Which technique uses the least amount of sample needed for forensic analysis?
A) PCR
B) RFLP
C) Genomic DNA
D) cDNA isolation
E) Southern blot
A
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The term amphipathic describes the characteristic of some molecules that have ________.
A) two polar regions B) only a single polar region C) both a polar and a nonpolar region D) no polar regions E) two nonpolar regions
Although toxic to early autotrophs and heterotrophs, ________ is essential to most modern forms of life, where it functions as an electron acceptor
a. oxygen b. phosphate c. magnesium d. carbon dioxide
___ cells are required for almost all parts of the innate and adaptive immune responses to function properly.
What will be an ideal response?
All of the following descriptions of embryonic stem cells are true EXCEPT that they ________
A) are derived from the inner cell mass of a blastocyst B) are self-renewing C) are present in all adult tissues D) are pluripotent E) can differentiate into all body cells