Question

multiple choice 3 points
to make one molecule of glucose you need
9 atp and 6 nadph molecules
18 atp and 12 nadph molecules
38 atp
matching 3 points
define the following
first organic production of carbon fixation is 3 - phosphoglycerate
first product of carbon fixation is oxaloacetate
first product of carbon fixation is an organic acid at night
cactus is a type
rice is a type
sugarcane

Explanation:

• Sugarcane: It is a \(C_{4}\) plant. In \(C_{4}\) plants, the first product of carbon fixation in the mesophyll cells (a step before the Calvin cycle in bundle - sheath cells) is a 4 - carbon compound (oxaloacetate).
• Rice: It is a \(C_{3}\) plant. In \(C_{3}\) plants, the first product of carbon fixation (by the enzyme RuBisCO) is 3 - phosphoglycerate.
• Cactus: It is a CAM (Crassulacean Acid Metabolism) plant. CAM plants fix carbon at night. The first product of carbon fixation at night is an organic acid (usually malate, which is derived from oxaloacetate).

Answer:

Sugarcane - \(C_{4}\), Rice - \(C_{3}\), Cactus - \(CAM\), first organic production of carbon fixation is 3 - phosphoglycerate - \(C_{3}\), first product of Carbon fixation is oxaloacetate - \(C_{4}\), first product of carbon fixation is an organic acid at night - \(CAM\)