unit 4 cc5

Play an AI-generated podcast conversation about this lesson

What are the two main types of fermentation?

Alcohol fermentation and Lactate fermentation

Which microorganisms carry out alcohol fermentation?

Yeasts and some bacteria

What is the Pasteur effect?

The phenomenon in which fermentation is inhibited by the presence of oxygen

Who first observed the Pasteur effect?

Louis Pasteur Signup and view all the answers

What are the two main types of lactate fermentation?

Homofermentative and Heterofermentative Signup and view all the answers

What are the products of homofermentative pathways?

Only lactate Signup and view all the answers

What are the products of heterofermentative pathways?

Lactate and other organic molecules, such as ethanol and carbon dioxide Signup and view all the answers

What are the characteristics of linear fermentation pathways?

They have a single starting point and a single end point Signup and view all the answers

What are the characteristics of branched fermentation pathways?

They have multiple starting points and/or multiple end points Signup and view all the answers

Why do microorganisms switch to fermentation when oxygen is not present?

To produce energy Signup and view all the answers

What is anaerobic respiration?

Anaerobic respiration is a type of respiration that does not require oxygen. Signup and view all the answers

Name three types of microorganisms that carry out anaerobic respiration.

Bacteria, archaea, and fungi. Signup and view all the answers

What is the importance of anaerobic respiration in the environment?

It helps to break down organic matter and recycle nutrients. Signup and view all the answers

What is dissimilatory nitrate reduction?

It is a type of anaerobic respiration that uses nitrate as the electron acceptor. Signup and view all the answers

What is nitrate and where is it found?

Nitrate is a form of nitrogen found in soil and water. Signup and view all the answers

Name the three main types of dissimilatory nitrate reduction.

Nitrate/nitrite respiration, nitrate/ammonia respiration, and fermentative nitrate reduction. Signup and view all the answers

What is the end product of dissimilatory nitrate reduction in the process of nitrate/nitrite respiration?

Nitrogen gas. Signup and view all the answers

What is the end product of dissimilatory nitrate reduction in the process of nitrate/ammonia respiration?

Nitrogen gas. Signup and view all the answers

What is the end product of dissimilatory nitrate reduction in the process of fermentative nitrate reduction?

Organic molecules. Signup and view all the answers

What is fermentation?

Fermentation is a type of anaerobic respiration that does not use an electron acceptor and produces organic molecules. Signup and view all the answers