Please match the descriptions with the correct bacterial genus to test your understanding of curve-shaped bacteria.
S-shaped spiral bacterium
A) Helicobacter
B) Campylobacter
C) Vibrio
B) Campylobacter
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Which of the following correctly lists the types of cellular communication from shortest to longest distance travelled by the signaling molecule to reach its responding cell?
A. paracrine, autocrine, endocrine B. autocrine, endocrine, paracrine C. autocrine, paracrine, endocrine D. endocrine, paracrine, autocrine
Leeches belong to the phylum
a. Arthropoda. b. Mollusca. c. Annelida. d. Cnidaria.
The cell cycle is controlled in most cells by
A) a series of checkpoints. B) time-after a certain length of time the cell divides. C) the completion of one phase which triggers the beginning of the next. D) cell size, when the cell reaches a certain size, it divides. E) different cells exhibit different control strategies, any of the 4 above can be found in eukaryotic organisms.
Jim needs to prepare one liter of a 4% NaCl solution. How much NaCl should he weigh out?
A. 40 grams B. 400 grams C. 4.0 grams D. 0.4 grams