B2.3 Cell specialization

2. Something in the kidney to increase surface area
4. Thin layer of cells that lines the alveoli in the lungs, facilitating gas exchange.
6. The female reproductive organ where egg cells are produced.
8. mitochondria’s inner membrane is folded into...
10. We have lots of cells
11. A type of cell that can only differentiate into one type of cell lineage.
13. The adaptation of the sperm cell that helps it swim towards the egg.
15. Gene expression depends on what gradient?
17. A structure found in cardiac muscle cells that allows rapid transmission of electrical impulses.
18. Striated muscle cells are unbranched or branched

1. Shape of red blood cells
3. These cells protect the body from pathogens and foreign substances.
5. Fertilisation of a sperm and egg becomes...
7. This type of cell is specialized for transmitting signals throughout the body.
9. The organelle in the sperm cell that provides energy for movement.
12. The process by which unspecialized cells become specialized cells.
14. Sperm cells have mitochondria to produce atp for?
16. the fluid secreted by type II pneumocytes.