What Do Sulfur Bacteria Use as a Source of Electrons

question 52

Multiple Choice

What do sulfur bacteria use as a source of electrons in photosynthesis?

• A)hydrogen sulfide
• B)water
• C)hydrogen sulfite
• D)carbon dioxide
• E)glucose

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Definitions:

Fossil Record

The collection of physical remains of organisms from the past, preserved in Earth's crust, which provides evidence of the history of life.

Microorganisms

Tiny living organisms, such as bacteria, viruses, and fungi, that can be seen only with a microscope.

Cambrian Explosion

The Cambrian Explosion was a significant event in the Earth's history approximately 541 million years ago, during which most major animal phyla appeared in the fossil record over a relatively short period.

Ocean Chemistry

The study of the chemical composition and properties of seawater, including the cycles and distribution of chemical elements and their compounds within the ocean.