Bacteria Unveiled

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Questions and Answers

Which of the following statements about bacteria is true?

Bacteria are responsible for the decomposition of dead bodies. (correct)
Bacteria cannot survive in extreme environments.
Bacteria are eukaryotic microorganisms.
Bacteria are only found in water habitats.

What is the size range of bacteria?

Micrometres to millimetres
Nanometres to micrometres (correct)
Millimetres to centimetres
Centimetres to metres

Where can bacteria be found?

In various habitats such as soil, water, and hot springs (correct)
Only in soil and water
Only in radioactive waste
Only in the deep biosphere of Earth's crust

What is the role of extremophile bacteria in hydrothermal vents and cold seeps?

They convert dissolved compounds to energy. (A) Signup and view all the answers

What type of relationship can bacteria have with plants?

Both symbiotic and parasitic (D) Signup and view all the answers

What is the significance of bacteria in the nutrient cycle?

Bacteria play a vital role in many stages of the nutrient cycle by recycling nutrients and fixing nitrogen from the atmosphere. Signup and view all the answers

How do extremophile bacteria contribute to sustaining life in hydrothermal vents and cold seeps?

Extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Signup and view all the answers