Which of these does NOT influence the exchange of gases across the respiratory membrane?
A. the thickness of the membrane
B. the total surface area of the membrane
C. the rate at which each gas diffuses through the fluids
D. the size of pores in the alveoli
E. the concentration gradient for gases across the membrane
Ans: D. the size of pores in the alveoli
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Complete the following statement using the choices below. Air moves out of the lungs when the pressure inside the lungs is
A) less than the pressure in the atmosphere. B) greater than the pressure in the atmosphere. C) equal to the pressure in the atmosphere. D) greater than the intra-alveolar pressure.
The kidneys are the organs that are primarily responsible for maintaining constancy of the volume and electrolyte composition of the internal fluid environment
Indicate whether the statement is true or false
A television network only telecasts shows that specifically carry sensationalized stories on the lives of the rich and famous and their sexual exploits. This is an example of:
A. social learning. B. agenda-setting. C. brain-washing. D. cultivation.
Which of the following is correct about peripheral proteins?
A) They are bound to the inner or outer surface of plasma membrane. B) They have regulatory functions. C) They are also called transmembrane proteins. D) They span the width of the plasma membrane at least one time. E) They outnumber integral proteins.