Skip to content
Prep
Freely
Home
TOEFL
IELTS
Guides
Log in
Sign up
P
Account
Profile
My progress
Settings
Log out
TOEFL
/
Listening practice
/ Section 6ZS5
Listen to an Academic Talk
Listen to part of a talk in a microbiology class.
Listen
45. According to the speaker, what does an antibiotic do to a bacterial population?
A
It causes cells to alter their genes.
B
It removes the cells that lack a protective variation.
C
It slows the reproduction of all cells equally.
D
It prevents genes from being transferred.