Plasma cells and memory cells are types of ________ lymphocytes; both types of cells secrete proteins called ________ as part of the immune response
Fill in the blank(s) with correct word
B; antibodies
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Assume that an mRNA molecule beginning with an AUG is made that is complementary to this DNAsequence:3
'?CTTACATGGCATCC?5' See the genetic code table above. The third codon (counting the start codon as the first codon) directs incorporation of which amino acid in the polypeptide?
a. cysteine b. methionine c. threonine d. histidine e. arginine
Which statement regarding fungal reproduction is true?
A. Fungi do not produce spores. B. Fungi can only reproduce sexually. C. Many fungi can reproduce either sexually or asexually. D. All fungi can only reproduce asexually.
Identify the site indicated by the arrow in the diagram
a. complement binding site of an antibody b. antigen binding site of an antibody c. MHC binding site of an antigen d. complement binding site of T cell receptor e. MHC binding site of a T cell receptor
The human immunodeficiency virus (HIV) cripples the functioning of the adaptive immune system because it selectively infects and destroys one particular class of cells, which are required for mounting a vigorous immune response to a variety of foreign pathogens or cancer cells. What cell is the most likely target of the HIV virus?
A. Helper T cells B. Cytotoxic T cells C. Neutrophils D. Suppressor T cells E. Natural killer cells