What type of membrane proteins form a passageway through the plasma membrane?
A. carrier proteins
B. receptor proteins
C. enzymes
D. channel protein
E. marker molecules
D
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Which of the following is normally the major source of hydrogen ions in the body?
a. Phosphoric and sulfuric acids formed during the metabolism of dietary proteins b. Lactic acid production by the muscles during exercise c. Carbonic acid generated from metabolically produced CO2 d. Natural acids found in foods, such as citric acid e. Fatty acids produced during fat metabolism
Pepsin formation in the stomach is autocatalytic
Indicate whether the statement is true or false
A patient with rheumatoid arthritis of the TMJ feels pain radiating over the parotid region and side of the head. This referral pattern is based on the distribution of which nerve?
A. Auriculotemporal nerve B. Posterior superior alveolar nerve C. Inferior alveolar nerve D. Temporal branch of the facial nerve E. Zygomaticotemporal nerve
The return of molecules from the nephron tubules to the blood is called as ________.
A. secretion B. autoregulation C. filtration D. reabsorption