How Does Carbon Fixation Differ Between C₃ and C₄ Plants

question 29

Multiple Choice

How does carbon fixation differ between C₃ and C₄ plants?

• A)C₄ plants undergo carbon fixation by carboxylation of a four-carbon substrate (oxaloacetate),while in C₃ plants,a three-carbon compound (phosphoglycerate)is carboxylated.
• B)Both C₃ and C₄ plants involve carboxylation of ribulose-1,5-bisphosphate by rubisco;but in C₃ plants,the first stable intermediate is 3-phosphoglycerate,and in C₄ plants,it is oxaloacetate.
• C)C₃ plants don't undergo photorespiration,but C₄ plants do.
• D)Rubisco is the primary enzyme that catalyzes carbon fixation in C₃ plants,and phosphoenolpyruvate carboxylase can catalyze carbon fixation in C₄ plants.

---

Definitions:

Gender And Suicide

The study of how gender influences suicidal behavior and suicide rates, often identifying differences between males and females.

Lethal Means

Methods or objects capable of causing death, often discussed in the context of suicide prevention.

Subintentional Death

A death in which the victim plays an indirect, hidden, partial, or unconscious role.

Lifestyle

The interests, opinions, behaviors, and behavioral orientations of an individual, group, or culture, which can impact health and well-being.