Lecture Test 1 Exam Questions and
Answers
What makes up most of the body?
1)protein
2)fats
3)carbohydrates
4)minerals
5)water - ANSWER-Water is by far the most commonly found being roughly 60 % or
more of the person's total composition
Define Anabolic and Catabolic. - ANSWER-Anabolic=production
Catabolic=breakdown
What is the organic representation of an Aldehyde and a Ketone. - ANSWER-aldehyde
R-C=O
l
H
ketone
R-C=O
l
R'
If acids and alchols are the reactants then water and _______ are in the products. -
ANSWER-ester
RCOOR'
Phosphodiester structures what acid between what 2 groups? - ANSWER-Phosphoric
Acid and the two groups are hydroxyl groups
What is the sequence of amino acids in a protein called? - ANSWER-primary structure
What type of bond join one amino acid with another? - ANSWER-peptide bond between
the alpha carboxyl group of one amino acid and the alpha amino group of another
What type of bond is the peptide bond similar to, single, double, or triple? - ANSWER-
Double because it does not allow free rotation but is a flexible bond which allows for
variation in shape
What are two example of secondary structures? - ANSWER-alpha helix and beta sheets
What stabilizes alpha helix of a secondary structure? - ANSWER-hydrogen bonds
, How many amino acids per turn of an alpha helix? - ANSWER-3.6
What Amino acids disrupt an alpha helix? - ANSWER-proline
glutamate
aspartate
histidine
lysine
arginine
What is the difference between alpha helix and b sheets besides shape? - ANSWER-
unlike alpha helix beta sheets are composed of 2 or more peptide chains and the
hydrogen bonds are perpendicular in beta sheets
Can beta sheets be arrange only in parallel? - ANSWER-No they can be either parallel
or anti parallel
What amino acids have negative side chains? - ANSWER-Aspartic acid and glutamic
acid
What amino acids have positive side chains? - ANSWER-arginine, lysine, histidine
what amino acids have uncharged polar side chains? - ANSWER-asparagine
glutamine
serine
threonine
tyrosine
What amino acids have nonpolar side chains? - ANSWER-alanine
glycine
valine
leucine
isoleucine
proline
phenylalanine
methionine
tryptophan
cysteine
What are the branch chain amino acids? - ANSWER-leucine
isoleucine
phenyalanine
and they have similar metabolism
What are the aromatic amino acids? - ANSWER-phenylalanine
tryptophan