Enzymes Flashcards
1
Q
Explain why starch is a more suitable storage substance than glucose.
A
- Starch is a large molecule that cannot pass the cell membrane making it insoluble
2
Q
Describe and explain how pH and temperature affects enzyme activity
A
pH: Substrate no longer fits
- Active site changes shape
- Denaturation and pH is not optimum
Temperature: Increase in temperature, increases the rate of reaction
- Heat increases kinetic energy
- More collisions at a higher temperature
3
Q
Name 1 enzyme in a named part of the alimentary canal and describe their role in digestion.
A
- Carbohydrates like starch are broken down by Amylase in the mouth and then converted into glucose.
4
Q
Explain why enzymes are necessary for biological processes
A
- Without enzymes, reactions occur too slowly
- reactions take place at lower temperatures
- Enzymes are catalysts