The letter "F" from the above figure represents
a. complement.
b. MHC markers with antigen expressed to the
surface of a cell.
c. lysosome fusing with a phagosome.
d. plasma membranes fusing.
e. MHC recycling
B
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Paired homologous chromosomes are found at the center of the cell during _____ of meiosis
a. metaphase I b. telophase I c. prophase II d. metaphase II
e. anaphase IIWhat is the interpretation of the following patient results? (normal values) WBC = 25.0 th/uL (5.0-10.0 th/uL), with 78% blasts; CD3 = 83% (60-80%); CD5 = 90% (60-80%); CD10 = 2% (< 1%); CD4 = 85% (30-65%); CD20 = 1% (5-20%); CD34 = 0% (< 1%); CD8 = 87% (10-40%); kappa = 1% (3-15%); lambda = 0% (2-10%); CD19 = 2% (5-20%).
A) normal B) B-cell acute leukemia C) T-cell acute leukemia D) B-cell chronic leukemia E) T-cell chronic leukemia
Sharks
Select one: a. have bone skeletons. b. lack jaws. c. have a keen sense of smell. d. lack the lateral line system of bony fishes. e. do not have paired fins.
Which step constitutes the power stroke of muscle contraction?
A. ADP is released. B. ATP is hydrolyzed, causing myosin to bind another actin subunit. C. The phosphate ion is released, and the myosin head moves back to its original position. D. ATP binds myosin, causing the myosin head to be released from actin