Exhibit 2A the Structure of ATP with Various Groups Labeled

question 47

Multiple Choice

Exhibit 2A The structure of ATP with various groups labeled. Group III is the entire phosphate group.
Refer to Exhibit 2A. Which of the functional groups cannot function as a hydrogen donor to water?

• A) I
• B) II
• C) III
• D) IV
• E) All can donate a hydrogen to water.

---

Definitions:

Absolute Threshold

The minimum intensity of a stimulus that one can detect 50% of the time, reflecting the lowest level of sensory input that is perceptible.

Difference Threshold

The minimum difference in stimulation required to distinguish between two stimuli.

Absolute Threshold

The lowest level of a stimulus that can be perceived half the time by an individual.

Hearing Test

A procedure used to evaluate a person's ability to hear various sounds, frequencies, and volumes, typically conducted by an audiologist.