Explanation: A glucose (six carbons) molecule enters glycolysis and produces two three carbon molecules (pyruvate). Each pyruvate is broken down into a two carbon acetyl-CoA molecule that enters the citric acid cycle. Each acetyl-CoA molecule produces three and one in the citric acid cycle.
What enters the citric acid cycle?
The citric acid cycle begins with
the transfer of a two-carbon acetyl group from acetyl-CoA to the four-carbon acceptor compound (oxaloacetate) to form a six-carbon compound (citrate)
. The citrate then goes through a series of chemical transformations, losing two carboxyl groups as CO
2
.
What is not a product of the citric acid cycle?
Reactants And Products Of The Citric Acid Cycle : Example Question #1. Which of these molecules is not a product of the citric acid cycle? Explanation:
Flavin mononucleotide (FMN)
is not produced by the citric acid cycle.
What is the end product of citric acid cycle?
Thus, the correct answer is ‘
Carbon dioxide
. ‘
What are the chemical outputs from the citric acid cycle?
| Process | Citric Acid Cycle (Krebs Cycle) | Location | Mitochondria (Matrix) | Input | 2 Acetyl-CoA | Output | 2 ATP 6 NADH 2 FADH 2 4 CO 2 |
|---|
What are the steps of citric acid cycle?
- Oxidative Decarboxylation of pyruvate to Acetyl CoA.
- Step 1: Condensation of acetyl CoA with oxaloacetate.
- Step 2: Isomerization of citrate into isocitrate.
- Step 3: Oxidative decarboxylations of isocitrate.
- Step 4: Oxidative decarboxylation of α-ketoglutarate.
What are the main products of the citric acid cycle select all that apply?
The citric acid cycle involves eight chemical reactions that produce
carbon dioxide, ATP, NADH and FADH2
. The NADH and FADH2 are electron carriers that can be used by the electron transport chain (ETC).
What is the first product of the citric acid cycle?
The Krebs cycle itself actually begins when acetyl-CoA combines with a four-carbon molecule called OAA (oxaloacetate) (see Figure above). This produces
citric acid
, which has six carbonatoms.
Why citric acid cycle is called TCA cycle?
Citric acid is a so-called tricarboxylic acid, containing three carboxyl groups (COOH)
. Hence the Krebs cycle is sometimes referred to as the tricarboxylic acid (TCA) cycle.
What are the major inputs and outputs of glycolysis?
Input for the breakdown of 1 glucose molecule in glycolysis is 2 ATP and the output is 4 ATP, 2 NADH and 2 pyruvate molecules
. Metabolic pathway which provides anaerobic source of energy in all organisms is glycolysis.
What are the 8 steps of the citric acid cycle?
The eight steps of the citric acid cycle are a series of
redox, dehydration, hydration, and decarboxylation reactions
. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
Is the breakdown of glucose into a form that converts it into a more useful energy for the cell?
Cellular respiration
releases stored energy in glucose molecules and converts it into a form of energy that can be used by cells.
What happens to glucose after glycolysis?
During glycolysis, glucose ultimately
breaks down into pyruvate and energy
; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O).
