1. Fructose 6-phosphate is transformed by an enzymatic reaction
to become fructose 1,6-bisphosphate using which nucleotide-based...
1. Fructose 6-phosphate is transformed by an enzymatic reaction
to become fructose 1,6-bisphosphate using which nucleotide-based
molecule?
Select one:
a. Pyruvate dehydrogenase
b. Adenosine Triphosphate
c. Phosphofructokinase
d. Phosphoglycerate kinase
e. Pyruvate kinase
2.
Which of the following chemical reactions does not occur during
aerobic glycolysis?
Select one:
a. oxidation of NADH
b. phosphorylation of ADP
c. reduction of NAD+
d. enzymatic action of PFK
e. hydrolysis of ATP
3.
The prokaryotic enzyme DNA polymerase III performs a similar
function...
The rate limiting reaction of aerobic respiration involves the
phosphorylation of [phosphofructokinase, fructose biphosphate,
fructose phosphate,...
The rate limiting reaction of aerobic respiration involves the
phosphorylation of [phosphofructokinase, fructose biphosphate,
fructose phosphate, ADP, hexose] by the enzyme [cytochrome c
oxidase, hexokinase, phosphofructokinase, succinate dehydrogenase].
The rate at which this enzyme makes product is [increased,
decreased] when ATP levels rise because the molecule [fumarate,
succinate, AMP, ATP, cAMP, PKA] binds to an [allosteric, reglatory
region, active, coding region] site on the enzyme and acts as a(n)
[indirect, transcriptional, direct, transitional] [factory, factor,
inhibitor, activator]. When ATP levels...
Fructose-1,6-bisphosphatase and phosphofructokinase (PFK-1) are
inversely regulated by ____ and _____.
a. fructose-2,6-bisphosphate; AMP
b. insulin-glucagon...
Fructose-1,6-bisphosphatase and phosphofructokinase (PFK-1) are
inversely regulated by ____ and _____.
a. fructose-2,6-bisphosphate; AMP
b. insulin-glucagon ratio
c. feedback inhibition; phosphorylation/dephosphorylation
d. A and B
e. B and C
Adenosine monophosphate (AMP) is a regulatory molecule in
metabolic processes such as glycolysis and gluconeogenesis. For...
Adenosine monophosphate (AMP) is a regulatory molecule in
metabolic processes such as glycolysis and gluconeogenesis. For
example, it stimulates the glycolytic enzyme phosphofructokinase,
and therefore ATP production, and it inhibits the gluconeogenic
enzyme fructose 1,6-bisphosphatase. Adenylate kinase catalyzes the
reversible reaction shown here: During periods of intense activity,
when glycolysis is used in the generation of ATP, the reaction lies
to the right, decreasing [ADP], generating ATP, and accumulating
AMP. However, [ATP] is usually much greater than [ADP], and [ADP]...
1
In the absence of
oxygen, cells consume glucose at a high, steady rate. When oxygen...
1
In the absence of
oxygen, cells consume glucose at a high, steady rate. When oxygen
is added, glucose consumption drops precipitously and is then
maintained at the lower rate. Why is glucose consumed at a high
rate in the absence of oxygen and at a low rate in its
presence?
2
In the following
diagram showing the distribution of thermal energy in a population
of substrate molecules, the energy thresholds indicated by numbers
represent ...
Energy
per molecule
Number...
READ THE CASE STUDY AND ANSWER THE FOLLOWING QUESTIONS
2nd CASE: An
Unexplained Death
A 65-year-old...
READ THE CASE STUDY AND ANSWER THE FOLLOWING QUESTIONS
2nd CASE: An
Unexplained Death
A 65-year-old man of Scandinavian descent was rushed to the
Emergency Room of your local hospital after a family member
discovered him unconscious in his home. The woman who dialed “911”
told the dispatcher that the man, her brother, was the local
librarian of the past 10 years and had no spouse or children. She
reported that they had spoken the day before, and he had...