B cells operate like __________, while cytotoxic T
cells act like __________.
a. spies; informers
b. assassins; combat experts
c. ninjas; assassins
d. informers, ninjas
e. assassins; spies
Answer: b
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In the figure above, which of the following statements is true?
A) All of the species of insects shown are in the order Hymenoptera. B) There are no true mimics in the insects shown. C) All of the insects are displaying Batesian mimicry. D) Half of the six insects shown are harmless.
Explain the Calvin cycle process that produces a full molecule of glucose and regenerates the ribulose bisphosphate molecule
What will be an ideal response?
Which statement about decomposers is FALSE?
a. They act with detritivores to break down and recycle organic matter. b. They are microbial heterotrophs. c. They include bacteria but not fungi. d. They use the products of decomposition to supply themselves with energy. e. They are also called saprotrophs
Which of these plant tissue types is composed of hollow nonliving tracheids and vessel elements that transport water and nutrient minerals from the roots to the leaves?
A. parenchyma B. phloem C. xylem D. collenchyma E. sclerenchyma