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Molecules of Cells
n/a
30
Biology
Undergraduate 1
09/13/2011

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Cards

Term
4 main categories of organic compounds important to living organisms
Definition
- carbohydrates
- lipids
- proteins
- nucleic acids
Term
carbohydrates are made up of what elements?
Definition
C2 H2 and O
Term
Examples of carbohydrates
Definition
- sugars
- starches
- cellulose
Term
monomer of carbs?
Definition
monosaccharide (i.e., glucose, fructose)
Term
lipids are made up of what elements?
Definition
C, H, and small amount of O, P, and/or N
Term
examples of lipids
Definition
- fats
- oils
- waxes
- sterols
Term
functions of lipids
Definition
- coating outer surfaces
- structure (cell membrane)
- energy storage
Term
T or F:

hydrophobia is NOT a common characteristic of lipids
Definition
FALSE
Term
examples of nucleic acids
Definition
DNA (deoxyribonucleic acid)
RNA (ribonucleic acid)
Term
monomer of nucleic acids
Definition
nucleotide
Term
structure of nucleotides
Definition
3 subunits
- at least one phosphate group
- 5-C sugar
- ring-shaped nitrogen base
Term
what are the two types of proteins?
Definition
structural and functional
Term
examples of structural proteins
Definition
- keratin
- elastin
- collagen
Term
examples of function proteins
Definition
- enzymes (catalyst)
- antibodies (protection from disease)
- insulin (produces blood sugar)
- hemoglobin (carries oxygen in blood)
Term
proteins are made up of what elements?
Definition
C, O, H, N and sometimes S
Term
protein monomer
Definition
amino acids
Term
subunits of amino acids
Definition
- single H
- carboxyl group (C O OH)
- amino group (H2 N)
- functional R group
Term
molecular difference between saturated and unsaturated fats
Definition
saturated fats don't have a double bond, unsaturated fats have at least one double bond
Term
4 levels of a protein structure
Definition
- primary
- secondary
- tertiary
- quaternary
Term
primary structure
Definition
sequence or order of amino acids in the chain
Term
secondary structure
Definition
shape of the chain of amino acids
- alpha helix
OR
- pleated sheet (accordion)
Term
tertiary structure
Definition
3D shape due to bonding between the secondary structures
Term
quaternary structure
Definition
interaction of 2 or more chains
Term
why are the protein structures important
Definition
without the correct formation of the protein structures, the proteins would denature and no longer be able to carry out essential functions for the body
Term
8 essential amino acids
Definition
- phenylalanine
- methionine
- tryptophan
- valine
- lysine
- threonine
- leucine
- isoleucine
Term
Why are the 8 amino acids essential?
Definition
our bodies cannot synthesize them, BUT our bodies NEED them
Term
what can cause protein to denature?
Definition
- high temps
- extreme pH
- harsh chemicals
Term
denaturing
Definition
loss of function and activity
Term
enzyme
Definition
catalyst that speed up reactions by lowering the activation energy
Term
factors that affect enzyme activity
Definition
- concentration of substrate (or enzyme)
- inhibitors
- pH
- temperature
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