Frogs are in which group?
In most species, the female frog lays her eggs directly in the water as a male clasps her back and releases sperm. The fertilized eggs hatch into legless, aquatic tadpoles. Most tadpoles feed on algae, and have gills. As they mature, tadpoles develop legs and lungs, lose the tail, and acquire carnivorous tastes.
A. amphibians
B. mammals
C. lancelets
D. fishes
E. reptiles
A. amphibians
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Chemolithotrophs that obtain electrons from donors such as sulfide use the same electron transport chains to obtain energy as chemoorganotrophs
Indicate whether the statement is true or false.
The extraembryonic membrane that secretes fluid around the developing embryo is the ____
a. allantois b. amnion c. chorion d. yolk sac e. both the allantois and the yolk sac
DNA microarray technology is used to measure the ________.
A. genetic complexity of cells of interest B. levels of specific RNAs expressed by cells C. levels of specific proteins expressed by cells D. DNA content of cells
A woman uses a home pregnancy test kit that tests for hCG hormone in urine. She knows this is a type of antibody assay from the kit brochure. Antibodies reacting with the hormone produce two lines on the test strip. What specific type of antibody assay
does this represent? A) a direct immunofluoresence test B) a complement fixation test C) an immunochromatographic assay D) an ELISA E) a neutralization assay