One of the first successful applications of genetic engineering was the commercial production of ____
a. clotting factor
b. insulin
c. hemoglobin
d. collagen
e. human growth factor
ANSWER: b
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Uniparental disomy explains
A) a person with dwarfism who has autosomal dominant achondroplasia born to parents of normal height. B) some cases of severe blood infections. C) a new mutation in which a child has a condition that no other relative has. D) a child with an autosomal recessive condition who has one wild type parent and one carrier parent.
Water is an excellent solvent for biological systems because
A) it can maintain a relatively unstable temperature for chemical reactions to occur. B) compounds with ionic bonds as well as those with polar covalent bonds readily dissolve in water. C) it is semisolid at body temperature, preventing it from flowing freely through the human body. D) it can rearrange its bonds, forming covalent bonds with other molecules once dissolved.
How does DNA polymerase differ from RNA polymerase?
A. Only DNA polymerase uses a template DNA strand to direct synthesis of a new nucleotide strand. B. Only DNA polymerase has a proofreading ability. C. Only RNA polymerase adds new nucleotides to the 3' end of a growing chain. D. Only RNA polymerase requires a primer.
The terms used for the four general types of fungal infection include the following, except
A. bloodborne. B. systemic. C. subcutaneous. D. superficial. E. cutaneous.