Keratinocytes
a. form the outer protective layer of the skin.
b. secrete interleukin 1.
c. present antigen to helper T cells.
d. both (a) and (b) above.
e. all of these answers.
D
You might also like to view...
Which of the following is an example of positive feedback?
A. Increasing heart rate with activity B. Sweating when hot C. Forming a blood clot when bleeding D. Eating when hungry
When one glucose molecule is fully oxidized, how many molecules of CO2 result?
A. 6 B. 2 C. 1 D. 3
While standing, looking up at the stars requires ________
A) dorsiflexion of the neck B) hyperextension of the neck C) abduction of the neck D) elevation of the mandible E) extension of the neck
________ accounts for approximately 60% of the plasma proteins and are active in maintaining pH and osmotic concentration gradients.
A. Globulin B. Fibrinogen C. Albumin D. Fibrin