A typical ovule has how many cells?
a. 4
b. 5
c. 6
d. 7
e. 8
D
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Pickling is a type of food preservation utilizing
A) weak acids. B) basic substances. C) lyophilization. D) irradiation.
Which of the following statements is incorrect about mutations?
A. Some mutations change the nucleotide sequence of a gene. B. Mutations change the bases in DNA. C. A mutation in a somatic cell will be passed on to subsequent generations. D. Without mutations, there would be no variation and no evolution. E. Some mutations remove nucleotides from a gene.
Eukaryotes have how many different types of RNA polymerase enzymes?
A. three B. four C. one D. 64 E. two
Which is incorrect about histoplasmosis?
A) Respiratory infections range from mild to severe B) The pathogen grows inside macrophages C) Histoplasmosis never spreads to sites outside the respiratory tract D) Chronic cases have symptoms similar to tuberculosis E) Is transmitted by inhalation of spores