How is O2 (oxygen) transported across the lung membrane?
a. by osmosis
b. by pinocytosis
c. by diffusion
d. via a carrier lipid
e. via a carrier protein
c
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Miguel is a 25-year-old jogger with a target heart rate of 125 bpm. His resting pulse is 70 bpm. His blood volume is approximately 6.8 liters. At rest, his cardiac output is 6.3 liters/min.
A. What must his stroke volume be? B. What might his EDV and ESV be? C. During his workout, his heart rate increases to 125 bpm and his cardiac output to 12,500 mL/min. Do his SV, EDV, and ESV change with exercise?
Air entering the body is filtered, warmed, and humidified by the
A) lungs. B) alveoli. C) upper respiratory tract. D) lower respiratory tract. E) All of the answers are correct.
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If you were given the sequence of nucleotides in a single gene and the total number of nucleotides was 90 (excluding start and stop signals); how many amino acids would you expect to find in the protein that is made from this gene?
A. 30 B. 90 C. 1 D. 10 E. 0