Her immune system's recognition of the second infection involves memory _____

A) helper T cells
B) natural killer cells
C) plasma cells
D) cytotoxic T cells


D

Biology & Microbiology

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Some traits evolve for one particular function, but then become co-opted for another function. For example, it is hypothesized that bird feathers originally evolved for thermoregulation/insulation, but then later became adapted for flight

In the text it is suggested that evolution of group hunting resulted in a brain that is able to play the piano or solve calculus problems. Please support or refute this statement. What will be an ideal response?

Biology & Microbiology

According to the theory of evolution, those best adapted to the environment will _____

a. survive and reproduce b. not survive c. produce offspring that are genetically identical to the parents d. have lower fertility rates e. have fewer offspring on average

Biology & Microbiology

An aquifer is most closely related to

a. sea water. b. lake water. c. stream water. d. glacial water. e. groundwater

Biology & Microbiology

Which of the following does NOT have much potential energy?

A) A diver on a springboard B) A glucose molecule C) A ball that has rolled downhill and stopped D) A 9-volt battery E) A water droplet at the top of a waterfall

Biology & Microbiology