Which one of the following is TRUE regarding nucleotides?
A) There are three different DNA nucleotides.
B) DNA nucleotides are assembled into RNA by the process of dehydration synthesis.
C) DNA nucleotides contain deoxyribose; RNA nucleotides contain sucrose.
D) Nucleotides are bonded together by covalent bonds between the sugars and the phosphates.
E) A DNA nucleotide could be made up of ribose, a phosphate, and cytosine.
D
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What would happen if telomerase stopped working?
A. The cells would be able to divide indefinitely. B. Cancer would result. C. The cell would die immediately. D. The cell would eventually die as the DNA continued to shorten. E. None of the answer options are correct.
The major histocompatibility complex directs the production of proteins called
A. class IV. B. class II. C. class I. D. both class I and class II. E. both class I and class IV.
In a well-mixed estuary, river flow is ____ tidal currents
a. greater than b. less than c. perpendicular to d. equal to
The yeast used in making bread, beer, and wine is ________.
A. Leuconostoc mesenteroides B. Saccharomyces cerevisiae C. Spirulina D. Streptococcus lactis E. Propionibacterium