.
Production of pyruvate in (1) / Oxidation of pyruvate in (2) / Transfer of electrons in (3)
Production of pyruvate in (3) / Oxidation of pyruvate in (2) / Transfer of electrons in (4)
Production of pyruvate in (2) / Oxidation of pyruvate in (1) / Transfer of electrons in (4)
Production of pyruvate in (1) / Oxidation of pyruvate in (4) / Transfer of electrons in (3)
A
B
C
D
Oxidative phosphorylation
Oxidative decarboxylation
Pyruvate production
Pyruvate reduction
Prevent a pile-up (accumulation) of hydrogen ions
Prevent a pile-up of NAD+
Act as a final electron acceptor that helps to move electrons down a chain for the production of ATP
Oxidize glucose molecules
1 ATP
2 ATP
3 ATP
ATP
1 ATP
2 ATP
3 ATP
4 ATP
Oxygen
Carbon dioxide
ATP
Glucose
Oxygen
ATP
Water
Glucose
Within the cytoplasm of a cell
On the cristae of mitochondria
Within the matrix of mitochondria
Within the stroma of chloroplasts
Glucose and oxygen are delivered to the cells by the bloodstream.
Carbon dioxide and water are removed from the cells by the bloodstream.
ATP remains in the cytoplasm as a source of energy for the cell to do work.
In mitochondria, glucose is broken down where carbon dioxide, water as well as ATP are produced.
NAD is reduced and becomes NADH2 when it accepts hydrogen atoms.
NAD is oxidized and becomes NADH when it accepts hydrogen atoms.
NAD is reduced and becomes NADH2 when it releases hydrogen atoms.
NADH2 is reduced to NAD when the hydrogen atoms are passed to another acceptor.
NAD+ can only be used once before it must be resynthesized.
NAD+ can accept hydrogen atoms and is reduced to NADH2.
NADH2 can carry the hydrogen atoms to another acceptor, becoming oxidized to NAD+ again.
NAD+ is involved in cellular respiration.
Glycolysis takes place within the cytoplasm.
Glycolysis uses two ATP but forms four ATP, resulting in a net gain of two ATP molecules.
During glycolysis, two molecules of NAD+ are reduced to form 2NADH + 2H+
Glycolysis begins with a glucose molecule and ends with four pyruvate molecules.
Once
Twice
Three times
Four times
NADH
ATP
ADP
FADH2
Lactic acid
NADH
FADH2
Acetyl-CoA
Oxygen
Carbon dioxide
Lactic acid
Citric acid
C6H12O6 -----> 2 pyruvic acids + 2 ATP
6 CO2 + 6 H2O + energy -----> C6H12O6 + 6 O2
C6H12O6 + 6 O2 -----> 6 CO2 + 6 H2O + energy
C6H12O6 -----> 2 lactic acid + 2 ATP
Glycolysis
Krebs cycle
Electron transport system
Fermentation
C6H12O6 -----> 2 pyruvic acid + 2 ATP
C6H12O6 + 6 O2 -----> 6 CO2 + 6 H2O + energy
C6H12O6 -----> 2 lactic acid + 2 ATP
C6H12O6 -----> 2ethyl alcohol + 2 CO2 + 2 ATP
Fermentation
The Krebs cycle
The electron transport system
Glycolysis
Only the electron transport system remains operative.
More hydrogen gas is produced because oxygen, the final acceptor, is not present.
The cells production of ATP molecules is cut.
Glycolysis still occurs because NADH2 passes its hydrogen atoms to pyruvate.
22 ATP
36 ATP
30 ATP
34 ATP
4 ATP
8 ATP
20 ATP
22ATP
Forming the cristae.
Increasing the metabolic and energy-producing activities of mitochondria.
Allowing a greater amount of membrane to be packed into the mitochondrion.
All of them.