Organisms that have been modified to contain DNA from other species are known as (select all that apply)
A. transgenic organisms.
B. genetically modified organisms (GMO's).
C. recombinant DNA organisms.
D. Sanger recombinants.
E. DNA hybrids.
A,B
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In the citric acid cycle, succinate is oxidized to form
A. fumarate. B. succinate. C. citrate. D. malate. E. oxaloacetate.
Vectors can transfer ____
a. DNA sequences into bacterial host cells for cloning b. DNA sequences into viral host cells for cloning c. cloned viral cells into a bacterial host for cloning d. cloned mitochondria from donor cell to host cell e. cloned chromosomes from the nucleus of a cell into its cytoplasm
As elevation increases, O2 ____
a. availability increases b. availability decreases c. availability remains constant d. levels increase, but there is none present above 20,000 feet e. levels decrease, until there is none present above 20,000 feet
How many chambers does the frog heart have?
a. one. b. two. c. three. d. four.