A Primary Difference Between Cyanobacteria and Purple and Green Phototrophic

question 25

Multiple Choice

A primary difference between cyanobacteria and purple and green phototrophic bacteria is

• A) Energy source.
• B) Color.
• C) Cell wall type.
• D) Electron donor for CO₂ reduction.
• E) Cell type.

---

Definitions:

Growing Perpetuity

A series of cash flows that grow at a consistent rate indefinitely.

Growing Annuity

A series of periodic payments that grow at a constant rate and are received for a finite number of periods.

Perpetuity

A type of annuity that pays a fixed amount of money to an investor at regular intervals indefinitely.

Present Value

Present value is the current worth of a future sum of money or stream of cash flows given a specified rate of return, reflecting the time value of money.