What roles do the different types of cells play in photosynthesis?

Answer 1

There are three different types of photosynthesis as far as i have learned:

1. C3 photosynthesis
2. C4 photosynthesis
3. CAM photosynthesis The difference is that each has a different method of reaching the Calvin cycle further in photosynthesis. The first main differences include:

• C3 plants function best in cooler, moist environments (typical rice or wheat)
• C4 plants are evolved to function in warmer, dryer climates (typical sugar cane or corn)
• CAM plants can basically be thought of as desert plants, evolved to function in places of little water and desert heat (cacti or even pineapples)

C3 plants first bring in carbon dioxide (day or night) and it is fixed by Rubisco (enzyme) into PGA molecules (3-phosphoglycerate molecules) these molecules follow the Calvin cycle producing (eventually) Glucose

C4 plants, because of their warmer (and less water) climate, open their stomata mostly at night or dusk, to reduce water loss. Because of this these plants require carbon dioxide storage to make sure they have enough energy. The carbon dioxide is brought in and reacted catalyzed by PEP carboxylase (enzyme) with a three carbon PEP (phosphenolpyruvate) creating four carbon OAA (oxaloacetate). The OAA is then almost immediately converted into Malate (4 carbon). This Malate is then diffused from the mesophyll cells into the bundle sheath cells. When the cells require CO2 they diffuse the Malate back into the mesophyll cells (through plasmodesmata channels in plant cells). Carbon dioxide is removed and continues in the C3 pathway. PEP is also a product, to be reused.

CAM plants only open the stomata at night, reducing their intake of CO2 . Because of this, these plants take in CO2 and incorporate it into C4 organic acids using a PEP carboxylase enzyme. These acids are stored in vacuoles until needed in the morning, when stomata close and CO2 is released into the C3 Calvin cycle for carbon fixation and the production of glucose.

Answer 2

Plants use photosynthesis to turn sun energy, carbon dioxide, and water in usable glucose (sugar) for food and energy, creating the oxygen we breath as a byproduct.

In a plant cell, photosynthesis occurs in the chloroplasts, and inside those the chlorophyll. The equation of photosynthesis is as follows.

6-H20 + 6-CO2 -> C6H12 O6 + 6-O2

I did not understand what you meant or specifically were trying to ask when you said "different types of cells," but I hope I helped!

Sources: I just aced a Biology test about this specifically.

Answer 3

C3, C4, and CAM photosynthesis.

The difference occurs in the second part of photosynthesis, called the Calvin-Benson cycle, where it fixes CO2 into carbohydrates.

It's not much, but hope it's somewhat helpful.

Answer 4

# CAM # C4 # C3