The ________ form the base of a typical antibody molecule.
A) variable segments of the heavy chains
B) constant segments of the light chains
C) variable segments of the light chains
D) constant segments of the heavy chains
E) constant and variable segments of the light and heavy chains
D) constant segments of the heavy chains
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All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata except the
A) olfactory epithelium. B) medullary chemoreceptors. C) aortic sinuses. D) carotid sinuses. E) All of the answers are correct.
Which of the following structures is visible to the naked eye?
A) Taste pore B) Lingual papilla C) Taste hair D) Taste (gustatory) cell E) Taste bud
Erythrocytes
a. secrete fibrinogen needed for clotting b. secrete plasminogen that is converted to plasmin and dissolves a clot c. engulf iron to make hemoglobin d. possess a chemical for holding oxygen and CO2 e. have characteristics a and d
The gray matter in the CNS consists of parts of neurons not covered with myelin
Indicate whether the statement is true or false