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Biology chap 6 and 7
bio
12
Biology
9th Grade
01/18/2007

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Cards

Term
True or false? compounds have the same properties as their individual exponents
Definition
false
Term
why does whater have high surface tension?
Definition
it is a polar molecule
Term
which of the following pairs is unrelated?
sugar-carb
fat-lipid
starch-nucleic acid
Definition
starch-nucleic acid
Term
what are lipids composed of?
Definition
carbon, oxygen, and hydrogen
Term
all of the chemical reactions in an org are called
Definition
metabolism
Term
what do protiens not dou?
store energy
provide immunity
contract muscle tissues
regulate other protiens
Definition
store energy
Term
what does an enzyme do to a chemical reaction?
Definition
speed it up
Term
what is unrelated?
chloroplast-chlorophyll
cell wall- cellulose
flagella-chromatin
nucleaus-Dna
Definition
flagella- chromatin
Term
what term describes the fact that somethings can cross and some cant' cross a membrane
Definition
selectively permeable
Term
describe a phospholipid bilayer
Definition
it is a membrane that has polar phospate heads on the inside of the cell, and outside of the cell. On the inner part of the membrane, fatty lipid tails are seperated by cholesterol and make teh bilayer stable while teh polar phosphate heads can touch the water but the lipids cant
Term
True or false? ribosomes are double membraned.
Definition
false
Term
tell 3 ways that cells use lipids
Definition
insulation
energy storage
protective coatings
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