The more a sample can be diluted and yet still react with antigen, the ______ the concentration of antibodies in that sample and the _______ is its titer.
A.) lower; lower
B.) higher; lower
C.) lower; higher
D.) higher; higher
D.) higher; higher
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The structure at letter "B" is the ____ which ____
a. tongue; produces speech b. epiglottis; closes the larynx c. larynx; produces sound d. epiglottis; closes the esophagus e. pharynx; holds the trachea open
The phenotype in homozygous dominant individuals affected with an autosomal genetic disorder is often more severe
than the ____________________ phenotypeFill in the blank(s) with the appropriate word(s).
What is the final electron acceptor in cellular respiration?
A) ATP B) Carbon dioxide C) NADH D) Oxygen E) FADH2
The function of a sperm cell's acrosome is to
A) carry the sperm's nucleus. B) fuse with the jelly coat of the egg cell. C) provide enzymes that help the sperm penetrate the egg. D) provide the fuel that powers the sperm.