American Meteorological Society Certification (AMS) Practice 2025 - Free Practice Questions and Study Guide

Question: 1 / 400

Which of the following is a primary function of cyanobacteria?

Breaking down organic material

Producing glucose through photosynthesis

Cyanobacteria are a crucial component of ecosystems due to their ability to perform photosynthesis, converting sunlight into energy. Through this process, they take in carbon dioxide and water, using light energy to produce glucose and oxygen. This function not only sustains the cyanobacteria themselves but also forms the basis of the food web for many aquatic and terrestrial organisms. The glucose produced serves as a vital energy source for various forms of life, highlighting the importance of cyanobacteria in both energy production and as contributors to oxygen in the atmosphere. This capacity for photosynthesis establishes them as significant primary producers in many environments, especially in aquatic systems.

Other options, while related to the biological role of some microorganisms in nature, do not accurately capture the primary function of cyanobacteria in the context provided.

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Creating nitrogen gas in the atmosphere

Consuming carbon dioxide

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