How many genes are involved in determining skin color?
a. 1
b. 2
c. 10
d. 20
e. more than 100
ANSWER: e
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Describe what occurs when elemental sulfur is provided externally as an electron donor and how energy is obtained
What will be an ideal response?
Which category of animals had the most threatened and endangered species in 2012?
a. birds b. fishes c. insects d. reptiles
Which genomic arrangement has not been found in viruses?
A) double-stranded RNA B) a combination of DNA and RNA in the same virus C) double-stranded DNA D) single-stranded DNA E) single-stranded RNA
What is considered the most critical function of erythrocytes?
A. the transport of carbon dioxide B. the transport of oxygen C. buffering against changes in blood pH D. assisting in clot formation E. All of the answers are considered the most critical functions of erythrocytes.