Which Microbial Grouping Is the Major Oxygenic Phototroph in Most

question 11

Multiple Choice

Which microbial grouping is the major oxygenic phototroph in most salt lakes?

• A) cyanobacteria
• B) Dunaliella, a eukaryotic alga
• C) halophilic Archaea
• D) purple nonsulfur bacteria

---

Definitions:

Aversive Event

An unpleasant or painful stimulus that induces changes in behavior through negative reinforcement or punishment.

Inappropriate Behavior

Actions or responses that are unsuitable or not fitting for the context or situation in which they occur.

Punishment Schedules

The rules or structures that determine the frequency and timing of punishment in the context of behavior modification.

FR-1

A fixed-ratio 1 schedule in operant conditioning, where reinforcement is given after every correct response.