Fermentation

Why is yeast used to bake bread?

• The product gas, CO_2, makes bread rise

• The ethanol produced makes bread dangerous

• The bacteria consumes O₂, causing bread to rise

• The yeast produces lactic acid.

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How are lactic acid and ethanol fermentation similar?

• They have the same products (CO₂)

• They have the same reactant (glucose)

• They both require oxygen

• They occur in the same organisms

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Fermentation is a process that requires a microorganism to produce a by-product. Choose all examples of microorganisms below used in ethanol or lactic acid fermentation.

• bacteria

• yeast

• mold

• protists

Which type of fermentation uses the microorganism, yeast?

• ethanol fermentation

• lactic acid fermentation

Which type of fermentation uses the microorganism, bacteria?

• ethanol fermentation

• lactic acid fermentation

Which type of fermentation uses glucose sugar as a reactant?

• ethanol fermentation

• lactic acid fermentation

• both types

• neither type

Which type of fermentation produces ethanol as one of the products?

• ethanol fermentation

• lactic acid fermentation

• both types

• neither type

Which type of fermentation produces carbon dioxide as one of the products?

• ethanol fermentation

• lactic acid fermentation

• both types

• neither type

Which type of fermentation produces lactic acid as one of the products?

• ethanol fermentation

• lactic acid fermentation

• both types

• neither type

Which type of fermentation uses its products to create items like dairy and cheese?

• ethanol fermentation

• lactic acid fermentation