QUIZ 4

What is the first step of cellular respiration?

• Electron transport chain

• Krebs cycle

• Glycolysis

• Tricarboxylic acid cycle

Which stages of cellular respiration do not require ATP?

• The electron transport chain is the only stage that does not require ATP.

• Citric Acid Cycle (CAC) is the only stage that does not require ATP.

• Glycolysis and Electron Transport Chain are the only stages that do not require energy.

• Glycolysis is the only stage that does not require ATP.

In glycolysis, glucose is broken down to synthesize what?

• ATP

• NADH

• Pyruvate

• Carbon dioxide

Which of the following pairs of molecules are involved in various stages of cellular respiration as electron donors in their reduced forms?

• FAD+ and NADH

• FADH2 and NADH

• FADH2 and NAD+

• FAD+ and NAD+

What is the primary function of ATP synthase in the electron transport chain?

• It moves electrons via a carrier protein.

• It uses GTP to move electrons.

• It facilitates the movement of electrons down their concentration gradient without needing additional energy.

• It acts as a pump powered by ATP to move electrons.

Diabetes is primarily caused by issues in regulating which of the following levels in the blood?

• Insulin

• Glucose

• Glycogen

• ATP

Fill in the blank for the chemical formula of PHOTOSYNTHESIS: CO2 + _____ ===> C6H12O6 + O2

Where in the cell does glycolysis take place?

• Within the inner membrane of the mitochondria (in the walls)

• In the cytoplasm

• In the chloroplast

• Inside the mitochondria's inner fluid

What is the product of the Transition step? (What is the starting material for Krebs?)

• Pyruvic Acid

• Acetyl-CoA

• Tricarboxylic Acid

• Pyruvate

Why are cyanide molecules deadly when ingested in the context of cellular respiration?

• Cyanide molecules block one of the integral membrane proteins involved in the electron transport chain, preventing ATP production.

• Cyanide molecules trigger the Donnelly-Barham Cascade, inhibiting the formation of new NAD+ and FAD+ molecules.

• Cyanide is corrosive to CoEnzyme A, preventing the transition step in cellular respiration.

• Cyanide directly inhibits the function of the lungs and diaphragm.