What affect does extremely high pH have on enzymes?
Denatures them
Speeds up reactions
Slows down reactions
What does the term optimum mean for enzyme temperature?
The lowest temperature at which the enzyme works
The temperature which gives the highest enzyme activity
The highest temperature before denaturing occurs
How many base pairs are in the human genome?
Four
20 thousand
Three billion
What type of enzymes break down fats?
Lipase
Carbohydrase
Protease
What molecules are used to copy DNA in protein synthesis?
mRNA
Hormones
Growth factors
What type of enzyme is amylase?
What are the four bases in DNA in their correct pairs?
C-T and A-G
G-C and T-A
G-C and U-A
Which statement is true of genes?
A gene is a short section of DNA that codes for a protein
A single molecule of DNA
Humans have 46 genes
Which of these statements about enzymes is true? - Higher
They work best at low pH
Temperature does not affect their activity
They can be reused
What is the correct calculation for the rate of an enzyme reaction? - Higher
Amount of substrate used / time taken
Amount of substrate used + time taken
Amount of substrate used x time taken