| A | B |
|---|
| pathogen | an organism that invades the body causing disease |
| pH | a measure of whether a substance is acidic(>7), neutral(7), or basic(<7) |
| photosynthesis | the process by plants of capturing light energy and using it to make food from carbon dioxide and water |
| respiration | the process where the chemical bond energy that is stored in nutrients is released for use in cells |
| stimuli | any changes in the environment that causes an organism to react |
| synthesis | a life process that involves combining simple substances into more complex substances |
| vaccine | a substance made of weakened, killed, or partial pathogens and designed to protect the body from future invasions of that pathogen |
| virus | a nonliving particle of protein and genetic material that reproduces by invading the cell of a living organism |
