The Enzyme Nitrogenase Is Inhibited by Oxygen

question 35

Multiple Choice

The enzyme nitrogenase is inhibited by oxygen. Which of the following does NOT protect nitrogenase from oxygen?

• A) special thick-walled cells (heterocysts) in filamentous cyanobacteria, such as Anabaena
• B) special nitrogenase-protecting proteins in Azotobacter species
• C) temporal separation of nitrogen fixation (at night) and photosynthesis (during the day) in some species of cyanobacteria
• D) growth under aerobic conditions
• E) growth under anaerobic conditions

Understand and apply the high-low method to estimate fixed and variable cost components.

Calculate the total cost to manufacture a certain number of units.

Determine the variable cost per unit.

Analyze and predict a competitor's cost structures including variable cost per unit and total fixed costs.

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Definitions:

Coordinated Patterns

Organized behaviors or actions among individuals or groups that are synchronized to achieve a common goal.

Old-Timers

A term referring to people who have a lot of experience or have been in a particular area or field for a long time.

Retroactive Pessimism

The tendency to retrospectively view past events more negatively once an outcome is known, particularly if the outcome is undesirable.

Team Successes

these are accomplishments or achievements attained by a team as a result of its collective effort and cooperation.