes place.
2. The wave-like muscular contractions that push food through the alimentasi canal.
3. A liquid produced by the liver that neutralizes stomach acid and emulsifies fats.
4. Tiny pores on the underside of a leaf that allow gas exchange.
8. The type of acid produced in muscles during anaerobic respiration.
10. A specialized structure within a cell that performs a specific function.
12. The net movement of particles from a high concentration to a low concentration.
13. The vessels that transport water and mineral ions upwards from the roots.
15. The upper layer of mesophyll cells packed with chloroplasts for maximum light absorption.
18. The plant cell structure where photosynthesis takes place.