Foraminifera are predatory protists with a ____ shell, which is the ultimate source of _____
a. silicon; oxygen
b. carbon; carbon dioxide
c. chitin; ozone
d. bicarbonate; chalk and limestone
e. calcium carbonate; chalk and limestone
ANSWER: e
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By nature of its infectivity, M13 phage can be used in the laboratory to continually propagate a particular DNA sequence inside of Escherichia coli by simply culturing infected E. coli in LB
Indicate whether the statement is true or false.
If one person in 50 is a carrier of an autosomal recessive disorder in a population, the chance that an unrelated man and woman are both carriers is
A) 1/50. B) 1/100. C) 1/1000. D) 1/2500.
The 3? end of eukaryotic pre-mRNAs are changed by:
a. removing the last phosphate group. b. adding a "cap." c. copying the last few bases so that it can form a duplex structure. d. adding 100?250 adenine nucleotides. e. phosphorylation of the mRNA molecule
The ________ route of drug administration is commonly used for small laboratory animals such as the rat.
a. intraperitoneal b. oral c. intravascular d. topical e. intranasal