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Semester 1 SG
study guide for the mid-term exam
| Question | Answer |
|---|---|
| science | an organized way of gathering and analyzing evidence about the natural world |
| hypothesis | a scientific explanation for a set of observations that will be tested in ways that support or reject it |
| herbivores | organisms that feed on plants |
| carnivores | organisms that feed on animals |
| omnivores | organisms that feed on both plants and animals |
| scavengers | organisms that feed on dead organisms |
| immigration | moving from one place to another |
| emigration | leaving one place |
| deforestation | destruction of forests |
| products in cellular respiration | 6CO2, 6H2O, energy |
| reactants in cellular respiration | O2, C6, H12, O6 |
| food chain | a series of steps in which organisms transfer energy by eating and being eaten |
| food web | a network of complex interactions formed by food chains |
| pH scale | 1 to 6.9 = acid; 7 = water; 7.1 to 14 = base |
| beginning of the scientific method | observe your surroundings |
| theory | a collection of observations and well-tested hypotheses |
| metric units | used to measure especially when collecting data in an experiment |
| all living things | grow and develop, respond to their environment, reproduce, maintain their processes through homeostasis |
| adhesion | 1 molecule is attracted to a different molecule |
| amino acids | building blocks of proteins |
| simple sugars | building blocks of starches |
| functions of proteins | fight diseases, control reaction rates, and help move substances in and out of cells |
| macromolecules | polysaccharides = simple sugars; proteins = amino acids; nucleic acids = nucleotides; glycerol = fatty acids |
| reactants | what you put into the reaction; products are the result |
| catalysts | speeds up the rate of a reaction |
| enzymes | catalysts that work in the body |
| cell membrane | made up of bilipid layers |
| energy | a chain/web/pyramid that flows in 1 direction |
| nutrients | flow in multiple directions |
| biomass | a food pyramid that decreases at each level |
| biotic factors | organisms that are living or once living |
| abiotic factors | things that were never alive |
| exponential growth | rapid growth of a population |
| habitat fragmentation | sections of animals or plants living space is destroyed or partially destroyed |
| pollution | destroys our protective ozone layer |
| prokaryotic cells | cells that do not have a nucleus |
| eukaryotic cells | cells that do have a nucleus and nuclear membranes |
| scanning electron microscopes | microscopes that allow 3-D imaging |
| autotrophs | make their own food |
| heterotrophs | get food from other sources |
| chlorophyll | energized by sunlight |
| no carbon dioxide for plants | no glucose |
Created by:
Tyl3r10959
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