#Question id: 11090
#Unit 7. System Physiology – Animal
An aviator is flying at 30,000 ft where the barometric pressure is 226 mm Hg. He is breathing 100% oxygen, his alveolar PCO2 is 40 mm Hg, and his alveolar water vapor pressure is 47 mm Hg. What is the alveolar PO2 of the aviator (in mm Hg)? (Assume that the respiratory quotient is equal to 1.)
#Question id: 15008
#Unit 8. Inheritance Biology
#Question id: 11073
#Unit 7. System Physiology – Animal
The respiratory passageways have smooth muscle in their walls. Which of the following best describes the effect of acetylcholine and epinephrine on the respiratory passageways?
#Question id: 23836
#Unit 2. Cellular Organization
#Question id: 7213
#Unit 5. Developmental Biology
Following statements are regarding to the early development of C.elegans (expression of PIE-1):
A. Segregation of PIE-1 determinant into the P1 blastomere at the 2-cell stage
B. The sperm centrosome activates the presence of the PAR-3/PAR-6 complex in the posterior of the egg
C. PIE-1 is degraded in the resulting anterior AB cell, it is preserved in the posterior P1 cell
D. PIE-1 is degraded in the resulting posterior P1 cell, it is preserved in the anterior AB cell
Which of the following combination is incorrect?