According to the life table, the average age of maturity for this population is
A) age 0.
B) age 1.
C) age 3.
D) age 4.
E) ages 3-5
Ans: C) age 3.
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Which is an example of a recombinant DNA molecule?
A) a single-stranded RNA hybridized to a single-stranded DNA B) a genomic fragment of human DNA ligated into a bacterial plasmid vector C) a bacteriophage chromosome in a bacterial cell D) a bacterial plasmid cut with a restriction enzyme and then resealed using ligase
The sodium-potassium pump is used in
a. facilitated diffusion. b. simple diffusion. c. active transport. d. osmosis. e. bulk flow
The cells of unicellular organisms are
A. Specialized to perform different tasks B. Able to carry out all of the functions necessary for life C. Unable to respond to changes in their environment D. Larger than those of multicellular organisms
1 mole = 1000 millimoles (mmol); 1millimole = 1000 micromoles (µmol). If a solution contains 38231 µmol, what is that amount in mmol?
A. 3823.1 mmol B. 382.31 mmol C. 38.231 mmol D. 3.8231 mmol