Exam 13: Metabolic Diversity of Microorganisms

What products would be expected to form during anoxic degradation of the seven-carbon compound benzoate following reduction and cleavage of the aromatic ring?

The path of electron flow in oxygenic phototrophs is referred to as the ________ scheme.

What would likely occur if an anammox bacterium was unable to use ladderane lipids?

In what types of organisms are carboxysomes found and what advantage do they provide for a cell?

Anaerobic fermentation often provides CO₂,which can be used by ________ as an electron acceptor for energy.

Under what circumstances does oxygenic photophosphorylation use non-cyclic photophosphorylation and when does it use cyclic photophosphorylation? Also describe what occurs during each process.

Some sulfur-oxidizing bacteria can simultaneously reduce nitrate,which enables them to grow anaerobically.

What metabolic advantage do cells have in storing the elemental sulfur byproduct from sulfide oxidation?

Bacteriochlorophyll and chlorophyll contain ________ as a cofactor.

Intracytoplasmic membrane systems housing vesicles known as chromatophores,which function in photosynthesis,are commonly found in

The process by which electrons from the quinone pool are forced against the thermodynamic gradient to reduce NAD⁺ to NADH is called reverse

What metabolism would be favored when there is a lack of electron acceptors?

Which of the following is NOT a potential reason anoxic methane-oxidizing Archaea have not also acquired the ability to reduce sulfate?

A monooxygenase can always be distinguished from a dioxygenase by incorporating only one oxygen atom from O₂ into the substrate rather than both.

Which of the following are NOT found within the photosynthetic gene cluster of Rhodobacter (a purple phototrophic bacterium)?

The serine pathway and ribulose monophosphate pathway can both be used by ________ as a way to incorporate carbon into biomass.

Ferrous iron (Fe²⁺)oxidation generally occurs in environments with

Two separate photosystems involved in electron flow is a hallmark of

The metabolic diversity of photosynthetic bacteria stems from different

Fermentation of organic compounds,such as acetate,produces NADH and ATP.