©McGraw-Hill EducationBased on the phylogeny shown, the outgroup would be species

A. 1.
B. 2.
C. 3.
D. 4.
E. 5.


Answer: A

Biology & Microbiology

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In which stages do internal checkpoints occur during the cell cycle?

a. Near the end of G1 and at the G2–M transition b. Only during metaphase c. Near the end of G1, at the G2–M transition, and during metaphase d. Only at the end of the G2–M transition

Biology & Microbiology

The net weight of all of the organisms living in an ecosystem is its  

A.  productivity. B.  biomass. C.  vital force. D.  photosynthesis minus metabolism. E.  combined output of metabolism and photosynthesis.

Biology & Microbiology

The structures responsible for detecting linear movement relative to the pull of gravity are labeled __________ in Figure 43-2


a. 1 and 3
b. 4 and 6
c. 3 and 5
d. 1 and 6
e. 4 and 7

Biology & Microbiology

How is the ability of phospholipids to spontaneously form membranes when placed in water important in the origin of life on Earth?

A. Membranes are used by cells to catalyze reactions. B. Membranes are used by cells to store genetic information. C. Membranes protect a cell from high temperatures and pressures in the environment. D. Membranes are used by cells to isolate their contents from the environment. E. Membranes protect a cell from gases in the atmosphere

Biology & Microbiology