Most biologists recognize __________ domains
a. 3
b. 4
c. 5
d. 6
e. 12
A
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An example of commensalism is a(n) ____
a. a clown fish living in a sea anemone b. an orchid growing on a tree branch c. yucca plant seeds dispersed by yucca moths d. Canadian lynx preying on a snowshoe hare e. a tapeworm living in a human intestine
The sensory structure in Figure 43-1 is capable of:
a. detecting changes in orientation.
b. sensing light touch.
c. maintaining equilibrium.
d. detecting muscle movement.
e. detecting vibrations.
The ultracentriguge is an important piece of lab equipment frequently used by cell biologists. What are some applications for the ultracentrifuge? choose one or more
A.) determining whether prokaryotic cells are bacteria or archaea B.) separating isomers of 6-carbon sugars from each other C.) separating different cellular organelles from each other D.) determining the sequence of (linear order of) monomers in a macromolecular polymer
Attributes of Welwitschia mirabilis include
A. It is a member of the Gnetales. B. It obtains most of its water from seasonal heavy rains. C. Its stems are photosynthetic, but its leaves are not. D. It lives under desert conditions. E. It has only two leaves.