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BCHM 307 Exam 1/ Questions with Correct Verified Answers- Latest Update 2024.
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BCHM 307 Exam 1/ Questions with Correct Verified Answers- Latest Update 2024.
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BCHM 307 Exam 1/ Questions with Correct Verified Answers-Latest Update 2024.
All amino acids are based upon the same general structure which includes - ANSWER - an alpha carbon,
an amino group, a carboxyl group and a R group
There are 4 different substituents attached to the alpha-carbon, thus most amino acids are __. __ is the
only exception because its R group is H. - ANSWER - chiral; gLYCINE
Amino acids have two possible ___ - ANSWER - stereoisomers
Enantiomers are a particular type of stereoisomers that are ____ - ANSWER - mirror images of one
another
Amino acids can be either __ (except glycine) - ANSWER - D or L - enantiomers
Proteins are made from __ amino acids - ANSWER - L
D- amino acids are found in ___ - ANSWER - bacterial cell walls and some antibiotics but are relatively
rare in nature
Hydrophobic (nonpolar) - ANSWER - -Alanine
-Valine
-Leucine
-Isoleucine
-Proline
- Methionine
pg. 1
, - Phenylalanine
- Tryptophan
-Glycine
Polar, uncharged - ANSWER - -Serine
- Threonine
-Cysteine
- Tyrosine
- Asparagine
-Glutamine
Polar, charged - ANSWER - -Aspartic acid
-Glutamic acid
- Lysine
- Arginine
- Histidine
Organisms that can make all of the 20 amino acids - ANSWER - bacteria, yeast, and plants
Some amino acids are made directly from common metabolic intermediates.. alanine is made from ___ -
ANSWER - pyruvate
Some amino acids are made as products from long and complex pathways.. aromatic amino acids from
the ___ - ANSWER - shikimic acid pathway
The essential amino acids - ANSWER - 1. Arginine
2. Histidine
3. Isoleucine
4. Leucine
pg. 2
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