The Germ Theory states - A. diseases must be inherited from parents to show.
B. microorganisms are able to cause diseases.
C. life cannot come from nonliving factors.
D. viruses and bacteria have different mechanisms of infection.

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

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

Staining is an important way to improve what aspects of microscopy?