Biology Final Practice

Enzymes are considered to be 

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid

Tags

NGSS.MS-LS1-7

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

What makes an enzyme substrate specific?

• Size
• Shape
• Name
• Location it is found in

How do enzymes increase the speed of chemical reactions?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-5

can a change in pH alter the active site of an enzyme

• yes
• no

Which of these is NOT true?

• Enzymes can denature (change shape) when the temperature gets too high.
• Enzymes can only be used once in a chemical reaction. 
• Extreme pH can denature enzymes.
• Enzymes speed up chemical reactions. 

Tags

NGSS.HS-PS1-5

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusablility
• denaturation
• specificity
• fragility

Lactose intolerance is caused by...

• an infection

• a bite of a mosquito

• Deficiency of enzymes that metabolize carbohydrates

Lactase breaks up lactose into glucose and galactose. What can scientist measure to see if lactase is present?

• Blood glucose levels

• How much milk a person can drink

• How fast a person can drink milk

• Blood lactase levels