According to the multiregional model,
a. Homo erectus populations migrated out of
Africa.
b. Homo erectus evolved further in regions
beyond Africa.
c. Homo erectus populations gave rise to races
of Homo sapiens.
d. Homo sapiens subpopulations originated in
several separate locations.
e. all of these are true.
E
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Augustus Waller invented a machine that measures
a. blood pressure when the ventricles are contracting. b. blood pressure when the ventricles are relaxed. c. cardiac output. d. electrical activity of the brain. e. electrical activity of the heart.
The root nodules on this soybean plant contain anaerobic bacteria that help the plant by:
1.absorbing water
2.fixing nitrogen
3.increasing root surface area
4.helping anchor the plant in the soil
Substrate-level phosphorylation transfers
phosphate groups from a. substrate. b. coenzyme. c. the electron transfer chain. d. ATP. e. the Krebs cycle.
The routine laboratory procedure used to classify the bacterial world into two major groups is called the _____.
Fill in the blank(s) with the appropriate word(s).