Question

Question 1

FERMENTATION IN YEAST

Where, in a yeast cell, does fermentation take place?

Group of answer choices

in the cytoplasm

in the mitochondria

in the chloroplast

in the rough ER

in the alveolar spaces

Question 2

FERMENTATION IN YEAST

Fermentation is a metabolic pathway that allows for the manufacture of small amounts of ATP when oxygen is not available.

What is the function of fermentation?
(in other words, what happens during fermentation, to allow for ATP production)

Group of answer choices

The fermentation reaction manufactures a large amount of both carbon dioxide and ethyl alcohol; molecules that are useful to humans and the yeast that produce them.

The fermentation reaction results in a small amount of ATP, which the yeast can use for cellular work.

The fermentation reaction prepares carbohydrate molecules for other biological reactions that maximize the harvest of energy from food and the making of ATP.

The fermentation reaction allows for a continued supply of NAD+ so the harvest of food energy can continue.

Question 3

FERMENTATION IN YEAST

What type of fermentation is carried out by yeast?

Group of answer choices

lactic acid fermentation

citric acid fermentation

electron transport fermentation

pyruvic acid fermentation

ethyl alcohol fermentation

Question 5

CHEMICAL ENERGY (and a review of biological chemistry)

Metabolic pathways describe energy transfer reactions. With fermentation, the chemical energy in food is used to produce small amounts of ATP.

The food for this kitchen lab experiment was 'table sugar'. See the lab instructions for what type of molecule "table sugar" is. You may also need to look up additional information about "table sugar" online.

Which of the following are characteristics that accurately describe 'table sugar'? (choose all that apply)

Group of answer choices

Table sugar is a complex carbohydrate

Table sugar is a disaccharide

Table sugar is a protein

Table sugar includes a glucose monomer bonded to a fructose monomer

Table sugar is a monosaccharide

Table sugar's chemical name is sucrose

Table sugar is a carbohydrate

Question 13

Can humans ever resort to fermentation to produce ATP?

Group of answer choices

Yes: lactic acid fermentation or ethyl alcohol fermentation occur in humans.

No: fermentation is observed only in microorganisms and is not a metabolic option for larger organisms like humans.

Yes: lactic acid fermentation produces small amounts of ATP during strenuous exercise.

Yes: ethyl alcohol fermentation produces small amounts of ATP during strenuous exercise.

No: it is not possible for humans to survive with the small amounts of ATP produced during fermentation; evolution has led to our adaptation to an oxygen rich environment and a more effective respiration method.

Question 18

CELLULAR WORK IN PLANTS

Plants need ATP for cellular work, just like yeast and animals do.
Of the following, which most accurately describes how the ATP for cellular work is produced in plants?

Group of answer choices

Plants use photsynthesis to make food, but they do not require ATP for cellular work.

Plants use cellular respiration, and mitochondria, to make the ATP used for cellular work.

Plants use ethyl alcohol fermentation to make the ATP used for cellular work.

Plants use photosynthesis, and the chloroplast, to make the ATP used for cellular work.

Answer 1

1. Fermentation takes place in cytoplasm.

explanation ---

Fermentaion is an anaerobic process which occur in the absence of oxygen in the cytoplasm which converts pyruvic acid into lactic acid or ethyl alcohol

If oxygen is present pyruvate enters the mitochondria to enter into krebs cycle.

Chloroplast is plant organ which carry photosynthesis

Rough endoplasmic reticulum posses ribosomes which synthesis proteins

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2. The fermentation reaction manufactures a large amount of both carbon dioxide and ethyl alcohol; molecules that are useful to humans and the yeast that produce them.

Explanation------

Fermentation occurs in absence of oxygen by yeast cells where ATP produced are used up by the yeast cells for their cellular respiration process. The carbon dioxide produced by yeast cells helps human in the production of fermented food products like breads, cheese, carbonated drinks and yogurt. These products are consumed by humans. Alcohol produced help poduce alcoholic beverages.

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3. ethyl alcohol fermentation is carried out by yeast

Explanation---

Yeast ferment in absence of oxygen to produce ethanol and carbon dioxide. Therefore, ethyl alcohol fermentation occurs.

Lactic acid fermentation occurs in human muscle cell in absence of oxygen.