What is the result of a decrease in lung compliance in the airways?

Which generations of the tracheobroncial tree are the sites of gas exchange? A. 4-9 B. 16-19 C. 20-23 D. 0-3

How many lobes does the left lung have? A. 1 B. 2 C. 3 D. 4

The pleural pressure is always below atmospheric pressure during both inspiration and expiration.

What is the difference between the parietal pleura and the visceral pleura?

The antidepressant medication Celexa is a racemic mixture of two stereoisomers, but only (S)-citalopram has the therapeutic effect. A stereochemically pure preparation of (S)-citalopram is sold under the trade name Lexapro. Which is true about the medications?

Briefly explain how the quaternary structure of this protein is arranged.     

A peptide has the sequence Gln-His-Ser-Glu-Gly-Arg-Met Hint: Gln is glutamine.  Calculate the net charge of the molecule at pH 3.  Show how you arrived at the answer. 

If the enzyme-catalyzed reaction E + S ⇋ ES ⇋ E + P is proceeding at or near the Vmax of E, what can be deduced about the relative concentrations of S and ES?

What relative values of KM  and kcat  would describe an enzyme with a high catalytic efficiency?