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Archaea Characteristics and Types

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Questions and Answers

What is the function of fimbriae in prokaryotes?

To obtain energy from light

To attach to suitable surfaces or to other individuals in a colony (correct)

To transfer genetic material

To facilitate locomotion

What is the term for prokaryotes that obtain energy from chemicals?

Chemotrophs (correct)

Phototrophs

Autotrophs

Heterotrophs

What is the term for the combination of obtaining energy from light and requiring CO2 as a carbon source?

Photoautotrophy (correct)

Chemoautotrophy

Chemoheterotrophy

Photoheterotrophy

What is the outermost layer of the cell wall in Gram-negative bacteria?

Outer membrane Signup and view all the answers

What is the term for the study of the genetic diversity of prokaryotes?

Phylogeny Signup and view all the answers

What is the function of the capsule in prokaryotes?

To enable adherence to substrates or to other individuals in a colony Signup and view all the answers

Which type of archaea produces methane as a waste product?

Methanogens Signup and view all the answers

Which group of bacteria includes photoautotrophs, chemoautotrophs, and heterotrophs?

Proteobacteria Signup and view all the answers

What characteristic do archaea share with eukaryotes?

Genetic material organization Signup and view all the answers

Which type of bacteria are parasites that live within animal cells?

Chlamydias Signup and view all the answers

What is a characteristic of gram-positive bacteria?

They have a cell wall Signup and view all the answers

Which subgroup of proteobacteria is NOT mentioned in the text?

Zeta Signup and view all the answers

What is the main function of the cell wall in prokaryotic cells?

To maintain cell shape and provide protection Signup and view all the answers

What is the main difference between Gram-positive and Gram-negative bacteria?

The thickness of the peptidoglycan layer Signup and view all the answers

What is the main component of bacterial cell walls?

Peptidoglycan Signup and view all the answers

What is the shape of bacilli?

Rod-shaped Signup and view all the answers

What is the purpose of the cell surface structures in prokaryotic cells?