13. In reference to Table 1 on page 19, what functional groups are always found in amino acids? AMine group TAILRO Droteins called polypeptides? Functional Structure Group Description Example found in alcohols R-OH Hydroxyl e.g., ethanol (beer) нн H-C-C-OH double-bonded oxygen on exterior car- bon Carbonyl Aldehyde e.g., formaldehyde (preservative) 11 R-C-H H. double-bonded oxygen on interior car- bon R-C-R H. Carbonyl (Molecules must contain at least three carbons to contain a ketone) H-C-C-C-H Ketone НО О ОН e.g., acetone; found in fingernail polish remover found in many organic acids; contains a hydroxyl group e.g., formic acid, smallest organic acid; makes fire ant bites hurt 3D0 R-C Carboxyl Он HO. found in amino acids, which are used to make protein e.g., the amino acid glycine Н O=c-C-N H- R-N H. Amine Но molecules that contain -SH e.g., ethanethiol H-C-C-SH Sulfhydryl R-SH нн common to nucleic acids; contains a hydroxyl group e.g., glycerol phosphate OH OH H H-C-C-C-0-P-O Phosphate R-0-P-O ОН molecules with side groups of -CH,, the only nonpolar and hydrophobic functional H. C-H Methyl R-C-H group HICIH O=P

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Chapter19: Proteins
Section: Chapter Questions
Problem 19.72E: What functional groups are found in all amino acids? How many different amino acids are found in...
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13.
In reference to Table 1 on page 19, what functional groups are always found in amino acids?
AMine group
TAILRO Droteins called polypeptides?
Transcribed Image Text:13. In reference to Table 1 on page 19, what functional groups are always found in amino acids? AMine group TAILRO Droteins called polypeptides?
Functional
Structure
Group
Description
Example
found in alcohols
R-OH
Hydroxyl
e.g., ethanol (beer)
нн
H-C-C-OH
double-bonded oxygen on exterior car-
bon
Carbonyl
Aldehyde e.g., formaldehyde (preservative)
11
R-C-H
H.
double-bonded oxygen on interior car-
bon
R-C-R
H.
Carbonyl
(Molecules must contain at least three
carbons to contain a ketone)
H-C-C-C-H
Ketone
НО О ОН
e.g., acetone; found in fingernail polish
remover
found in many organic acids; contains a
hydroxyl group
e.g., formic acid, smallest organic acid;
makes fire ant bites hurt
3D0
R-C
Carboxyl
Он
HO.
found in amino acids, which are used to
make protein
e.g., the amino acid glycine
Н
O=c-C-N
H-
R-N
H.
Amine
Но
molecules that contain -SH
e.g., ethanethiol
H-C-C-SH
Sulfhydryl
R-SH
нн
common to nucleic acids; contains a
hydroxyl group
e.g., glycerol phosphate
OH OH H
H-C-C-C-0-P-O
Phosphate
R-0-P-O
ОН
molecules with side groups of -CH,, the
only
nonpolar and hydrophobic functional
H.
C-H
Methyl
R-C-H
group
HICIH
O=P
Transcribed Image Text:Functional Structure Group Description Example found in alcohols R-OH Hydroxyl e.g., ethanol (beer) нн H-C-C-OH double-bonded oxygen on exterior car- bon Carbonyl Aldehyde e.g., formaldehyde (preservative) 11 R-C-H H. double-bonded oxygen on interior car- bon R-C-R H. Carbonyl (Molecules must contain at least three carbons to contain a ketone) H-C-C-C-H Ketone НО О ОН e.g., acetone; found in fingernail polish remover found in many organic acids; contains a hydroxyl group e.g., formic acid, smallest organic acid; makes fire ant bites hurt 3D0 R-C Carboxyl Он HO. found in amino acids, which are used to make protein e.g., the amino acid glycine Н O=c-C-N H- R-N H. Amine Но molecules that contain -SH e.g., ethanethiol H-C-C-SH Sulfhydryl R-SH нн common to nucleic acids; contains a hydroxyl group e.g., glycerol phosphate OH OH H H-C-C-C-0-P-O Phosphate R-0-P-O ОН molecules with side groups of -CH,, the only nonpolar and hydrophobic functional H. C-H Methyl R-C-H group HICIH O=P
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