Penicillin-binding protein 2a, encoded by the medA gene, isn’t affected by beta-lactam antibiotics.
a. True
b. False

20 points.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.