Biology Vocabulary

3. a compound that releases a proton
7. A jellylike fluid inside the cell in which the organelles are suspended
10. a substance made of atoms of different elements bonded together in a certain ratio
11. a mixture of substances that is the same through-out; a homogeneous mixture
14. all of the chemical processes that build up or break down materials
16. the maintenance of constant internal conditions in an organism
17. the division of the cell nucleus and its contents
18. the change in living things over time
19. one particular type of atom that cannot be broken down into a simpler substance by ordinary chemical means

1. a substance that decreases the activation energy needed to start a chemical reaction. Speeds up a reaction
2. infectious particle made of a strand of DNA or RNA surrounded by a protein coat
4. the substances made by a chemical reaction. On the right side of equation
5. catalysts for chemical reactions in living things.
6. The powerhouse of the cell. Creates ATP by using chemical energy and oxygen.
8. any individual living thing
9. tool that provides an enlarged image of an object
12. all organisms and the part of Earth where they exist
13. the substances changed during a chemical reaction. On left side of equation
15. the smallest basic unit of matter
17. form of nuclear division that divides a diploid cell into a haploid cell; important in forming gametes for sexual reproduction.