Question

What is the major rate limiting and regulatory enzymatic step in glycolysis? a. GAPDH b. Phosphofructokinase...

What is the major rate limiting and regulatory enzymatic step in glycolysis?

a.

GAPDH

b.

Phosphofructokinase

c.

Hexokinase

d.

Pyruvate Kinase

Which following molecule(s) are positive regulators of this enzyme (PFK, Question 34)?

a.

Fructose-2,6-Bisphosphate

b.

AMP

c.

Citrate

d.

(c) and (d)

e.

ATP

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
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]...
BIOCHEMISTRY ASSIGNMENT Please use your understanding to address the few concerns below * Required Index Number:...
BIOCHEMISTRY ASSIGNMENT Please use your understanding to address the few concerns below * Required Index Number: * Your answer Program: Choose BSc Midwifery BSc Nursing Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * Captionless Image A B C D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose glycogen...
BIOCHEMISTRY ASSIGNMENT Please use your understanding to address the few concerns below * Required Index Number:...
BIOCHEMISTRY ASSIGNMENT Please use your understanding to address the few concerns below * Required Index Number: * Your answer Program: Choose BSc Midwifery BSc Nursing 1.When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * a) glucose b) glycogen c) sucrose d) maltose 2.Which of the following enzyme groups can catalyse oxidation reactions? * a) phosphorylases b) isomerases c) hydrolases d) dehydrogenases 3.Enzymes...
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...
1. Which sentence best defines signal transduction in a biochemical context? a. Alteration of cell functions...
1. Which sentence best defines signal transduction in a biochemical context? a. Alteration of cell functions in response to the environment b. Generation of a chemical change in response to information c. Induction of cell death upon nutrient starvation d. Responses to stimuli 2. Which statement is correct? a. G protein-coupled receptors produce second messengers indirectly while receptor enzymes catalyse second messenger generation b. Second messengers stimulate the activity of G protein-coupled receptors. c. Receptor enzymes produce second messengers through...
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...