B2.5 Proteins Flashcards

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1
Q

What is an enzyme?

A

A biological catalyst made from protein.

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2
Q

What do biological catalysts do to the rate of reactions?

A

Speed them up without being changed or used up in the reaction.

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3
Q

Do enzymes speed up the rate of reactions? If so, why?

A

Enzymes do speed up the rate of reactions because they are biological catalysts.

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4
Q

What are enzymes produced by?

A

Living things.

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5
Q

Why do enzymes denature?

A

Enzymes denature because the temperature exceeds 60ºC or the pH levels change.

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6
Q

What are all enzymes (apart from biological catalysts)?

A

Proteins.

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7
Q

What are proteins made up of?

A

Chains of amino acids that are folded into unique shapes.

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8
Q

What do proteins act as?

A

Structural components of tissue, hormones and antibodies.

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9
Q

Evaluate the use of enzymes

A

Advantages- saves money in production cost and they make the reaction more efficient

Disadvantages- pure enzymes are very expensive to produce and they are very sensitive to conditions like pH and temperature

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10
Q

Name 4 foods which contain protein

A

Meats, eggs, beans and fish

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11
Q

Describe the uses of proteins in the body

A

Growth + repair

Cell repair and cell

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