A bacterial artificial chromosome (BAC) is different from a plasmid vector because it:
A. lacks an origin for replication in bacteria.
B. accommodates much larger fragments (100–300kb).
C. has a higher copy number than the plasmid vector.
D. has only selectable markers with which to detect its presence in cells.
E. lacks par genes that the plasmid has to maintain its high copy number.
B
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Instead of oxygen________ may utilize nitrate or sulfate as their final electron acceptors
Fill in the blank(s) with the appropriate word(s).
A Women's Studies professor wants her students to learn more about their bodies, so she asks the female students to measure their basal body temperature daily. A small rise in temperature indicates that ovulation is occurring. However, some students do not record a change in temperature-which ones?
A. Students with IUDs. B. Students who have never had intercourse. C. Students using any form of birth control. D. Students using oral contraceptives, hormonal implants, or injections.
Describe the astronomical conditions that give rise to the extreme spring tides during certain periods of the month
What will be an ideal response?
Describe experiments using marker molecules that have been done to elucidate important properties of (1) tight junctions and (2) gap junctions,
and propose one additional experiment you could do with each junction to gain a greater understanding of that junction's properties. What will be an ideal response?