Bchintermediate
Select ALL correct statements about glycolysis.
Answer
It occurs in the cytoplasm., It produces two triose phosphate molecules from one glucose molecule., Its net yield from glucose is two adenosine triphosphate (ATP) molecules.
Explanation
### Why this is right
- The cytoplasmic location is specified for glycolytic enzymes.
- The six-carbon sugar is split into two three-carbon triose phosphates.
- Glycolysis uses two ATP and forms four, giving a net yield of two per glucose.
### The concept
Glycolysis can operate without oxygen because oxygen is not a direct substrate in its reactions. In anaerobic tissues, fermentation helps recycle NAD+ so the pathway can continue.
### The other options
- **It requires oxygen as a direct reactant in every step.** Oxygen is not directly consumed by glycolysis; this confuses glycolysis with oxygen-dependent respiration.
### Terms
- **ATP**: Adenosine triphosphate, a cellular energy-transfer molecule.
- **Triose phosphate**: A phosphorylated three-carbon sugar.
### Remember
Separate glycolysis itself from the oxygen-dependent processes that may follow it.
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