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Anaerobic Cellular Respiration Quiz

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Questions and Answers

Which of the following is a product of anaerobic cellular respiration when carbon dioxide is used as the terminal electron acceptor?

Methane (correct)

Hydrogen sulfide

Oxygen

Ethyl alcohol

What role do sulfate-reducing bacteria play in anaerobic respiration?

They produce carbon dioxide as a by-product.

They utilize sulfate as a terminal electron acceptor. (correct)

They absorb oxygen to facilitate energy generation.

They generate methane in the presence of nitrate.

Which of the following statements about anaerobic cellular respiration is true?

It exclusively uses oxygen as an electron acceptor.

It only occurs in eukaryotic organisms.

It produces less ATP compared to aerobic respiration. (correct)

It requires oxygen to function effectively.

Where are methanogens primarily found?

<p>In the digestive systems of ruminants</p> Signup and view all the answers

Which alternative electron acceptor is not mentioned as being used in anaerobic cellular respiration?

<p>Hydroxide</p> Signup and view all the answers

Study Notes

Anaerobic Cellular Respiration

Functions similarly to aerobic respiration but utilizes alternative electron acceptors instead of oxygen.
Common electron acceptors in anaerobic respiration include sulfate (SO42−SO_4^{2-}SO42−), nitrate (NO3−NO_3^-NO3−), and sulfur.

Prokaryotic Utilization

Certain prokaryotes, including bacteria and archaea, utilize anaerobic respiration to metabolize various fuels.
Methanogens are a type of archaea that use carbon dioxide (CO2CO_2CO2) as a terminal electron acceptor, producing methane (CH4CH_4CH4) as a by-product.
Methanogens are predominantly found in environments like soil and the digestive systems of ruminants, such as cows and sheep.

Sulfate-Reducing Bacteria

Sulfate-reducing bacteria and archaea utilize sulfate as their terminal electron acceptor.
The by-product of this process is hydrogen sulfide (H2SH_2SH2S), which can contribute to the characteristic smell of rotten eggs.

Environmental Implications

Coastal waters may exhibit blooms of sulfate-reducing bacteria, visibly presenting as large green patches.

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Description

Test your knowledge on anaerobic cellular respiration with this quiz. Explore key concepts, such as electron transport chains, alternative electron acceptors, and the roles of prokaryotes in this process. Get ready to challenge your understanding of microbial metabolism!