Recall That Cyanobacteria May Have Developed as a Result of Transfer

question 91

Multiple Choice

Recall that cyanobacteria may have developed as a result of transfer of genetic material: a bacterium carrying the genetic information for one photosystem received (from another bacterium) the genetic information for a second, distinct photosystem. What might be possible mechanisms of action for genetic transfer?

• A)Bacteria could take up genetic information (released from dead bacteria)from their surroundings.
• B)Bacteria may exchange genetic information through the development of cytoplasmic connections.
• C)Bacteria may become infected by a virus that carries genetic information taken from previously infected bacteria.
• D)All of these choices are correct.

---

Definitions:

Norepinephrine

A neurotransmitter and hormone involved in the body’s fight-or-flight response, affecting attention, heart rate, and blood pressure.

Catastrophic Thinking

An irrational thought process leading an individual to believe that something is far worse than it actually is, often seen in anxiety and depression.

Bodily Sensations

Physical feelings or perceptions resulting from the condition of the body or its parts.

Hypersensitive Fight-Or-Flight

An exaggerated response to stress or perceived threats, where the body's natural fight-or-flight response is more easily triggered or more intense than normal.