IB Enzymes #1

What is structure D?

• substrate
• active site
• enzyme
• products

Which of the following is NOT a common misconception about enzymes?

• they are reusable
• there are only a few kinds of enzyme that work in our bodies
• an enzyme only facilitates one reaction and then it is broken down and reabsorbed
• enzymes make chemical reactions occur

Letter D is....

• active site
• enzyme
• substrate
• products

Letter C is ....

• active site
• enzymes
• substrate
• products

Which of the following is NOT true about enzymes?

• enzymes speed up chemical reactions
• enzymes react best at a specific temperature
• enzymes only control ONE type of reaction
• enzymes are made of polysaccharides

What can influence enzyme productivity?

• pH
• temperature
• both pH and temperature
• nothing influences enzyme productivity

What makes an enzyme substrate specific?

• size
• shape
• name
• location it is found in

What is the optimum pH of pepsin which is found in the stomach gastric juice of humans?

• pH 5
• pH 2
• pH 7
• pH 9

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
• Enzymes can denature when the pH changes
• Enzymes speed up chemical reactions 

Tags

NGSS.HS-LS1-7

What is broken down by the enzyme amylase, which is found in saliva?

• sugar
• starch
• oils
• protein