Cell Biology

3. a structure that provides support for the cell.
4. an enzyme on the head of a sperm cell that digests the egg cell membrane.
6. green pigment in a plant.
9. A structure that allows substances in and out of a cell.
11. an organelle in a sperm cell that releases energy for its movement.
12. a cell in the blood that protects the body by engulfing pathogens and created antibodies.
13. A cell with a specific function.
14. a muscle tissue that contracts and relaxes pump blood around the body.
15. a muscle tissue that joins bones to allow movement.

1. an organelle that absorbs light for photosynthesis.
2. a (dead) cell that transports water and minerals from the roots to other parts of the plant.
5. a (live) cell that transports sugars from the leaves to other parts of the plant.
7. a red protein in a red blood cell that binds to oxygen.
8. .............. layers on the axon of a nerve cell allow fast signal transmission.
10. diffusion is the movement of particles from an area of ............ concentration to an area of low concentration.
13. A cell that is not specialised - all cells begin as this.