Which nucleotide pairs mark the beginning and end of each intron?
a. GG at the 5’ end, AU at the 3’ end
b. AG at the 5’ end, GU at the 3’ end
c. GU at the 5’ end, AG at the 3’ end
d. GA at the 5’ end, AG at the 3’ end
c. GU at the 5’ end, AG at the 3’ end
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How do gap junctions differ from desmosomes?
a. A gap junction bridges the space between cells. b. A gap junction is a much larger space between cells. c. A gap junction provides communication between cells. d. A gap junction can control the passage of materials between cells. e. A gap junction requires the use of ATP to open and close its channels.
A viral capsid is composed of subunits called:
a. Envelopes b. Nucleic Acids c. RNA d. Coats e. Capsomeres, which are in turn made of protomers
Two distinguishing factors of the epsilonproteobacteria that they are motile and microaerophilic
Indicate whether the statement is true or false
Human populations can grow at a maximum rate of ____
a. 2-5 percent per year b. 5-7 percent per year c. 7-9 percent per year d. 10-12 percent per year e. 12-15 percent per year