Although an orphan, Ian is also Jewish. If both he and Sylvia were carriers, what would be their chances of having a Tay-Sach's child?
a. 3 out of 4 (75%)
b. 2 out of 4 (50%)
c. 1 out of 4 (25%)
d. Not enough information is given to make this type of prediction.
c
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Adenylyl cyclase is to cAMP as ________ is to IP3.
A. protein kinase A B. protein kinase C C. calmodulin D. Raf1 E. phospholipase C
Which group of organisms is not classified as ectotherms? a. All of these choices are ectotherms
b. Fish c. Amphibians d. Lizards e. Mammals
Dinoflagellates
a. may produce red tides that poison and kill fish. b. produce a poison that builds up in the tissues of shellfish and may kill humans who eat infected shellfish. c. may undergo a population explosion that turns the ocean red or various colors. d. commonly are photosynthetic marine plankton. e. are all of these.
Endotoxin belongs to a class of biological molecules called
A. mucopolysaccharides B. lipopolysaccharides C. nucleic acids D. proteins E. peptioglycans