In Cellular Respiration,electrons Are Moved Along a Series of Membrane

question 24

Multiple Choice

In cellular respiration,electrons are moved along a series of membrane proteins during the electron transport chain.If there was a mutation in the DNA coding for each of the proton pumps of the electron transport chain such that these proteins became non-functional,what would you predict to occur?

• A)Protons would not be moved from the matrix to the intermembrane space and so ATP synthase would not be activated.
• B)Protons would no longer be moved from the intermembrane space to the matrix and so ATP synthase would not be activated.
• C)NADH and FADH₂ would have to donate their electrons directly to ATP synthase in order for ATP synthesis to occur.
• D)All electrons would have to be stripped from water instead of NADH and FADH2 to create the proton gradient needed to power ATP synthase.

Understand the terminology related to ear anatomy and diseases.

Identify ear-related diagnostic and therapeutic procedures.

Familiarize with preventive measures for hearing loss.

Identify the anatomical structures of the eye and their functions.

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Definitions:

Contribution Margin

The selling price per unit minus the variable cost per unit, which helps determine how much sales contribute to covering fixed costs and generating profit.

Variable Costs

These are costs that vary directly with the level of production or sales volume, such as raw materials and direct labor costs.

Fixed Costs

Costs that do not change with the level of goods or services produced within a certain range; such costs are incurred regardless of business activity levels.

Break-even Point

The point at which total income matches total costs, leading to a situation where there is no gain or deficit.