All of the following are true of the polymerase chain reaction (PCR) except:
A. A heat-stable DNA polymerase is used in the reaction process.
B. Short pieces of DNA called primers are added to the reaction mixtures.
C. Large amounts of DNA must be isolated from the source organism.
D. Billions of copies of a DNA sequence are made in a few hours.
E. An automated thermocycler is used to heat and cool the reaction samples
Ans: C. Large amounts of DNA must be isolated from the source organism.
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Evaporation exerts tension on the narrow columns of water that fill xylem tubes. The tension occurs because liquid water has ____
a. cohesion due to hydrogen bonds b. cohesion due to ionic bonds c. translocation of sugars d. pressure due to compression within xylem e. high oxygen content due to soil conditions
To study the maximum amount of genome diversity in the human species, which of the following provides the most information?
A) karyotyping B) SNP variation C) DNA fingerprinting D) sequencing of one or more specific genes E) ortholog comparisons
Sam was pretty self-destructive: He drank alcohol heavily and smoked marijuana and tobacco frequently. He would steal sedatives from the medicine cabinets of his friends and family for his own pleasure, too
What reproductive system problem is he more likely to have than other men of the same age? What can Sam possibly do about that situation?
Autoimmune diseases and immunodeficiencies are studied and treated by immunopathologists.
Answer the following statement true (T) or false (F)