Nitrogenase Is Diagrammed Below

question 22

Multiple Choice

Nitrogenase is diagrammed below. This particular enzyme is shown in the format just before it begins a cycle of nitrogen reduction. This goal is accomplished in four steps. What is the first step?

• A) N₂ gas binds to the active site on the FeMo protein.
• B) NADPH binds to the active site in order to reduce it prior to N₂ binding.
• C) Two e - are transferred to the Fe protein and then to the FeMo protein, which are used to reduce H+ to H₂ prior to N₂ binding.
• D) The preexisitng NH4+ is removed prior to N₂ binding.
• E) Fe and Mo are bound to the active sites and then released prior to the next cycle.

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Definitions:

Schizophrenia

A chronic mental disorder characterized by distortions in thinking, perception, emotions, language, sense of self, and behavior, often resulting in hallucinations, delusions, and reduced participation in daily activities.

Delusions

False beliefs held with strong conviction despite superior evidence to the contrary.

Critical

Involving the objective analysis and evaluation of an issue in order to form a judgment; essential for problem solving and decision making.

Personality Disorder

A type of mental disorder characterized by unhealthy pattern of thinking, functioning, and behaving, differing significantly from cultural norms.