An infectious protein is a
A) bacteriophage.
B) prion.
C) retrovirus.
D) viroid.
E) papovavirus.
B
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A collection of similarly specialized cells and any extracellular material they secrete and maintain describes
(a) an organ. (b) a system. (c) a tissue. (d) organelles.
Which of the following elements is (are) likely
to provide hints about earth's early atmosphere?
a. ancient rocks b. volcanic eruptions c. ancient rocks and volcanic eruptions d. meteorites and ancient rocks e. meteorites, volcanic eruptions, and ancient rocks
What is observed when syntenic genes are close enough to one another that they are unable to assort independently?
What will be an ideal response?
The codon is found in the:a
mRNA. b. nontemplate strand of DNA. c. template strand of DNA. d. tRNA. e. rRNA.