Microbial use of carbon and central metabolic pathways

Phosphorylation is important in microorganisms. Which following statement describes phosphorylation? (ribbit)

• ATP = ADP + P

• NAD + H = NADH

• ADP + P = ATP

Photoheterotrophs use _____ as their energy source.

• iron

• light

• carbon dioxide

• glucose

Some chemoautotrophs can use _____ as their energy source.

(Hint: an example of a chemoheterotroph is iron bacteria)

• iron

• light

• oxygen

• glucose

MOST Chemoheterotrophs use _____ as their energy source.

• carbon dioxide

• hydrogen

• light

• glucose

Anaerobic bacteria may use ____ as the final electron acceptor during anaerobic respiration.

• oxygen

• nitrate, sulfate, and nitrite

• calcium, helium, and argon

• argon, nitrate, and sulfate

Pyruvic Acid is a product of ____.

• glycolysis

• fermentation

• the TCA (Citric Acid/Krebs) cycle

• the pentose phosphate pathway

Fermentation is used by microorganisms when oxidative phosphorylation does not occur. Which molecule acts as the final electron acceptor in fermentation?

• NADH

• ATP

• lactic acid

• pyruvate

In microbial oxidative phosphorylation, what is the final electron acceptor?

Substrate level phosphorylation uses ____ as a phosphate donor.

• inorganic molecules like carbon dioxide

• organic molecules

• hydrogen ions

• sulfate

Where is the electron transport chain is located in prokaryotes (like bacteria)?

• cytoplasm

• nucleus

• cytoplasmic membrane

• mitochondria