PASS W6 Content

Which of the following is not an example of an autotroph?

• Cyanobacteria

• Sulfur-oxidizing bacteria

• Animals

• Vascular plants

Which organism would most likely be found near hydrothermal vents, using inorganic molecules as an energy source?

• Photoautotroph

• Chemoautotroph

• Chemoheterotroph

• Photoheterotroph

Which of the following is the correct sequence of the four major steps of cellular respiration?

• Glycolysis → Citric Acid Cycle → Oxidative Phosphorylation → Pyruvate Oxidation

• Glycolysis → Pyruvate Oxidation → Citric Acid Cycle → Oxidative Phosphorylation

• Glycolysis → Oxidative Phosphorylation → Pyruvate Oxidation → Citric Acid Cycle

• Pyruvate Oxidation → Glycolysis → Citric Acid Cycle → Oxidative Phosphorylation

Which stage of cellular respiration directly produces the most ATP?

• Glycolysis

• Pyruvate Oxidation

• Citric Acid Cycle

• Oxidative Phosphorylation

ATP is not used in which of the following processes?

• Muscle contraction

• Active transport

• DNA replication

• Osmosis

Where does glycolysis occur in eukaryotic cells?

• Mitochondrial matrix

• Cytoplasm

• Intermembrane space

• Inner mitochondrial membrane

Which step of aerobic respiration is absent in anaerobic respiration?

• A. Glycolysis

• B. Pyruvate oxidation

• C. Citric acid cycle

• D. Oxidative phosphorylation

• E. All of the above except A

In aerobic respiration, which molecule is the final electron acceptor?

• NAD+

• Glucose

• Carbon dioxide

• Oxygen

What is substrate-level phosphorylation?

• The synthesis of glucose from pyruvate.

• Transfer of a phosphate group from an organic molecule to ADP.

• Use of proton gradient to power ATP synthesis.

• Oxidation of NADH and FADH₂.

What role do NAD+ and FAD play in cellular respiration?

• They donate phosphate groups.

• They act as electron carriers.

• They synthesize glucose.

• They are components of ATP synthase.