1.Why are lymph node entrances smaller in diameter than theexits?
a. This allows for more T cells to work. b.This allows for moreB cells to work. c. This allows for lymph to move quickly throughthe node itself. d. This allows for lymph to move slowly throughthe node itself. e. This allows for even distribution of endocrinehormones.
2. Which of the following is the most important factor inStreptococcus pneumoniae virulence?
a.The presence of a particular Lancefield antigen b. Theproduction of pneumolysin c. The presence of a polysaccharidecapsule d. The ability to lyse red blood cellse. Strain-specific teichoic acids in its cell wall
3. The deer tick is the vector for _____ which invades the _____system of humans
a. Chagasâ disease; circulatory b. African sleeping sickness;nervous c. Western sleeping sickness; circulatory d. toxoplasmosis;lymph e. babesiosis; circulatory
4. Why are Ascaris lumbricoides infections so prevalentin tropical and subtropical regions?
a. Its hooks latch on and will not let go. b. Its eggs hatch outin bloodstream. c. Its cuticle is soft. d. Its eggs remain viablein the moist, warm soil for years e. Mosquitoes are commonthere.
5. Which of the following is the only ssDNA virus that can causedisease in humans?
a. Adenoviruses b. Human herpesvirus 1 c. Varicella d.Human herpesirus 4 e. Parvovirus
1.Why are lymph node entrances smaller in diameter than theexits?
a. This allows for more T cells to work. b.This allows for moreB cells to work. c. This allows for lymph to move quickly throughthe node itself. d. This allows for lymph to move slowly throughthe node itself. e. This allows for even distribution of endocrinehormones.
2. Which of the following is the most important factor inStreptococcus pneumoniae virulence?
a.The presence of a particular Lancefield antigen b. Theproduction of pneumolysin c. The presence of a polysaccharidecapsule d. The ability to lyse red blood cellse. Strain-specific teichoic acids in its cell wall
3. The deer tick is the vector for _____ which invades the _____system of humans
a. Chagasâ disease; circulatory b. African sleeping sickness;nervous c. Western sleeping sickness; circulatory d. toxoplasmosis;lymph e. babesiosis; circulatory
4. Why are Ascaris lumbricoides infections so prevalentin tropical and subtropical regions?
a. Its hooks latch on and will not let go. b. Its eggs hatch outin bloodstream. c. Its cuticle is soft. d. Its eggs remain viablein the moist, warm soil for years e. Mosquitoes are commonthere.
5. Which of the following is the only ssDNA virus that can causedisease in humans?
a. Adenoviruses b. Human herpesvirus 1 c. Varicella d.Human herpesirus 4 e. Parvovirus
