Redox Reactions
In photosynthesis, which molecule provides the electrons that get passed through the electron transport chain?
What is Water (H2O)?
The main purpose of photosynthesis is to convert light energy into this type of energy stored in glucose.
What is Chemical Energy?
This photosystem begins the light reactions by using light energy to split water molecules.
What is Photosystem II (PSII)?
During photosynthesis, plants use sunlight (light energy), H2O, and this gas to make glucose.
What is Carbon Dioxide (CO2)?
If PSII can’t split water, electrons can’t move through the electron transport chain. What would happen to ATP and NADPH production?
What is both ATP and NADPH production decreases or stops completely?
When water is split, its atoms lose electrons. What term describes this loss of electrons?
What is Oxidation?
The light-dependent reactions of photosynthesis occur in these flattened membrane structures inside chloroplasts.
What are Thylakoids?
The final electron acceptor of light reactions in PSI is this molecule.
What is NADP+ (forming NADPH)?
The “C” in CO2 stands for this element, which gives trees and plants their mass.
What is Carbon?
When this environmental factor decreases, chlorophyll cannot absorb enough photons to drive the light reactions correctly.
What is Light Intensity?
Which molecule is reduced to form glucose, storing more energy?
What is Carbon Dioxide (CO2)?
When photons strike chlorophyll, they excite these subatomic particles to a higher energy level.
What are Electrons?
The Calvin Cycle’s inputs include CO2, ATP, and NADPH. Name its three main outputs.
What are G3P, ATP, and NADP+?
The process that changes carbon from an inorganic mass to an organic mass.
What is Carbon Fixation?
If the electron transport chain between PSI and PSII is blocked, this molecule's production drops because fewer H+ ions are pumped into the thylakoid lumen.
What is ATP?
What is the formula for photosynthesis?
What is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2?
The chemical energy stored in glucose is later released through this complementary process, which occurs in the mitochondria.
What is Cellular Respiration?
By fixing CO2, RuBisCO helps transform carbon from a gas into this type of solid compound that stores energy.
What is an Organic Molecule?
Although carbon dioxide (CO2) is a gas, when transformed into glucose and cellulose, its carbon atoms contribute to this measurable property of trees.
What is the Mass of a Tree?
When PSI is damaged, electrons can’t reduce NADP+, but cyclic electron flow might continue. Predict the resulting imbalance between ATP and NADPH.
What is a surplus in ATP and a shortage of NADPH?
During photosynthesis, which two molecules represent the main oxidized and reduced forms of carbon and oxygen?
What is Oxidized CO2, and Reduced C6H1206 (Glucose)?
This enzyme catalyzes the fixation of carbon dioxide (CO2) in the Calvin Cycle.
What is RuBisCO?
The H+ gradient created by the light reactions drives this enzyme to synthesize ATP.
What is the ATP Synthase?
The oxygen (O2) released from photosynthesis comes from this molecule, not carbon dioxide (CO2).
What is Water (H2O)?
If a plant is kept in the dark, how are ATP and NADPH production affected, and what would happen to glucose output?
What is no ATP or NADPH is produced, and Glucose production is stopped?