Cyanobacteria Have __________-Based Photosynthesis and Are the Only __________-Producing Bacteria

question 62

Multiple Choice

Cyanobacteria have __________-based photosynthesis and are the only __________-producing bacteria.

• A) H₂S; S⁰
• B) Mg²⁺; NO
• C) H₂O; O₂
• D) succinate; O₂
• E) none of the above

---

Definitions:

Phosphorus

A chemical element with the symbol P and atomic number 15, essential for life, involved in various biological processes, including energy transfer and the formation of bones and teeth.

Trace Element

An element required by an organism in very small amounts.

Iron

A metallic element essential for human life; involved in oxygen transport within the bloodstream.

Obesity

Excess accumulation of body fat; a person is considered obese if the body mass index (BMI) is 30 or higher.