One feature shared by modern humans and
lacking in other Homo species is
a. a chin.
b. a large brain.
c. bipedalism.
d. tool making.
e. legs longer than arms
A
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What is the benefit of using Taq polymerase in PCR?
A. Because it is taken from a bacteria with a circular DNA molecule, the DNA molecule doesn't shorten during PCR. B. Because it is taken from a bacteria, this enzyme works much quicker than other types of DNA polymerase. C. Because it is taken from a bacteria that lives in high temperatures, it does not denature and more DNA polymerase does not have to be added after every cycle. D. Because it is taken from a bacteria, this polymerase makes fewer mistakes. E. None of the answer options are correct.
All mammals develop a placenta, which provides for exchange of nutrients and wastes
between mother and offspring.
a. True, by definition, mammals have placentas. b. False, some mammals produce eggs. c. True, all mammals have amniotic eggs. d. False, not all mammals nurture their young
During a fever the ________ will send out a signal to cause the blood vessels in the skin to ________
a. hypothalamus, spasm b. hypothalamus, dilate c. pituitary, constrict d. hypothalamus, constrict e. pituitary, dilate
Describe how the laws of thermodynamics would impact the Earth were the sun’s light suddenly
blocked? What will be an ideal response?