Microbial Metabolism

An active enzyme may use which 3 of the following

• Apoenzyme

• acetyl Co A

• substrate

• Active site

• pyruvate

Uses Chemicals from food to convert glucose to ATP

• Chemoheterotroph

• Chemoautotroph

• photoheterotroph

• photoautotroph

Tags

NGSS.HS-LS1-7

Which of the following are products of the Kreb's Cycle

• NADPH

• NADH

• ATP

• FADH2

• Water

Methanogens are anaerobic archaea that produce what as a byproduct of their energy metabolism?

• Oxygen

• Methane

• Carbon dioxide

• Hydrogen

Tags

NGSS.HS-LS2-3

The combination of chemical reactions through

which an organism builds up or breaks down

materials as it carries out its life processes is called ...

• absorption

• metabolism

• digestion

• consumption

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

The process by which larger more complex substances are broken down into smaller simpler molecules.

• Catabolism

• Anabolism

The process by which larger more complex substances are broken down into smaller simpler molecules.

• Catabolism

• Anabolism

Tags

NGSS.HS-LS1-7

Anoxygenic photosynthesis is a special form of photosynthesis used by some bacteria and archaea that differs from oxygenic photosynthesis by using ________.

• Molecular oxygen

• Hydrogen sulfide instead of water

• Carbon dioxide

• Nitrogen

Which of the following pathways is the most efficient mechanism for bacterial cells to produce energy?

• Embden-Meyer-Parnas (EMP) pathway

• Pentose phosphate pathway

• Enter-Doudoroff (ED) pathway

• Krebs cycle

Answer explanation

The Embden-Meyer-Parnas (EMP) pathway is the most efficient energy production mechanism for bacteria, generating a higher yield of ATP compared to the other pathways listed.

Which of the following statements correctly describes fermentation processes in bacteria?

• Oxygen is the final electron acceptor

• It is less energy efficient than respiration

• It is used by obligate aerobes

• All bacteria produce the same products of fermentation

Answer explanation

Fermentation processes in bacteria are less energy efficient than respiration, as they do not fully oxidize substrates. Unlike respiration, fermentation does not use oxygen as the final electron acceptor, and products vary among bacteria.