Tinkering with the genetics of animals
a. does not raise ethical questions.
b. violates the laws of nature.
c. can be viewed as an extension of thousands of
years of acceptable barnyard practices.
d. will inevitably result in the elimination of
natural species.
e. is not considered an acceptable scientific
endeavor.
Answer: c
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Supercoiling of double-stranded DNA is called its ______________ structure
A. primary B. secondary C. tertiary D. quaternary E. duplex
What are the basic building blocks of proteins?
a. Fatty acids b. Sucrose c. Glucose d. Amino acids e. Nucleic acids
An organism whose genetic makeup allows it to produce more offspring than another of its species is said to have greater
a. fitness. b. evolution. c. foraging. d. selection.
Which of the following statements about epithelial tissue is NOT true?
A. Epithelium lining the respiratory tract contains cilia that move particles along its surface. B. Pseudostratified epithelium looks like it has multiple layers, but all the cells are attached to the basement membrane. C. Columnar epithelium is cube-shaped with the nucleus near the upper surface of the cells. D. Squamous epithelium is composed of flattened cells. E. Simple epithelia have only a single layer of cells.