Which lymphocytes lack specificity for antigen and attack cancer cells and virus-infected cells?
A. Helper T cells
B. Natural killer (NK) cells
C. Delayed hypersensitivity T cells
D. Cytotoxic T cells
E. Suppressor T cells
Answer: B
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Hexokinase is an enzyme that binds specifically to glucose and converts it into glucose 6-phosphate. The activity of hexokinase is suppressed by glucose 6-phosphate, which binds to hexokinase at a location that is distinct from the active site. This is an example of.
A. feedback inhibition. B. competitive inhibition. C. cofactor binding. D. allosteric activation.
Genes for which of the following may be transferred between Fecal Bacteria?
a. Toxin Production b. Fimbriae c. Capsules d. Hemolysins e. All of the Above
Viruses that attack prokaryotes are called
A) bacteriophages. B) prions. C) human pathogens. D) viroids. E) host cells.
Individuals of a(n) __________ share a gene pool.
Fill in the blank(s) with the appropriate word(s).