The student who caught the cold caused by this specific Rhinovirus was exposed to the exact same Rhinovirus 18 months later. What component of the immune system will protect her from getting the same cold again?
a. Plasma cells
b. Antibodies that are "left over" from the last infection
c. Dendritic cells
d. Memory B cells
Ans: d. Memory B cells
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Bulk flow in capillaries is driven by ____
a. gravity b. concentration gradients c. actual blood pressure d. pumping of the heart e. reciprocal exchange with oxygen
Hormones travel in the bloodstream yet only certain cells respond. This specificity is due to the presence of _____ in the target cells
1.cell marker proteins 2.channel proteins 3.protein receptors 4.transport proteins
Henry has the sickle-cell trait. Why might it be a bad idea for him to go on that hiking vacation that is being planned for the high Andes?
What will be an ideal response?
RFLPs can be used to establish parent-offspring relationships because, assuming that two parents are heterozygous for different sets of RFLPs, a child will have
a. four RFLPS, represented by two identical RFLPs from each parent. b. two different RFLPs, one from each parent. c. four RFLPS, represented by two different RFLPs from each parent. d. two identical RFLPs, one from each parent. e. two different RFLPs, both from one parent.