Peptidoglycan

question 22

Multiple Choice

Peptidoglycan

• A) may be digested by penicillin.
• B) consists of a long string of NAG coupled to a long string of NAM.
• C) may be digested by lysozyme.
• D) is found in bacteria, archaea, and plants.
• E) is only found in Gram-positive cells.

---

Definitions:

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a period of rest and with no further conditioning.

Addiction

A chronic, relapsing disorder characterized by compulsive drug seeking, continued use despite harmful consequences, and long-lasting changes in the brain.

Psychological Addiction

A dependency of the mind leading to compulsive engagement in rewarding stimuli despite adverse consequences.

Biological Addiction

A dependency on substances due to changes in brain chemistry and function, leading to compulsive use despite harmful consequences.