Biology Lab

I need help answering the question on the lab worksheet. Spectrophotometers are frequently used to measure the growth rate of bacteria that can cause infections in humans. Assume you had a throat culture of bacteria from a sick person. Describe how you could use the spectrophotometer to measure how rapidly the bacteria were capable of reproducing. Use the concept of absorbance in your answer and discuss how the absorbance would change based on the bacterial reproductive rate.