In 2010, a research team led by Craig Venter transplanted an artificial genome into a small bacterial cell. The researchers hope that this technology might eventually lead to practical uses such as _____________.
A. developing artificial human embryos
B. developing bacterial strains that could grow in the wild and compete with harmful organisms
C. to make pathogenic microorganisms to use as biological weapons
D. cleaning up toxic waste or generating biofuels
D. cleaning up toxic waste or generating biofuels
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The human genome contains about __________ genes
a. 25,000 b. 45,000 c. 60,000 d. 80,000 e. 120,000
Carbon has four valence electrons and oxygen has six. Carbon dioxide would contain ________.
A. two double covalent bonds B. two single covalent bonds C. four hydrogen bonds D. one single covalent bond
Type I topoisomerases differ from type II topoisomerases in that the type I enzymes ________
A) decrease the linking number (L) of a double helix B) ligate fragments of DNA that have been hydrolyzed C) cleave both strands of a double helix D) induce negative supercoiling E) cleave one strand of a double helix
Nutritional labels on food are based on a diet of:
What will be an ideal response?