Measurements Show That the PH of a Particular Lake Is

question 18

Multiple Choice

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

• A) 4.0M
• B) 10-10M
• C) 10-4M
• D) 104M

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Definitions:

Photoautotrophs

Organisms that carry out photosynthesis to produce glucose and other organic compounds from carbon dioxide and water using light energy.

Land Plants

Plants that have adapted to live primarily on land, including a wide range of flora from grasses to trees.

Algae

An informal group of unicellular, or simple multicellular, photosynthetic protists that are important producers in aquatic ecosystems.

Thylakoid Membranes

Membrane-bound compartments inside chloroplasts and cyanobacteria where photosynthesis takes place.