"When in doubt, ." A. it is doubtful
B. don't write it down
C. do not buy
D. stop reading
E. throw it out

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

The term equestrian relates to which animal? bulls cows horses pigs

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?