Which of the following is a probable lifespan of memory B cells?
A) 5 minutes
B) 5 hours
C) 5 days
D) 5 years
Answer: D
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Using the drawing of mRNA below, choose the letter that best fits the description. Translation is often regulated by sequences in this region. ____
What will be an ideal response?
Cancer causing mutations are always the result of chromosomal rearrangements
a. True b. False Indicate whether the statement is true or false
Which of the following steps are crucial for the success of a nucleic acid amplification test, such as PCR?
a. Nucleic acid purification b. Fluorescent resonance energy transfer (FRET) c. Melting temperature analysis d. Nucleic acid sequencing
In humans, an extra copy of chromosome 21 typically leads to moderate to severe mental retardation and sterility, as
well as to a greater likelihood of heart defects and other problems. This disorder is known as ____.
a. Turner syndrome b. Down syndrome c. cri-du-chat d. Triple-X syndrome e. Klinefelter syndrome