Organisms that feed on other organisms are known as _____ ______ ______ .
Fill in the blank(s) with the appropriate word(s).
Ans: heterotrophs, humans, animals
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A woman with apparently normal health (mother) and a colorblind man (father) had a son with hemophilia and a normal daughter. If the genes for both traits are on the X chromosome, which statement about this family is true?
A. The maternal grandfather is colorblind. B. The daughter cannot be a carrier for colorblindness. C. The maternal grandfather is not hemophilic. D. There is a 50% chance that the maternal grandfather is hemophilic. E. The father is a carrier of hemophilia.
A mutant tRNA that recognizes a nonsense codon and inserts an amino acid where protein synthesis should have stopped is a(n)
A) nonsense tRNA. B) nonsense suppressor tRNA. C) revertant tRNA. D) uncharged tRNA.
Carbaminohemoglobin differs from hemoglobin in that carbaminohemoglobin
A) is found in blood plasma. B) binds carbon monoxide instead of carbon dioxide. C) is found in red blood cells. D) is bound to carbon dioxide. E) transports oxygen from the lungs to the cells.
Refer to the accompanying figure. Which label indicates the location of the promoter region?
a. A
b. B
c. C
d. D
e. E