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Home Q & A Board Biology-Related Homework Help General Biology
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lacerna92 lacerna92
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6 years ago
In a cell-mediated immune response, how does a helper T cell activate cytotoxic T cells?
 
  a. antibodies
  b. cytokine signaling
  c. receptor signaling
  d. via cross-talk with macrophages
  e. neural signaling

Question 2

An animal with bilateral symmetry:
 
  a. has no defined body sides
  b. usually has no body cavity
  c. has body parts repeated around a central axis
  d. has left and right sides and usually displays cephalization
  e. is not typical of animals with a three-layer body plan
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dwood775dwood775
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#1
Posts: 352
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6 years ago
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lacerna92 Author
wrote...
#2
6 years ago
I wish all teachers could be as helpful as you instead of making us do things the complicated way...
wrote...
#3
6 years ago
It really depends on the course, never give up
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