In a Punnett square where are the gametes listed?
A) Along the top and left side of the square
B) In the boxes of the square
C) On the left and right sides of the square
D) On the bottom and right sides of the square
A) Along the top and left side of the square
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If you isolate a pancreatic beta cell and put it in the proper growth conditions, it will divide by mitosis and produce new beta cells, but it will not produce pancreatic alpha cells or pancreatic cells that release digestive enzymes. The pancreatic beta cell is
A. totipotent B. impotent C. unipotent D. multipotent E. pluripotent
Which of the following is not an advantage of anaerobic sludge digestion?
A. Heavy metals are concentrated in the sludge. B. Most of the biomass produced aerobically is used for methane production. C. The remaining sludge can be dried easily before disposal. D. All of these choices are correct.
Gross primary productivity refers to the total
a. quantity of solar energy available to the ecosystem in a given period of time. b. quantity of solar energy reaching a given area of the ecosystem. c. energy trapped initially by the producers. d. energy used by the heterotrophs of the ecosystem in a given period of time. e. energy used by the producers for their growth and reproduction.
Which process describes the forcing of water and other small molecules from the blood into a kidney tubule?
A) absorption B) filtration C) secretion D) excretion