chp 3: the organic molecules of life

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1
Organic molecules contain what 2 elements?
carbon and hydrogen
2
What do the characteristics of carbon allow for?
a great deal of variation in carbon-based molecules
3
How are monomers and polymers different?
monomers are what form polymers
4
monomers
the building blocks that form molecules
5
What process forms polymers from monomers?
polymerization
6
What process forms monomers from polymers?
hydrolysis
7
carbohydrates
short term energy storage
8
What are the subunits of carbohydrates?
monosaccharides (sugar molecules)
9
Name three monosaccharides
glucose, ribose, deoxyribose
10
Which monosaccharide is most important to life?
glucose
11
Name three disaccharides
maltose, sucrose, lactose
12
What are the three disaccharides uses?
maltose is used for brewing beer, sucrose used as a sweetener, lactose is used in milk
13
Name four polysaccharides
starch, glycogen, cellulose, chitin
14
all monosaccharides are what
monomers
15
lipids
fats and oils used for long-term energy storage
16
saturated
solid at room temperature, no double bonds
17
unsaturated
double bonds, semi-liquid
18
What lipid makes up plasma membranes of cells?
phospholipid
19
What are trans fats and why are they banned at many restaurants around the world?
trans fats re a form of unsaturated fat, they are banned because they stick to saturated fats which forms plaque and causes artheroschlerosis (a disease that causes high blood pressure and heart attacks)
20
What two steroid molecules are involved with sex determination in humans as well as many other mammals?
testerone and estrogen
21
peptide
one or more amino acids held together by covalent bonds
22
proteins
polymers of amino acids held together by peptide bonds as the primary structure
23
What does denature mean?
broken down and inactivated
24
How many amino acids are there in the body?
20
25
What are the four structures of protein folding?
primary, secondary, tertiary, quaternary
26
secondary structure
pleated sheets or helices
27
tertiary structure
has additional folding from the secondary structure
28
quaternary structure
joining polypeptides each with their own primary through tertiary structure
29
DNA
deoxyribonucleic acid; a double helix, made of subunits called nucleotides. bases are A, T, C, and G
30
RNA
ribonucleic acid, with base U instead of T, single stranded doesnt form helix
31
DNA is made of individual monomers called what?
nucleotides
32
What are the 3 subunits of DNA?
5-carbon sugar, phosphate group, nitrogenous base
33
What makes up the DNA ribbon?
the backbone composes of phosphates bonded to sugars
34
What makes up the ladder rungs of DNA?
nitrogenus bases
35
What bond is between DNA's bases?
hydrogen bonds
36
Which base complements with what?
AT, GC
37
DNA and RNA are what
polymers of nucleic acids involved in the genetic function of cells
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