________ cells can lyse and kill cancer cells and virus-infected body cells before the immune system is activated.
What will be an ideal response?
Natural killer
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The release of intracellular materials by a vesicle at the cell surface is called
A) osmosis. B) active transport. C) exocytosis. D) endocytosis. E) an ion exchange pump.
Ongoing research supports the role of vaults in nucleus-to-cytoplasm transport, but their cargo has not been determined
a. True b. False Indicate whether the statement is true or false
Which test tubes were used to determine the optimal pH for lipase activity?
A) tubes 2, 3, and 4 B) tubes 1, 2, and 3 C) tubes 2, 5, and 6 D) tubes 1, 5, and 6
During the process of implantation, the inner cell mass (ICM) gives rise to three embryonic membranes. Which of the following is not one of these membranes?
A) amnion B) yolk sac C) allantois D) chorion