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221Human Physiology
| Question | Answer |
|---|---|
| what is homeostasis? | the maintenance of a stable internal environment within an organism despite changes in the external environment. |
| what are three types of biomolecules? | carbohydrates, lipids, and proteins. |
| what are the phases of the cell cycle? | interphase(G1, S, G2), mitotic phase (mitosis, and cytokinesis) |
| what is an enzyme? | a biological catalyst typically a protein that speeds up the rate of a specific chemical reaction within a cell without being consumed in the process. |
| what are three functions of an enzyme? | catalysis, regulation, and signaling. |
| what are the four main issue types? | epithelial tissue, connective tissue, muscle tissue, and nervous tissue |
| define articulation? | a join, a point of connection between two or more bones. |
| name three generalized functions of skeletal muscle tissue? | movement, posture maintenance, and heat generation. |
| what is membrane potential? | the voltage difference across a cells plasma membrane, resulting from the unequal distribution of ions between the intracellular and extracellular environments. |
| what is the main function of cartilage? | to provide structural support, cushioning, and flexibility. |
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