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6. In plants, what are leaves examples of?
- Tissues
- Organs
- Organ systems
7. What is diffusion?
- The movement of particles from high concentration to low concentration
- The movement of particles from low concentration to high concentration
- Active movement of particles, requiring energy from respiration
8. What is an arthropod with six pairs of legs likely to be?
- a myriapoid
- a crustacean
- an insect
9. Which process needs carrier proteins in the cell membrane?
- Osmosis
- Active transport
- Diffusion
10. Which statement about protoctists is correct?
- Amoeba and Chlorella both have features like a plant cell
- Amoeba has features like an animal cell but Chlorella has features like a plant cell
- Amoeba has features like a plant cell but Chlorella has features like an animal cell
11. What problem does tobacco mosaic virus cause?
- Joining together of tobacco leaves to form a pattern
- Discolouring of tobacco plant leaves
- Changes to the leaves of other plants so they look like tobacco
12. Which statement about viruses is correct?
- They have a protein coat
- They can only reproduce inside animal cells
- They only contain RNA
13. What structure does a plant cell have but an animal cell does not have?
- A permanent vacuole
- A circular chromosome
- A cell membrane
14. In fungi, what is the cell wall made from?
- Chitin
- Cellulose
- Glycogen
15. What do animals, fungi and viruses have in common?
- They do not have cell walls
- They cannot carry out photosynthesis
- They consist of cells
16. What is a function of the vacuole in a plant cell?
- It is where most of the chemical reactions in the cell happen
- To keep the cell turgid
- To store chlorophyll for photosynthesis