Which of the following pairs is incorrectly matched?
A. macrophage; class II MHC protein
B. B cell; class I MHC protein
C. B cell; IL-2 secretion
D. helper T cell; CD4
E. cytotoxic T cell; class I MHC protein
C. B cell; IL-2 secretion
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A particular gene has a mutation in its NFR that causes it to bind abnormally tightly to histones. What effect would you expect this mutation has on the expression of this gene?
A. The expression of the gene would be abnormally high. B. The effect on gene expression is impossible to predict. C. The gene would encode a different protein instead. D. The expression of the gene would be abnormally low or absent E. The promoter of the gene will be constantly available to transcription factors and RNA polymerase.
Pasteurization results in the sterilization of food products
Indicate whether this statement is true or false.
A child starts out with cold like symptoms. It moves to a ‘barking’ cough. How can you tell which disease this might be?
A. Cold and barking cough says “pertussis” B. Cold and barking cough says “Hib” C. Wait to see how bad the coughing might get D. Check the back of their throat for inflammation and airway constriction
The mediator protein complex in eukaryotes
A. is composed of a single protein. B. facilitates interactions between RNA polymerase II and regulatory transcription factors. C. controls the rate at which RNA polymerase translates mRNA. D. completely enfolds RNA polymerase and the general transcription factors.