Which of the following hydrocarbon compounds are MOST recalcitrant?
A) straight-chain hydrocarbons
B) ethane
C) polycyclic hydrocarbons
D) propane
Answer: C
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The chorion of amniotic eggs functions in:
a. supply of food. b. removal of wastes. c. gas exchange. d. protection of the egg. e. absorbing toxins.
From X-ray diffraction data, which of the
following was determined about DNA?
a. The amount of adenine equaled the amount of thymine. b. Different species have different proportions of adenine and guanine. c. Nitrogen containing bases were arranged on the outside of the double helix structure. d. The shape of the molecule could be a double helix. e. All of these were determined
The filaments typically grow as an extensive mesh
called a __________. Fill in the blank(s) with the appropriate word(s).
The tolerance of facultative anaerobic bacteria to lethal superoxide when they are exposed to air is due to
A. The lack of CYP C oxidase B. Presence of CYP C oxidase C. Inability to form the superoxide radical D. Presence of superoxide dismutase and catalase