Bacteria Review

Front

What is a plasmid?

Back

A plasmid is a small, circular piece of DNA found in bacteria that is separate from the chromosomal DNA and can replicate independently. Plasmids often carry genes that provide bacteria with genetic advantages, such as antibiotic resistance.

Front

What kingdom did the first living organisms likely belong to?

Back

The first living organisms probably belonged to the kingdom Archaebacteria, which includes ancient bacteria that thrive in extreme environments.

Front

What are thermoacidophiles?

Back

Thermoacidophiles are a type of extremophilic bacteria that thrive in highly acidic environments and at high temperatures, such as hot springs.

Front

What does the Greek root 'halo' mean?

Back

The Greek root 'halo' means 'salt'.

Front

What is the shape of spirillum bacteria?

Back

Spirillum bacteria are characterized by their spiral or corkscrew shape.

Front

Define the term 'extremophiles'.

Back

Extremophiles are organisms, including certain bacteria, that thrive in extreme environmental conditions, such as high temperature, acidity, or salinity.

Front

What is the difference between Archaebacteria and Eubacteria?

Back

Archaebacteria are ancient bacteria that often live in extreme environments, while Eubacteria are more common bacteria that can be found in a variety of environments.

Front

What is the function of ribosomes in bacteria?

Back

Ribosomes in bacteria are responsible for protein synthesis, translating messenger RNA (mRNA) into proteins.

Front

What are halophiles?

Back

Halophiles are a type of extremophilic bacteria that thrive in high-salt environments, such as salt lakes.

Front

What is the significance of the nucleoid in bacteria?

Back

The nucleoid is the region in a bacterial cell where the chromosomal DNA is located, and it is not surrounded by a membrane.