Why are hydrocarbons considered hydrophobic?
a. Hydrocarbons exist as isomers.
b. Hydrocarbons contain oxygen atoms.
c. The covalent bonds between carbon atoms are polar.
d. The covalent bonds between hydrogen and carbon are nonpolar.
e. The hydrogen bonds between hydrogen and carbon are nonpolar.
d
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Which of the following is true of the structure of typical transcriptional activators?
A. They contain only one type of motif. B. The regulatory domain contains the DNA-binding motif. C. The DNA-binding domain always binds to the coactivator. D. They contain a regulatory domain that can be functional when separated from the DNA-binding domain.
If a mutation occurred in a flatworm such that the flame cells no longer functioned, what do you predict would be the consequence?
A. The parasitic forms could no longer hold onto their host. B. Excretory function would be impaired. C. Digestive function would be impaired. D. Nerve function would be impaired. E. Reproductive function would be impaired.
Which of the following is TRUE of asexual reproduction?
a. It allows an individual’s genes to adjust to the environment. b. It produces greater genetic diversity. c. It is a good strategy if an organism lives in a constant, unchanging environment. d. It slows the accumulation of potentially harmful mutations. e. It allows only half of an individual’s genes to be passed on.
It has become clear that there are many examples of genetic information being transferred from one species to another. This would
A. increase the number of mutations in the species receiving the genetic information. B. increase the genetic diversity of the species receiving the genetic information. C. cause new species to form. D. make selecting agents less important.