If DNA is likened to a ladder, what are the compounds that make up the sides of the ladder?
a. phosphates and bases
b. phosphates and sugars
c. bases only
d. phosphates only
e. bases and sugars
B
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All of the following involve molecular biology techniques except
A. ligating DNA fragments together. B. using restriction enzymes to cut specific sequences of DNA. C. using a DNA polymerase to copy DNA via PCR. D. creation of Okazaki fragments.
Genomic ________ are collections of isolated genes maintained in cloning hosts.
A. books B. clones C. libraries D. digests E. DNA
Cytotoxic T-cells attack:
a) Host cells infected with bacteria b) Transplanted tissue cells from another host c) Cancer cells d) Two of the above are true e) All of the above are true
Depletion of the helper T cell population by HIV results in the development of AIDS.
Answer the following statement true (T) or false (F)