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1st Semester Final
| Term | Definition |
|---|---|
| hypothesis | possible answer to a question |
| independent | variable that is changed |
| archaebacteria | prokaryote that can live in harsh environments |
| cell wall | helps maintain shape of plant cell |
| nucleus | controls all the cell's activities |
| cell membrane | regulates what goes in and out of the cell |
| chlorophyll | makes food for the plant |
| eukaryote | most are multicellular; has a nucleus |
| metaphase | stage when homologous chromosomes like up in the middle |
| interphase | stage when chromosomes are copied |
| chromosomes | part of cell that contains heredity material |
| villi | increases surface area of small intestines |
| peristalsis | squeezing action that moves food through |
| pepsin | breaks down protein in the stomach |
| liver | makes bile |
| pancreas | regulates blood sugar |
| bacteria | killed by antibiotic |
| vaccines | prevent but do not cure diseases |
| cellular respiration | chemical reactions that involve releasing energy from food |
| alveoli | increase surface area of lungs and do gas exchange |
| artery | takes blood away from heart |
| vein | takes blood to the heart |
| white blood cells | fight disease |
| neuron | nerve cell |
| cerebrum | stores memories in the brain |
| cerebellum | controls balance |
| medulla | control involuntary processes |
| glands | groups of cells that make special chemicals |
| hormones | special chemicals made by glands |
| homeostasis | maintains stable internal environment |
| tendons | connect muscle to bone |
| epidermis | thin, top layer of skin |
| ovules become | seeds |
| ovary becomes | fruit |
| placenta | provides embryo with oxygen and nutrients |
| meiosis | makes sex cells |
| mitosis | makes body cells |
| gametes | another word for sex cells |