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Explaining Bacterial Growth

APBIO-R2TYEP

A scientist decides to culture a species of bacteria in his laboratory for further study, he introduces a small number of the cells to a petri dish prepared with all the nutrients the species require for growth and reproduction.

Below is a graph of the bacterial population.

Which of the following analyses of the graph is MOST accurate?

Created for Albert.io. Copyright 2016. All rights reserved.

A

The scientist transferred some of the bacteria to a new petri dish at Hour 1.

B

The bacteria had an excess of space and nutrients at Hour 2.

C

The carrying capacity of the petri dish was exceeded at Hour 3.

D

The petri dish was contaminated with a competing species of bacteria at Hour 5.