Across
- 2. - An organelle that contains cell sap (a weak solution of sugar and salts).
- 3. - An oxygen-carrying protein found in red blood cells.
- 8. - The clumping together of cells.
- 9. - A section of DNA within a gene that codes for amino acids.
- 13. - The ability to respond quickly to an infection.
- 14. - A group of different tissues that work together to perform a particular function.
- 16. - A small organelle that makes proteins.
- 17. - The variety of living organisms in an area.
- 20. - A method where cell components are separated out using a centrifuge.
Down
- 1. - A lipid containing one molecule of glycerol attached to two fatty acids and a phosphate group. Main component of the cell membrane.
- 4. - Repels water.
- 5. - The complete set of genes in a cell.
- 6. - How much bigger an image from a microscope is compared to the specimen.
- 7. - A carbohydrate molecule made up of two polysaccharides - amylose and amylopectin.
- 10. - The monomer that makes up polynucleotides - consists of a pentose sugar, a phosphate group and a nitrogenous organic base.
- 11. - A strong fibre formed by chains of cellulose linked together by hydrogen bonds.
- 12. - The protein coat surrounding a virus' genetic material.
- 15. - A harmful molecule. Released by some pathogens.
- 18. - A protein that speeds up the rate of chemical reactions.
- 19. - A pore on the surface of an insect.