A&P 3b Flashcards
What are 5 things that describe cellular respiration?
- Exergonic multistep metabolic pathway
• Organic molecules oxidized and disassembled by a
series of enzymes
• Potential energy in chemical bonds released
• Energy used to make ATP (endergonic process)
• Oxygen required
Glucose oxidation is?
- Step by step breakdown of glucose with energy release
– Carbon dioxide and water formed
Chemical equation, cellular respiration?
C6H12O2 + 6 O2 6 CO2 + 6 H2O
Some of the energy of broken bonds can be captured to
attach _____ to ADP
phosphate group
Direct synthesis of ATP called
substrate-level phosphorylation
Oxidative phosphorylation is…
- energy first released to coenzymes (e.g., NAD+, FAD)
* that energy then transferred to form ATP
Enzymes for glucose oxidation are found in what parts of the cell?
the cytosol and mitochondria
Stages of glucose oxidation?
-glycolysis, citric acid cycle, electron transport system
Glycolysis is what type of cellular respiration?
anaerobic cellular respiration
Glycolysis occurs where? & can occur without?
occurs in cytosol
• can occur without oxygen
The electron transport system is what type of respiration?
aerobic cellular respiration = requires oxygen
Where does the electron transport system occur?
in the mitochondria
Glucose is broken down into what during glycolysis?
into two pyruvate molecules
Pyruvates fate depends on what during glycolysis?
oxygen availability
Glycolysis has a net production of what molecules?
two ATP and two NADH
