Q2: Fermentation

Question 1

It is a way of harvesting chemical energy without using either oxygen or any electron transport chain—in other words, without cellular respiration.

Answer 1

Fermentation

Question 2

In ________ fermentation, ____________is converted to ethanol (ethyl alcohol) in two steps.

Answer 2

1. Alcohol
2. Pyruvate

Question 3

The first step releases ____________ from the pyruvate, which is converted to the ________-carbon compound acetaldehyde.

Answer 3

1. carbon dioxide
2. two

Question 4

In the second step, acetaldehyde is reduced by ________ to ethanol.

Answer 4

NADH

Question 5

The CO2 bubbles generated by ________ during alcohol fermentation allow bread to rise.

Answer 5

baker’s yeast

Question 6

During ____________ fermentation, pyruvate is reduced directly by NADH to form lactate as an end product, with no release of CO2.

Answer 6

lactic acid

Question 7

ionized form of lactic acid

Answer 7

Lactate

Question 8

What industry can lactic acid be used?

Answer 8

Dairy Industry

Question 9

What is the commercial products made from the Acetone-butanol- ethanol pathway?

Answer 9

Commercial solvents gasoline alternatives

Question 10

A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.

Answer 10

Reduction

Question 11

A metabolic reactions and processes that take place in the cells of organisms that use electron acceptors other than oxygen

Answer 11

Anaerobic respiration