Internal and External Respiration

Question 1

Why is the rate of CO2exchange roughly equivalent to that O2despite its lower pressure gradient?
A.CO2diffuses much more rapidly out of the cells
B.CO2binds to O2and moves across the respiratory membrane at the same time
C.CO2is more soluble in water than O2
D.CO2is actively transported into the alveoli
E. O2is actively transported into the alveoli

Answer 1

C

Question 2

Dalton’s law states that
A. gas volume and temperature are directly proportional.
B. gas volume and pressure are inversely proportional.
C. the volume of gas that will dissolve in a solvent is proportional
to the solubility of the gas and the gas pressure.
D. in a mixture of gases like air, the total pressure is the sum of the
individual partial pressures of the gases in the mixture.
E. None of the answers are correct.

Answer 2

D

Question 3

What is Henrys law

Answer 3

Volume of gas that will disolve in a solvent is proportional to the solubility of the gas and the gas pressure

Question 4

What law is

“Gas volume and pressure are inversely proportional”

Answer 4

Boyles Law

Question 5

Which of the following is correct in regards to factors that affect diffusion through a membrane?
A.Decreasein thickness of a membrane decreases diffusion
B.Increasein surface area of respiratory membrane decreases diffusion
C.Decreasedpartial pressure difference decrease diffusion
D.Decreasedsolubility of gases decreases diffusion
E. C&D
RMIT

Answer 5

E

Question 6

The process by which dissolved gases are exchanged between the blood and interstitial fluids is
A. pulmonary ventilation.
B. external respiration.
C. diffusion.
D. cellular respiration.
E. breathing

Answer 6

C Diffusion, Also known as internal respiration

Question 7

The distance between the alveolar air space and capillary
endothelium is ________, allowing gases to diffuse ________ between them.
A. short, rapidly
B. long, rapidly
C. short, slowly
D. long, slowly
E. None of the answers are correct
–distance does not affect diffusion rate.

Answer 7

A

Question 8

Q1
Amy Jones is backpacking in the mountains when she contracts a anovel respiratory virus. It causes inflammation and pulmonary edemain the alveoli and eventually destroys the alveolar walls. Identify the 3 factors that would hinder Amy’s ability for efficient gas exchange. Explain your reasoning.

Answer 8

Mountains: Idicates lower partial pressures, thus lower rate of diffusion at alveoli

Inflammation: Indicates decrease in surface area of the membrane walls thus reducing the diffusion between the basement membrane of the alveoli

Pulmonary Edemain: Indicates fluids filling lungs, in increasing the effective membrane wall within the alveoli