Exam 4 Study Guide 2

Which of the following correctly describes the role of cytochrome c in the electron transport chain?

• Cytochrome c transfers electrons directly to ATP synthase

• Cytochrome c transfers electrons from NADH dehydrogenase to cytochrome c reductase

• Cytochrome c is a mobile electron carrier between cytochrome c reductase and cytochrome c oxidase

• Cytochrome c accepts electrons from ubiquinone and donates them to NADH dehydrogenase

Which is NOT a part of the main classes of cell surface receptors?

• Ion channel couple

• Na+ K+ pump

• G protein couple

• Enzyme coupled

In the mitochondria, what is the primary purpose of cristae?

• Maintain the mitochondrial shape

• Break down old cells

• Store genetic information

• Increase the surface area of the inner membrane

• Both A and D

Which of the following is correct about G-proteins?

• They are activated by GDP binding

• They are activated by α binding

• They are activated by β binding

• They are activated by GTP binding

Which of the following is the correct order of events an electron goes through when going through the electron transport chain in the chloroplast?

• Photosystem I, Photosystem II, Cytochrome b6-f, NADP Reductase

• Photosystem II, Cytochrome b6-f, Photosystem I, NADP Reductase

• Photosystem I, Cytochrome b6-f, Photosystem II, NADP Reductase

• Photosystem II, Photosystem I, Cytochrome b6-f, NADP Reductase

Where do dark reactions get the energy (ATP and NADPH) for the reactions?

• oxidative phosphorylation

• electron transport chain

• light reactions

• the Calvin Cycle

Rank the order of electron affinity from lowest to highest.

• Ubiquinone, Cytochrome C, NADH, NADH dehydrogenase, Cytochrome C reductase, Cytochrome C oxidase, Oxygen

• NADH, Cytochrome C, Cytochrome reductase, Cytochrome C oxidase, NADH dehydrogenase, Ubiquinone, Oxygen

• Cytochrome C, Cytochrome C reductase, Cytochrome C oxidase, NADH, NADH reductase, Oxygen, Ubiquinone

• NADH, NADH dehydrogenase, Ubiquinone, Cytochrome C reductase, Cytochrome C, Cytochrome C oxidase, Oxygen

Which Class of cell surface receptors involves the release of GDP and the binding of GTP?

• Ion Channel-Coupled

• GTP Hydrolysis

• G-Protein-Coupled

• Enzyme-Coupled

What does NADH dehydrogenase do in electron transport?

• Accepts electrons from NAD+

• Accepts electrons from NADH

• Rejected electrons from NADH

• Rejects electrons from NAD+

In photosystem 2, the enzyme complex strips four ______ from ______.

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