Biology: Concepts and Investigations 2nd Edition by Mariëlle Hoefnagels

Exercise 13

Distinguish between the following pairs of terms: (a) a phototroph and a chemotroph; (b) a gram-negative and a gram-positive bacterium; (c) an autotroph and a heterotroph; (d) an obligate anaerobe and a facultative anaerobe; and (e) transformation and transduction.