The vocal cords are located in the
A) epiglottis. B) pharynx. C) trachea. D) larynx. E) bronchi.
D
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Each antibody has ______ binding site(s); binding of antibodies to a virus particle results in the particles being ________
a. one; disrupted and hydrolyzed b. two; disrupted and hydrolyzed c. two; clumped with other particles d. three; disrupted and hydrolyzed e. three; clumped with other particles
X chromosome inactivation in humans occurs ____
a. after fertilization but before cell division begins b. just after cleavage begins c. at implantation d. gestational week 1 e. just after birth
How do buffers work?
A) They accept and release OH-. B) They accept and release H+. C) They soak up extra acid and base. D) They monitor the blood pH. E) They convert H+ and OH- to water.
What are the two main functions of the nephron loop?
A) Creates a high salt concentration in the renal medulla and reabsorbs salt and water B) Creates a high salt concentration in the renal cortex and reabsorbs some salt and water C) Creates a high glucose concentration in the renal cortex and releases extra salt into the filtrate D) Creates a low salt concentration in the renal medulla and reabsorbs salt and water E) Filters cellular wastes from blood in the capillaries and reabsorbs some salt and water