Enzymes And Food Tests Flashcards

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1
Q

What is the name of the chemical used to test for starch?

A

Iodine solution

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2
Q

What colour indicates a positive test for starch using iodine solution?

A

Blue or black

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3
Q

What chemical is used to test for sugar?

A

Benedicts

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4
Q

What colour indicates a positive test for sugar?

A

Brick red

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5
Q

What chemical is used to test for protein?

A

Biuret

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6
Q

What colour indicates a positive test for protein?

A

Lilac

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7
Q

Name the enzyme which breaks down starch

A

Amylase

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8
Q

Enzymes are also known as…

A

Biological catalysts

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9
Q

If an enzyme is denatured, the active site on the enzyme changes shape so that…

A

The substrate cannot bind.

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10
Q

Name the enzyme which breaks down protein

A

Protease

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11
Q

What does the ‘optimum pH’ mean?

A

The pH where the rate of reaction is the fastest

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12
Q

Name the enzyme which breaks down fats

A

Lipase

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13
Q

During a reaction, an enzyme will break down the substrate to form…..

A

Products

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14
Q

What are lipids digested into?

A

fatty acids and glycerol

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15
Q

What is starch broken down into?

A

glucose

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16
Q

What is the product(s) of protein digestion?

A

Amino acids

17
Q

An enzyme will bind to a substrate to form ….

A

Enzyme-substrate complex

18
Q

What happens to enzymes when they get too hot?

A

The active site changes shape and become denatured

19
Q

Name the region that a substrate binds to.

A

Active site

20
Q

What is an enzyme made out of?

A

Protein