Before a B lymphocyte can secrete antibodies it must transform into which of the following?
A. Antigen-presenting cell
B. Stem cell
C. Reticular cell
D. Helper T cell
E. Plasma cell
Answer: E
Anatomy & Physiology
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The cells that respond to environmental stimuli are ________.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
Platelets are pinched off from giant multinucleated cells in the bone marrow called
A) erythroblasts. B) normoblasts. C) megakaryocytes. D) myeloblasts. E) lymphoblasts.
Anatomy & Physiology
Phospholipids are described as
A. polar.?B. nonpolar.?C. amphipathic.?D. amphiprotic.
Anatomy & Physiology
Which muscle contracts when one smiles?
A. Frontalis B. Zygomaticus major C. Depressor anguli oris D. Orbicularis oris E. Buccinator
Anatomy & Physiology