Effector B cells are called ____
a. memory cells
b. macrophages
c. plasma cells
d. blood cells
e. antigen producing cells
ANSWER: c
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Based on your knowledge of hydrocarbon degradation, what factors most likely limited the rate of petroleum degradation after the Exxon Valdez oil spill off the coast of Alaska?
A) salt concentration B) temperature C) inorganic nutrient concentrations D) temperature and inorganic nutrient concentrations
What is a positive result for the starch, casein, and gelatin hydrolysis test (i.e., what would you see on the plate/in the tube if the organism had extracellular enzymes to break down these macromolecules?)
What will be an ideal response?
One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in proteins. Today we know that _________, a sequence of three adjacent nucleotides, determine the insertion of a specific amino acid in a polypeptide chain
a) codon b) karyotype c) reverse transcritption d) glycerol
Which of the following is NOT a characteristic of Okazaki fragments?
A) They are checked for accuracy by DNA polymerase III. B) They make up the lagging strand of replicated DNA. C) They begin with an RNA primer. D) They are joined together by DNA ligase. E) They are longer in eukaryotic cells.