In order to increase blood glucose levels, what hormone is secreted by the pancreas to stimulate the liver to convert stored glycogen into glucose?
A) insulin
B) gastrin
C) glucagon
D) cholecystokinin
C
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Which is a characteristic of a plasmid used as a cloning vector? (Select all that apply.)
A) contains a selectable marker B) contains an origin of replication C) has several unique recognition sites for restriction enzymes D) integrates into the host chromosome E) can hold an insert of up to 300 kb
All of the following pertain to virus envelopes except
A. located between the capsid and nucleic acid. B. gained as a virus leaves the nuclear membrane. C. gained as a virus leaves the host cell membrane. D. help the virus particle attach to host cells. E. contain special virus proteins.
In a population growth curve affected by environmental resistance, the formula G = rN(K – N)/K is used to calculate the number of new individuals added after each time interval. In this equation K represents the
A. number of individuals added per unit time. B. carrying capacity. C. environmental resistance. D. number of individuals at the start of a time interval. E. per capita rate of increase.
Agricultural workers and field archaeologists are exposed to this organism which, despite entering via the respiratory tract, can cause meningitis.
A. Neisseria meningitidis B. Cryptococcus neoformans C. Coccidioides immitis D. Haemophilus influenzae E. Streptococcus pneumoniae