Cytochrome b6f Proton Pumping and ATP Synthesis

The video tutorial explains the electron transfer process in photosynthesis, focusing on the cytochrome B6 F complex and its role in creating a proton gradient. This gradient powers ATP synthase, similar to mitochondria. The process, known as photophosphorylation, uses photosynthesis to produce ATP, which is crucial for the Calvin Cycle. The tutorial also covers the function of photosystems and electron carriers, highlighting the similarities with mitochondrial processes.

What is the primary role of the cytochrome B6 F complex in the electron transport chain?

• To transfer electrons to plastocyanin

• To absorb light energy

• To create a proton gradient by pumping protons

• To synthesize ATP directly

What is the process called that uses the power of photosynthesis to convert ADP to ATP?

• Photophosphorylation

• Oxidative phosphorylation

• Calvin Cycle

• Glycolysis

Which of the following is a product of photosystem II that is used in the Calvin Cycle?

• ATP

• Glucose

• Oxygen

• NADPH

What is the role of plastocyanin in the electron transport chain?

• To synthesize ATP

• To pump protons into the thylakoid lumen

• To transfer electrons to photosystem one

• To absorb light energy

Which molecule is involved in the Q cycle within the electron transport chain?

• Plastoquinone

• Ubiquinone

• Cytochrome c

• NADP+