The structure of DNA and RNA differs in that:
A. DNA is typically single-stranded, whereas RNA is double-stranded.
B. DNA folds into complex three-dimensional structures necessary for its activity.
C. DNA building blocks have four different nitrogenous bases, whereas RNA has a fifth base.
D. DNA contains a pentose sugar that has an additional hydroxyl group, which is lacking in the sugar found in RNA.
E. RNA folds into complex three-dimensional structures necessary for its activity.
E
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A mutation that changes a codon sequence, and subsequently changes the amino acid that should have been placed at that point in the polypeptide chain, is a
A) frameshift mutation. B) missense mutation. C) silent mutation. D) nonsense mutation.
Do the results for Suspects 1 and 2 appear to be similar?
a. yes b. no
During inflammation, a high neutrophil count is a common sign of bacterial infection.
Answer the following statement true (T) or false (F)
In C. elegans ced-9/ced-3 double mutants
A. all 1090 cells live. B. all 1090 cells die. C. only 959 cells live. D. 131 cells always die.