Why Does Rubisco Show Relatively Little Preference for CO₂ as a Substrate

question 87

Multiple Choice

Why does Rubisco show relatively little preference for CO₂ as a substrate over O₂?

• A)Both CO₂ and O₂ bind directly to Rubisco's active site.
• B)CO₂ and O₂ bind to RuBP,which occupies the active site; their ability to attack RuBP is roughly equal.
• C)Rubisco binds to a regulatory site.
• D)CO₂ and O₂ bind to a regulatory site instead of the active site.
• E)Both O₂ and CO₂ are repelled RuBP.