AQA Biology Paper 1- Health, Disease and Enzymes

Something capable of spreading disease without being infected itself (rats, mosquitoes, soil parasites)

• Vector

• Hazard

• Virus

• Infection

A rapidly spreading outbreak of disease affecting widespread regions across the world ( ex: smallpox, TB, certain flu outbreaks)

• Epidemic

• Pandemic

• Protozoa

• Bacteria

Q Enzymes are able to do what to molecules?

• A build them up and break them down
• B build them up but not break them down
• C not build them up but break them down
• D not build them up and break them down

Q Which of these are proteins broken down into?

• A Amino acids
• B Fatty acids
• C Glycerol
• D Simple sugars

Q which of these is true for an enzyme reaction?

• A the substrate stays the same and enzyme changes
• B the substrate changes and the enzyme changes
• C the substrate stays the same and the enzyme stays the same
• D the substrate changes and the enzyme stays the same

Q Enzymes do not work well above certain temperatures because

• A The active site stays the same shape
• B The active site changes shape
• C They die
• D The substrates move too quickly

Q Increasing the temperature of an enzyme catalysed reaction does what to the rate of reaction?

• A increases the rate of reaction exponentially
• B decreases the rate of reaction
• C increases the rate of reaction to a point

Q What do enzymes do above their optimum temperature?

• A Die
• B Work faster
• C Denature
• D Work at the same rate

Q What do enzymes do below their optimum temperature as it decreases?

• A Denature
• B Die
• C Become inactive
• D Work at the same rate

Q What are statins used for?

• A Lowering blood pressure
• B Lowering heart rate
• C Lowering cholesterol
• D Stating cholesterol levels