A layer of lipoprotein and glycoprotein that covers the outer surface of some viruses is the
A. capsid.
B. casing.
C. envelope.
D. membrane.
E. viroid.
C. envelope.
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Which of the following is the most responsible for success of humans as a population?
A. the ability to speak B. being bipedal C. the ability to transmit culture D. driving biological evolution through cultural evolution E. None of the answer options is correct.
Which of the following traits is not seen in any species of lamprey?
a. backbone b. jaws c. oral disk with keratinized teeth d. metamorphosis
Which is a complete list of the ingredients that are essential for PCR?
a. nucleotides, DNA template, Taq polymerase, and primers b. nucleotides, DNA template, DNA ligase, and primers c. restriction enzymes, DNA template, Taq polymerase, and primers d. nucleotides, DNA template, Taq polymerase, and plasmids e. nucleotides, DNA template, DNA ligase, and plasmids
The second most common cancer in both men and woman is cancer of the ____
a. blood b. skin c. colon d. lung e. pancreas