Question

Which of the following statements are true?

1) Electron carriers are located at ribosomes.
2) ATP is a common intermediate between catabolic and anabolic pathways.
3) ATP is used for the long-term storage of energy and so is often found in storage granules.
4) Anaerobic organisms are capable of generating ATP via respiration.
5) ATP can be generated by the flow of protons across protein channels.

Answer 1

True statements are that ATP is an intermediary in metabolic pathways, anaerobic organisms can generate ATP via respiration, and the flow of protons can generate ATP. Electron carriers are part of the ETS, not ribosomes, and ATP is not used for long-term energy storage.

Step-by-step explanation:

Among the statements provided, the following are true:

• ATP is a common intermediate between catabolic and anabolic pathways.
• Anaerobic organisms are capable of generating ATP via respiration.
• ATP can be generated by the flow of protons across protein channels.

Electron carriers are not located at ribosomes; they are instead part of the electron transport system (ETS) which is found on the inner membrane of mitochondria in eukaryotic cells or the cell membrane in prokaryotes. ATP is not used for long-term energy storage; instead, molecules like glycogen and fats are used for this purpose. The generation of ATP by the flow of protons across protein channels is a component of oxidative phosphorylation, where an electrochemical gradient is used to power ATP synthase.