Many bryophytes have to tolerate desiccation because ___________. (Select all that apply.)
A. they dry out with the environment
B. they have little water-storage capacity
C. they are restricted to sunny habitats
D. they are restricted to saline habitats
A,B
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Which of the following best describes the way in which you would use restriction enzymes as you engineered bacterial cells to produce human proteins?
A. The same restriction enzyme would be used to cut both the donor DNA and the vector DNA. B. One restriction enzyme would be used to cut the donor DNA and a different one would be used to cleave the vector DNA. C. One restriction enzyme would be used to probe the protein-coding region and another would be used to cleave that region from the larger DNA molecule. D. Restriction enzymes would be used only to cleave the vector DNA. E. Restriction enzymes would be used only to cleave the donor DNA.
Chromatin remodeling can act as an on/off switch for ________, while microRNA binding can block ________.
A) transcription; translation B) translation; transcription C) synthesis of tRNAs; synthesis of rRNAs D) DNA replication; DNA repair
Which of the following vitamins is not stored in fat?
a. A b. K c. C d. D e. E
Clones are offspring that are
A. produced asexually and are genetically identical to their parent. B. produced sexually and are genetically identical to their parent. C. produced by sexual reproduction. D. genetically identical to their parent. E. produced by asexual reproduction.