What are the properties of enzyme

Question 1

What are the primary role of an enzyme?

Answer 1

• An enzyme acts as a catalyst influencing the rate of metabolism
• They are usually specific which means they only influence one type of reaction,
• and can be inflluenced by changes in pH and Temperature
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Question 2

What happens when an enzyme is involved in a reaction

Answer 2

When enzymes are involved in a reaction:

They combine with their substrates to form enzyme substrate complexes.

Only a small amount of enzyme is needed to catalyse a high amount of substrate

Then when the reaction is completed, the products are released…and the enzyme returns to its normal state

Question 3

Where do reactions occur

Answer 3

• Intracellular - Catalase
• Extraceullar - Amylase, Trypsin

Question 4

How quick is the enzyme reaction?

Answer 4

Enzymes are fast acting, they are described as having a fast turnover rate i.e. (The rate at which an enzyme can convert many molecules of substate per unit time)

Question 5

What is a fast turnover rate

Answer 5

(The rate at which an enzyme can convert many molecules of substate per unit time)

Question 6

What are two factors which can influence enzymes

Answer 6

1. Changes in pH
2. Changes in Temperature

Question 7

Do all enzymes work on their own

Answer 7

• No
• On some occassions they combine with other chemical (Cofactor)

Question 8

What chemical slows or stops an enzyme catlysed reaction

Answer 8

• An inhibitor

Question 9

What are the properties of an enzyme

Answer 9

• Specific - only perform one reaction
• When a reaction occurs
• Where do they occur
  
  • Intracellular e.g. catalase
  • Extracellular e.g. Amuase or trypsin
• Only a Small amount needed
• They are high fast acting (Turnover number)
• Chemical co factor
• Slow stop the reaction - inhibitor
• Changes in temperature and pH