Four of the five answers listed below are targets of the immune system. Select the exception
a. virus
b. normal cells
c. cancer cells
d. bacteria
e. debris and dead cells
B
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Which of the following is(are) true about a zebrafish that glows in the dark because its DNA
contains and expresses the firefly gene for bioluminescence?
a. It is a transgenic organism. b. It has been genetically engineered. c. Its DNA profile has been determined. d. It is a transgenic organism, and it has been genetically engineered.
Purines and pyrimidines are ____
a. Okazaki fragments b. pentose-phosphate backbones c. nucleic acids d. phosphate bases e. nitrogenous bases
The reason that the various Hawaiian
honeycreepers are vulnerable to extinction is a. the reduction of their habitats. b. the warming of their habitats, supporting mosquitoes that carry the pathogens for avian malaria. c. the encroachment of humans into their habitats. d. the importation of new predators and competitors into their habitats. e. all of these answers
Describe a benefit of cloning plants and animals. What will be an ideal response?