903 / 912
Answers
895
Copyright © 2017 Pearson Education, Inc.
Answers to Chapter 23 Practice Test
1.
biotin and vitamin
KH
2
2.
methyl
1
CH
3
2
,
methylene
1
CH
2
2
,
formyl
1
HC
“
O
2
3.
+
NR
H
H
C
O
B H
NR
OH
CH
B
+
4.
−
O
CH
2
CH
3
CH
3
CH
C
O
C
O
5.
The first step is removing the hydrogen atom that is going to change places with a group on an adjacent carbon.
CH
3
Ad
CH
2
Ad
C
C
X
C
C
X
H
Co(II)
Co(II)
6.
first coenzyme
=
biotin
second coenzyme
=
coenzyme B
12
7.
NHCHC
O
CH
2
CH
2
COO
−
NHCHC
O
CH
2
CH
−
OOC COO
−
8.
−
O CH
2
SCoA
C
O
C
O
9.
a.
ATP, Mg
2
+
, HCO
3
-
b.
ATP activates bicarbonate
1
HCO
3
-
2
by putting a good leaving group (phosphate) on it.
Mg
2
+
com-
plexes with ATP in order to reduce the negative charge on ATP so that it can react with a nucleophile.
HCO
3
-
is the source of the
COO
-
group that is put on the reactant.