Flashcards in Science Chapter 3 Deck (43)
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passive transport:
movement of molecules w/o energy input
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osmosis:
passive transport of water via diffusion
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active transport:
protein binds to a particle and uses energy to move through the cell membrane
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equilibrium:
when molecules in a substance are spread evenly
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producer:
something that makes it's own food
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enzymes:
speeds up chemical reactions
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exocytosis:
when vesicles release their contents
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metabolism:
all the activity that occurs in the interior of an organism
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diffusion:
movement of molecules to where less molecules are
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consumer:
an organism that can't make it's own food
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organic compound:
containing carbon and hydrogen
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fermentation:
releasing energy w/o oxygen w/ glucose
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inorganic compound:
elements other than carbon and hydrogen
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endocytosis:
taking substances into a cell and surrounding it
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mixture:
is a blend of two or more substance , each of which retains its identity
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compound:
substance made up of two or more elements which are chemically combined
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matter:
has mass and takes up space
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energy:
the ability to cause change
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matter is made of:
atoms
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elements have kind of atom
one
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molecular compound ->
molecule
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ions:
electrically charged atoms, positive or negative
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ions of _____ charges attract one another neutral compounds
opposite
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carbon:
supply energy for cell process
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lipids:
store and release energy
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most living things use ____ to transport materials
water
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cells have a selectively ______ membrane what regulates what goes in/out of our cell
permeable
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plants use _____ _____ to convert it into energy/sugars (food)
light energy
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cellular respiration:
when chemical reactions break down food molecules into simpler substances and release stored energy
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