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9wt3
studystack of scienceness
| Question | Answer |
|---|---|
| Why do birds fly south? | they are responding to their enviroment |
| group of one type of organisms in the same place | population |
| the nucleus is made of | protons and neutrons |
| two or more elements in definate proportions | compound |
| releases energy from glucose?captures energy to make glucose? | cellular respiration; photosynthesis |
| the three particles that make up an atom | protons, neutrons, and elecrons |
| isotopes with same # of protons and different # of | neutrons |
| water molecules oxygen end slightly?hydrogen end? | negative; positive |
| amino acid is to proteins; simple sugar is to | starch |
| a monosaccharide is a | carbohydrate |
| Which molecule is a main source of energy? | ATP |
| cellular respiration occurs in | plant and animal cells |
| the main functions of proteins | build muscles and bone structure; help fight disease; control rate of reaction |
| genetically identical trees are a result of | asexual reproduction |
| which substances act as chemical messengers | hormones |
| channels and pumps in membranes are made of | proteins |
| diffusion occurs because | molecules keep bumping into each other |
| structures in cell movement | microtibules and microfilaments |
| who named cells | Robert Hooke |
| what organelle makes proteins | ribosomes |
| uses energy to move low to high concentration | active transport |
| what happens when concentration stays the same | molecules move back and forth in both directions |
| cell is eating substance | endocytosis |
| converts chemical energy into compounds more convenient | mitochondria |
| breaks down organisms no longer useful | lysosomes |
| paths the proteins | ribosomes, ER, and golgi body |
| what device allowed discovery of cells | microscope |
| Na+ ions enter cells by | binding and passing pumps |
| red blood cell placed in hypotonic enviroment | cell expands or bursts |
| facilitated diffusion used to transport | materials not soluble in lipids |
| the vaculoe of a paramecium should be active in a | hypotonic soulution |
| pinocytosis involves the transport of | fluids into a cell |
| another term for technology | applied science |
| when disigning an experiment, the first step is to | state the problem |
| a graph showing temperature over time, temperature is | independant variable |
| a rule or principle that describes what happens in nature is the | scientific law |
| gathering of information through the senses is called | observation |
| a factor that changes because of the independant variable is the | dependant variable |
Created by:
jbishop3
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