Which of the following statements regarding the structure of DNA is false?
A) The DNA molecule has a uniform diameter.
B) In a DNA molecule, adenine bonds to thymine and guanine to cytosine.
C) Watson and Crick received a Nobel Prize for their description of the structure of DNA.
D) The sequence of nucleotides along the length of a single DNA strand is restricted by the base-pairing rules.
Answer: D
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Complete the following sentence. An exon is _______________________
A. a protein that is clipped out post- translationally B. RNA that is removed during the processing of an RNA molecule and remains inside the nucleus C. part of an intact, mature mRNA that leaves the nucleus D. a transfer RNA that binds to the codon E. a series of amino acids at the end of a new polypeptide that directs transcription to the ER
The codon GGU codes for which amino acid?
a. valine (Val) b. arginine (Arg) c. glycine (Gly) d. serine (Ser)
All of the following could find a location in or on human body tissues suitable for growth except ________.
A. anaerobes B. facultative anaerobes C. mesophiles D. psychrophiles E. capnophiles
Biomining takes advantage of prokaryotes ability to ________ metals.
A. reduce B. reduce the solubility of C. oxidize D. directly solubilize E. bioaccumulate