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9 Weeks 1 B
| Question | Answer |
|---|---|
| What is observation? | Process of gathering information about events or processes in a careful, orderly way. |
| What is the difference between observation and inference? | Observation is the process of gathering information about events and inference is the logical interpritation of an observation. |
| What is spontanious generation? | living things that can arise from other living things. |
| What is hypothesis? | Proposed scientific ecplanation for a set of observation. |
| What is an controlled experiment? | Whenever a hypothesis should be tested by an experiment in which only one variable is changed at a time. All variables must be kept the same. |
| What is scientific theory? | Well tested explanation that unifies a broad range of observation. |
| Sexual reproduction | two cells from different parents unite to produce the first cell of the new organism. |
| asexual reproduction | organism has a single parent |
| homeostasis | process by which organisms maintain a relatively stable internal enviorment. |
| what makes up an atom? | protons, neutrons, and electrons |
| what is a covalent bond? | electrons are shared between atoms |
| what it means that water molecules is polar? | because there is an uneven distribution of electrons between the oxygen and hydrogen atoms. |
| what is solution? | when ions gradually become dispersed in the water forming a type of mixture |
| consumers | organisms that rely on other organisms for their energy and food supply |
| producer | certain bacteria an capture energy from sunlight or chemicals and use that energy to produce food. |
| herbivores | obtain energy by eating only plants |
| omnivores | eat both plants and animals |
| autotrophs | certain bacteria that can capture energy from sunlight or chemicals and use that energy to produce food. also called producer |
| heterotrophs | organisms that rely on other organisms for their energy and food supply also called consumers |
| decomposers | breaks down organic matter like fungi and bacteria |
| detritvores | feed on plants and other dead animal remains or matter |
| food web | when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions |
| food chain | energy stored by producers can be passed through an ecosystem |
| rule of 10? | organisms use up about 10 % of this energy for life process |
| nitrogen fixation | bacteria that live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia |
| primary productivity | rate at which organic matter is created by producers |
| limiting nutrients | when an ecosystem is limited by a single nutrient that is scarce or cycles very slow |
| cell culture | group of cells grown in a nutrient solution from a single original cell |
| sunlight | main source of energy for life on earth |
Created by:
mary_gardner
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