Refer to Figure 9

question 78

Multiple Choice

Refer to Figure 9.2, showing the citric acid cycle, as a guide to answer the following questions.

-Recall that the complete oxidation of a mole of glucose releases 686 kcal of energy (ΔG = -686 kcal/mol) . The phosphorylation of ADP to form ATP stores approximately 7.3 kcal per mole of ATP. What is the approximate efficiency of cellular respiration for a "mutant" organism that produces only 29 moles of ATP for every mole of glucose oxidized, rather than the usual 36-38 moles of ATP?

• A)0.4%
• B)25%
• C)30%
• D)40%
• E)60%

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Definitions:

Specialized Cells

Cells that have developed unique characteristics and functions through the process of differentiation.

Absolute Threshold

The minimal intensity of a stimulus that is required to be detected 50% of the time.

Difference Threshold

The smallest difference in stimulation that can be reliably detected by an observer when two stimuli are compared; also called just noticeable difference (jnd).

Sensory Sensitivity

A condition where individuals are extremely responsive to environmental stimuli such as sounds, lights, and textures.