Marine Microbes Flashcardziz

Front

What are marine microbes?

Back

Marine microbes are microscopic organisms that live in oceanic environments, including bacteria, archaea, viruses, and some eukaryotes.

Front

Which organisms are NOT classified as marine microbes?

Back

Plants are not classified as marine microbes.

Front

What percentage of the weight of all living organisms in the ocean is made up of microbes?

Back

90% of the weight of all living organisms in the ocean is made up of microbes.

Front

What is nitrogen-fixing in marine microbes?

Back

Nitrogen-fixing marine microbes convert atmospheric nitrogen into a usable form for other organisms.

Front

What is lysis in the context of viral infections?

Back

Lysis is the process of a cell bursting due to viral infection, releasing new viral particles.

Front

What is the basic structure of a virus?

Back

A virus consists of a protein casing (capsid) and genetic material (DNA or RNA).

Front

What role do bacteria play in marine ecosystems?

Back

Bacteria decompose organic matter, recycle nutrients, and are essential for nutrient cycling in marine ecosystems.

Front

What are archaea and their significance in marine environments?

Back

Archaea are a group of single-celled organisms that can survive in extreme conditions and play a role in biogeochemical cycles.

Front

How do viruses affect marine microbial communities?

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Viruses can regulate microbial populations by infecting and lysing cells, influencing nutrient cycling and community dynamics.

Front

What is the importance of phytoplankton in marine ecosystems?

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Phytoplankton are primary producers that convert sunlight into energy, forming the base of the marine food web.