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Life Processes
Mahopac High School
| Question | Answer |
|---|---|
| Nutrition | When living things take materials from its external environment and change them into forms it can use. |
| Transport | The process by which substances enter and leave cells and become distributed within the cells. |
| Respiration | The process by which chemical energy stored in nutrients is released. Oxygen is required for chemical reactions. |
| Synthesis and Assimilation | The process of combining simple substances to form more complex substances. When complex substances form through synthesis it is incorporated into the body. |
| Growth | The process by which living things increase in size. |
| Excretion | The removal of metabolic waste. |
| Regulation | All activities that help a living thing. |
| Reproduction | A biological process by which new "offspring" are produced from their "parents". |
| What is needed to survive? | Nutrition, respiration, water, stable body temperature, appropriate atmospheric pressure |
| Homeostasis | Maintenance of a stable internal environment |
| What happens when blood sugar levels rise after eating? | Insulin is secreted so that excess glucose can be stored in the liver. |
| What happens when blood sugar levels fall? | Glucagon is secreted so that glycogen is broken down into glucose. |
| What are some examples of homeostasis? | Opening and closing of stomata in plant cells, body temperature, blood glucose, pulse rate |
| Receptor | Responds to changes in the environment |
| Effector | Provides a means for response to the stimulus |
| Organism | Any living thing |
| Biotic factors | The living organism in the environment such as trees, birds, worms, etc. |
| Examples of biotic factors | Trees, fungi, bacteria |
| Abiotic factors | The non-living portions of the environment. |
| Examples of abiotic factors | Light, water, wind, soil, air, temperature, pH |
| Name all the requirements to be living. | High organized and contain many complex chemical substance, made up of one or more cells, use energy, have a definite form and a limited size, response to change in the environment, able to reproduce, can evolve over time |
| Scientific Method | Techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. |
| Hypothesis | A proposed explanation for a phenomenon often written in a statement. |
| Controlled experiment | A test of the effect of a single variable by changing it while keeping all other variables the same. |
| Manipulated variable | Factor in an experiment that the scientist purposely changes; also know as the independent variable. |
| Response variable | Factor in an experiment that a scientist wants to observe, which may change in response to the manipulated variable; also known as the dependent variable. |
| Constant | Factor in an experiment that a scientist purpose keeps the same; also known as the controlled variable. |
| Theory | A well-tested explanation that unifies a broad range of observations. |
| Law | A statement based on repeated experimental observation that describes some aspect of the world. |
Created by:
pacetej
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