A mammalian fetus possesses a mutation that causes it to only synthesize adult hemoglobin. How will this mutation affect the fetus? Select all correct choices
A. The fetus will derive more oxygen from its
mother's bloodstream.
B. The fetus will derive less oxygen from its
mother's bloodstream.
C. The fetus will derive the same amount of
oxygen from its mother's bloodstream as if it
produced fetal hemoglobin.
D. The fetus will not derive oxygen from its
mother's bloodstream, as oxygen is provided
by the amniotic fluid.
E. The fetus will not derive oxygen from its
mother's bloodstream, as the blood of the
fetus does not come into contact with
maternal blood.
B
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Specific immunity in the extracellular fluid is provide by mainly
A. IgG and IgM B. IgM and IgD C. IgA and IgE D. IgD and IgA E. IgE and IgG
As a cell prepares to divide, it makes copies of each chromosome to form ____
a. sister chromatids b. sister chromosomes c. chromatin d. genes e. centromeres
Certain new cancer therapies deal with the inhibition of angiogenesis (formation of blood vessels). How would inhibition of blood vessel formation be beneficial in terms of treating cancer?
What will be an ideal response?
Specific recognition between cell types such as leukocytes and endothelial cells of blood vessels is mediated by cell-surface glycoproteins called
a. selectins. b. fibronectins. c. spectrins. d. porins.