The allantois enlarges to form the ________.
A. urethra
B. urinary bladder
C. kidney
D. ureter
E. gonads
Answer: B
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A vesicle is a small, fluid-filled, raised spot on the surface of the skin
Indicate whether the statement is true or false.
Interleukins do all of the following except
A) increase T-cell sensitivity to antigens exposed on macrophage membranes. B) stimulate B-cell activity, plasma cell formation, and antibody production. C) stimulate inflammation. D) elevate body temperature. E) stimulate collagen synthesis.
The major steps in oxidative phosphorylation include all of the following except
A) removal of hydrogen atoms from a substrate molecule by coenzymes. B) ionization of hydrogen atoms. C) decreasing the energy level of electrons passing through the electron transport chain. D) the breaking of carbon-carbon covalent bonds. E) the acceptance of electrons by oxygen atoms.
Which enzyme is responsible for the hydrolysis of protein to peptide fragments?
a. pepsin b. trypsin c. aminopepsidase d. amylase e. maltase