Which of the following releases substances that
initiate blood clotting?
a. lymphocytes
b. basophils
c. erythrocytes
d. neutrophils
e. platelets
Answer: e
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Answer the following statements true (T) or false (F)
1. One common feature with G-protein coupled, enzyme-linked, and growth factor receptors is that their activation leads to activation of protein kinases. 2. Cyclic AMP activates protein kinase C in producing a cell response. 3. If IP3 binds a Ca2+ ligand-gated ion channel in the endoplasmic reticulum, then cytosolic Ca2+ levels will rise in the cell. 4. If epinephrine increases glycogen metabolism in muscle cells, it would have the same function in brain cells.
A(n) ________ is a ring of coral reefs and islands surrounding a lagoon that is formed when a volcanic mountain subsides beneath the surface
Fill in the blank(s) with correct word
Which of the following statements about the protein quality control system in the ER is false?
(a) Chaperone proteins help misfolded proteins fold properly. (b) Proteins that are misfolded are degraded in the ER lumen. (c) Protein complexes are checked for proper assembly before they can exit the ER. (d) A chaperone protein will bind to a misfolded protein to retain it in the ER.
The causative agent of Lyme disease is
A) Borrelia hermsii B) Ixodes scapularis C) Leptospira interrogans D) Ixodes pacificus E) Borrelia burgdorferi