Gene amplification involves:a
increasing the affinity of a gene to DNA polymerase.
b. extra replication of genes that specify a certain gene product only in cells needing this
product.
c. improving the accuracy by which a gene is copied to produce an mRNA molecule.
d. enhancing the activity of RNA polymerase.
e. increasing the size of the gene that encodes a needed protein.
B
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DNAase is an enzyme that catalyzes the hydrolysis of the covalent bonds that join nucleotides together. What would first happen to DNA molecules treated with DNAase?
A) The two strands of the double helix would separate. B) The phosphodiester bonds between deoxyribose sugars would be broken. C) The purines would be separated from the deoxyribose sugars. D) The pyrimidines would be separated from the deoxyribose sugars. E) All bases would be separated from the deoxyribose sugars.
Cartilage injuries do not repair themselves because ________. a. All of these choices are reasons cartilage injuries do not repair themselves
b. cartilage does not receive nutrients very easily c. cartilage does not contain blood vessels d. None of these are reasons as cartilage does heal itself. e. cartilage does not divide in adults
A structure covered by the anterior labia minora that contains many nerve endings and functions in sexual arousal in females is called the ________
A) uterus B) vagina C) clitoris D) cervix
The template DNA strand is described as being parallel to the complementary RNA strand
__________________ Indicate whether the statement is true or false.