Which of the following mRNA modifications are common in human cells?
A. 5' cap addition
B. intron removal and exon joining
C. 3' poly-A tail addition
D. alternative splicing
E. 5' cap addition, intron removal and exon joining, 3' poly-A tail addition and alternative splicing
Answer: E
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Which of the following imaging techniques detects differences in blood flow to particular regions through detection of differences in the relative proportions of oxygenated and deoxygenated hemoglobin?
A. X-ray B. CT scan C. MRI scan D. fMRI scan E. sonogram
The structure labeled "E" in this figure of a replication fork represents ____
a. single-stranded binding protein b. primase c. DNA ligase d. helicase e. DNA polymerase
All of the following diseases can be transmitted by drinking contaminated water except ________.
A. cyclosporiasis B. Campylobacter C. giardiasis D. trichinosis E. cryptosporidiosis
Compare the use of biosensors with traditional methods of determining microbial contamination.
What will be an ideal response?