Many flowers exude a sweet fluid called __________ that is prized by many pollinators. Fill in the blank(s) with the appropriate word(s)
ANSWER: nectar
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Detail the mechanism by which halophilic Archaea obtain energy from light
What will be an ideal response?
Comparison of proteins from normal muscle cells and cells derived from a fibrosarcoma is performed using two-dimensional gel analysis
The gel with normal muscle cells shows one large protein, FS, which disappears from the gel with the fibrosarcoma cell lysates. Two smaller proteins (P1 and P2) have appeared in the fibrosarcoma cells. Mass spectrophotometry of FS, P1, and P2 indicates that the new smaller proteins have sequences that match the protein FS; if combined, their sizes would be equivalent to protein FS. With these results, which of the following could be a reasonable conclusion? A. Protein FS been covalently modified by phosphorylation in fibrosarcoma cells. B. P1 and P2 cause fibrosarcoma. C. Intact FS insures normal cell function. D. Cleavage of FS to P1 and P2 may be associated with fibrosarcoma. E. There is a mutated form of FS in fibrosarcoma patients.
Vinegar is a good cleaning solution because it is a weak acid, while ammonia is a good cleaner
because it is a weak base.
Indicate whether the statement is true or false.In Drosophila, two maternal transcripts that are distributed evenly throughout the oocyte prior to fertilization are
A) caudal and knirps. B) bicoid and nanos. C) caudal and hunchback. D) sevenless and even-skipped.