Which statement describes the citric acid cycle?
This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration.
What is citric acid cycle quizlet?
citric acid cycle definition. –
a metabolic pathway that converts carbon atoms to CO2 and, in doing so, conserves metabolic free energy that ultimately drives the synthesis of ATP
. – a central pathway whose intermediates are both precursors and products of a large variety of biological molecules.
Why is the citric acid cycle described as a cycle?
It is a cycle because
oxaloacetic acid (oxaloacetate) is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle
.
What is citric acid cycle simple definition?
Definition. (1) A cycle of reactions catalyzed by enzymes in which pyruvate derived from nutrients and converted to Acetyl Coenzyme A is completely oxidized and broken down into carbon dioxide and water to produce high-energy phosphate compounds, which are the source of cellular energy.
What occurs in the first step of the citric acid cycle?
The citric acid cycle utilizes mitochondrial enzymes. The first step is
fusion of the acetyl group of acetyl-CoA with oxaloacetate, catalyzed by citrate synthase
. CoA-SH and heat are released and citrate is produced.
Where does citric acid cycle occur?
The TCA cycle, also known as the citric acid cycle or Krebs cycle, occurs
in the mitochondria
and provides large amounts of energy in aerobic conditions by donating electrons to three NADH and one FADH (flavin adenine dinucleotide), which donate electrons to the electron transport chain, creating the proton gradient …
What is the function of the citric acid cycle quizlet?
The function of the citric acid cycle is
to harvest high-energy electrons from carbon fuels
.
What are the steps of the citric acid cycle quizlet?
- Acetyl-CoA is turned into Citric Acid.
- Citric Acid is turned into Isocitrate.
- Isocitrate is turned into a-Ketoglutarate. …
- a-Ketoglutarate is turned into Succinyl-CoA. …
- Succinyl-CoA is turned into Succinate. …
- Succinate is turned into Fumarate. …
- Fumarate is turned into Malate.
What is produced during one citric acid cycle quizlet?
The citric acid cycle generates
3 molecules of NADH, 1 molecule of FADH2, and 1 molecule of GTP(ATP) per acetyl-sCoA
that enters the cycle. Thus, in total, from each round of the citric acid cycle approximately 10 molecules of ATP are produced.
What is the overall function of the citric acid cycle?
Both aerobic and anaerobic organisms use the citric acid cycle to generate energy. The main function of this cycle is the
oxidation of nutrients to produce effective chemical energy in the form of ATP molecules used in various biological processes
.
How do you remember the citric acid cycle?
- Mnemonic: Our City Is Kept Safe And Sound From Malice.
- Remember the enzymes of the cycle:
- Another Mnemonic: Citrate Is Kreb’s Starting Substrate For Making Oxaloacetate.
- Alcoholism and Hypoglycemia:
What are the 8 steps of the citric acid cycle?
- Step 1: Citrate synthase. The first step is to put energy into the system. …
- Step 2: Aconitase. …
- Step 3: Isocitrate dehydrogenase. …
- Step 4: α-Ketoglutarate dehydrogenase. …
- Step 5: Succinyl-CoA synthetase. …
- Step 6: Succinate dehydrogenase. …
- Step 7: Fumarase. …
- Step 8: Malate dehydrogenase.
Which of the following best describes the citric acid cycle as a central pathway of metabolism?
Which of the following best describes the importance of the citric acid cycle as a central pathway of metabolism?
The citric acid cycle is a central pathway for recovering energy from several metabolic fuels
.
What is the main function of the citric acid cycle in energy production chegg?
Primary function of Citric Acid cycle is the
production of ATP
. It is the final common pathway for oxidation of carbohydrate, lipids and protein via acetyl CoA or intermediate of the cycle. Citric Acid cycle is an Amphibolic process, which describes a biochemical pathway that involves both catabolism and anabolism.
What does TCA cycle stand for describe the different steps of TCA cycle?
TCA Cycle (
Tricarboxylic Acid Cycle
) “TCA cycle is the series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl CoA derived from carbohydrates, fats, and proteins into ATP.” TCA cycle or Tricaboxylic Cycle is also known as Kreb’s Cycle or Citric Acid Cycle.
Which steps of the citric acid cycle generate CO2 quizlet?
Stage 2
– the citric acid cycle oxidizes acetyl-CoA to produce CO2, reduced electron carriers, and a small amount of ATP. Stage 3 – the reduced electron carriers are reoxidized, providing energy for the synthesis of additional ATP.
