Calculations + Formulas

Question 1

How do you calculate rate of enzyme activity?

Answer 1

1 / mean time

Question 2

How do you calculate rate of breakdown or production of a substance?

Answer 2

Change in volume or mass / time

Question 3

What is the formula for rate of transpiration?

Answer 3

Distance moved by air bubble / time

Question 4

What is the equation for total bacteria?
-what does ‘n’ mean?
-how do you calculate ‘n’?

Answer 4

Number of starting bacteria x 2^n
-‘n’ = number of divisions
-total time of growth / time for one division (minutes)

Question 5

How do you calculate area of inhibition?

Answer 5

Take 2 diameter measurements perpendicular to each other, then use the mean to calculate area

Question 6

How do you calculate efficiency?

Answer 6

Useful energy transferred / total energy supplied

Question 7

How do you calculate % change?

Answer 7

(Difference / original) x100

Question 8

What is the word equation for anaerobic respiration?

Answer 8

Glucose -> lactic acid

Question 9

What is the symbol equation for anaerobic respiration?

Answer 9

C6H12O6 -> 2C3H6O3

Question 10

What is the symbol equation for lactic acid?

Answer 10

2C3H6O3