Photosynthesis Overview
Light Reactions
Calvin Cycle
More than one way to fix a CO2
Chemiosmosis in Chloroplasts and Mitochondria

100

Plants are autotrophic organisms that obtain energy for their survival through the process of?
What is photosynthesis?

100

The pigment that gives a plant its green color and absorbs light in the chloroplast?
What is chlorophyll?

100

The source molecule for carbon, providing most of the dry mass of a plant.
What is carbon dioxide?

100

Generally thought of as wasteful, this occurs when RuBisCO adds oxygen to ribulose 1,5-bisphosphate.
What is photorespiration?

100

Both chloroplasts and mitochondria produce ATP by this process.
What is chemiosmosis?

200

Photosynthesis converts _______ energy to chemical energy.
What is light energy?

200

The colors of light absorbed by chlorophyll
What are blue and red light?

200

A major carbohydrate metabolic intermediate that can be produced by three cycles of the Calvin Cycle.
What is glyceraldehyde 3-phosphate? (G3P)

200

These separate oxygen generation from the Calvin cycle into different cell types.
What are C4 plants?

200

The site of electron transport and of the ATP synthase used in photosynthesis
What is the thylakoid membrane?

300

Photosynthesis occurs in what organelle in a plant cell?
What is a chloroplast?

300

As this increases, the energy of electromagnetic radiation decreases
What is a wavelength?

300

The enzyme that catalyzes fixation of CO2 into carbohydrates
What is RuBisCO?

300

Familiar from the last step of glycolysis, this intermediate is the usual acceptor for CO2 in both C4 and CAM plants. (acronym is sufficient)
What is PEP? (phopshoenolpyruvate)

300

The folds of the inner mitochondria membrane and the stacks of thylakoid both serve to increase this.
What is surface area?

400

Gases, such as carbon dioxide and oxygen, pass in and out of a plant through these pores.
What is the stomata?

400

The light-harvesting complex at which water is "split" O2 gas is generated.
What is photosystem II?

400

Supplies the high-energy electrons to reduce 1,3-bisphosphoglycerate to glyceraldehyde 3-phosphate?
What is NADPH (+H+)?

400

Specialized cells for the Calvin cycle in C4 plants where only photosystem I operates (to limit oxygen).
What are bundle-sheath cells?

400

Because of electron transport, both the inter-membrane space of mitochondria and the thylakoid space in chloroplasts have ______ pH
What is low? (or acidic)

500

This requires both photosystems to get electrons from oxygen eventually to reduce NADP+ to NADPH +H+
What is "linear electron flow" or the "Z scheme."

500

Acting alone, this can generate ATP through the electron transport system, but not O2 gas
What is Photosystem 1?

500

Notoriously inefficient in both water use and energy production, these plants use RuBisCO to fix carbon dioxide directly from air (with no intermediate steps).
What are C3 plants?

500

These store CO2 in organic acids to be used during the day, when their stomata are closed.
What are CAM plants?

500

A the final electron acceptor in respiration and the initial electron donor in photosynthesis.
What is oxygen?