The conclusion that early hominids were bipedal is
based in part on examination of
a. their S-shaped backbone.
b. the position of the foramen magnum.
c. footprints.
d. positions of the foramen magnum, S-shaped
backbone and footprints.
e. length of the femur.
Answer: d
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The first fossilized eukaryotes date to about how many years ago?
a. 3.8 billion b. 6,000 c. 2.1 billion d. 1 million e. 1.8 billion
Duplicated chromosomes linked together at their
centromeres at the beginning of meiosis are appropriately called what kind of chromatids? a. mother b. daughter c. sister d. homologous e. haploid
When fats are used as an energy source, the glycerol portion enters ________ when it has been converted to ________
A) the citric acid cycle; pyruvate B) glycolysis; fructose-6-phosphate C) the citric acid cycle; acetyl CoA D) the electron transport system; coenzyme Q E) glycolysis; dihydroxyacetone phosphate
Alcohol acts as a(n) ___ on the central nervous system.
Fill in the blank(s) with the appropriate word(s).