Plasma membranes are best described as a
A) single layer of phospholipids with tails pointed toward the inside of the cell.
B) double layer of phospholipids with hydrophilic heads facing away from one another.
C) single layer of phospholipids with water molecules attached along one side.
D) double layer of phospholipids with hydrophobic tails facing toward one another.
E) double layer of phospholipids with hydrophobic tails facing away from each other (toward the cytoplasm of the cell and the extracellular solution).
D
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The upstream activator sequence for the GAL genes (UASGAL) is recognized by:
A. Gal80p. B. Gal3p. C. Mig1. D. Gal4p.
DNA plus its associated proteins is called a ________
A) centromere B) gene C) chromatin D) genome
Cholesterol is essential for keeping cell membranes from thickening
Indicate whether the statement is true or false.
Nucleic acid testing is appropriate as a testing method when one is not sure what microorganisms are present in the specimen.
Answer the following statement true (T) or false (F)