ATP's sugar component and production sites

Steps:

• Recall ATP structure: adenosine triphosphate consists of adenine, ribose (a pentose sugar), and three phosphate groups.
• Identify ATP production: occurs via cellular respiration in mitochondria and photosynthesis in chloroplasts.
• Examine options: match sugar type and organelles to ATP features.
• Select matching row: pentose sugar with both mitochondria and chloroplasts.

Why B is correct:

• ATP's nucleoside is adenosine, built on ribose—a pentose sugar—and ATP synthesis happens in mitochondria (oxidative phosphorylation) and chloroplasts (photophosphorylation).

Why the others are wrong:

• A: Deoxyribose is in DNA nucleotides, not ATP; ATP produced in both organelles.
• C: Hexose (e.g., glucose) is a fuel for ATP production, not part of ATP; ATP made in both organelles, not chloroplasts only.
• D: Ribose is correct, but ATP produced in both organelles, not mitochondria only.

Final answer: B