What is the correct order in bacterial antigen
processing and presentation?
1. lysosomal enzymes digest the bacterium into
molecular bits
2. the antigen-MHC complex is displayed on
the cell surface
3. the endocytic vesicle fuses with a lysosome
4. a bacterium is engulfed by a phagocytic cell
a. 4-3-1-2
b. 4-3-2-1
c. 3-4-2-1
d. 3-4-2-1
e. 2-4-3-1
A
You might also like to view...
In Drosophila embryos, the anterior compartment of a segment overlaps with the posterior compartment of a parasegment
Indicate whether the statement is true or false
produces short sequences of RNA, which allows polymerase to synthesize a new strand of DNA.
A. DNA primase B. DNA helicase C. DNA polymerase D. DNA topoisomerase E. DNA ligase
How does a gastric bypass lead to patient losing weight?
A. The small intestine is bypassed by the surgery so no absorption happens. B. The large intestine is bypassed by the surgery so no absorption happens. C. Gastric fluids are being added to the stomach to improve digestion. D. The stomach is reduced in size so patients eat less.
All of the following are teratogens except _____
1. thalidomide 2. tetracycline 3. medical X-rays 4. Toxoplasma gondii 5. alcohol