What protein, released by cytotoxic T (TC) cells, perforates a target cell's plasma membrane so that enzymes can enter and fragment the target cell's DNA?
What will be an ideal response?
Perforins
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Pore in plasma membrane that allows water movement.
Choose the letter of the best match: A. abscisic acid B. trichomes C. aquaporin D. endodermis E. stoma
Which of the following does not result from the combination of antibodies and antigens?
a. inactivation of the pathogen b. formation of cytotoxic T cells c. stimulation of phagocytosis d. inactivation of toxins e. activation of the complement system
Bacterial cells pick up a recombinant DNA by taking it in through their outer cell boundaries using a process called
A. transformation. B. transduction. C. cloning. D. plasmid transfer.
Which type of media has ingredients that foster the growth of certain bacteria while suppressing the growth of others?
A) defined B) selective C) synthetic D) complex E) differential