Archaic Homo sapiens arose about:a
2 million years ago.
b. 1.25 million years ago.
c. 400,000 years ago.
d. 30,000 years ago.
e. 10,000 years ago.
C
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Choose the hormone that is NOT correctly matched with its chemical category.
A. polypeptides—ADH B. steroid—estradiol C. amine—FSH D. glycoprotein—LH E. steroid—testosterone
How many copies of a specific allele does a somatic cell have?
a. 1 b. 2 c. 23 d. 46 e. 92
Currently, much commercial lumber and wood products come from which biome?
a. tundra b. temperate rain forest c. savanna d. tropical rain forest e. temperate deciduous forest
In a phospholipid, the phosphate would be found in which part of a membrane?
A. in the bilayer, shielded from water. B. on the surface of the membrane, interacting with water. C. in the bilayer, interacting with water. D. on the surface of the membrane, shielded from water.