Antigens and MHC

Question 1

What is the earliest time that newborns can produce their own bodies?
a. 0 to 3 months after birth
b. 6 to 9 months after birth
c. 3 to 6 months after birth
d. 9 to 12 months after birth
e. none of the above

Answer 1

b. 6 to 9 months AFTER birth

Question 2

All immunogens are antigens, and all antigens are immunogens.
a. true
b. false

Answer 2

b. false
- all imunogens are antigens but NOT all antigens are immunogens

Question 3

Antigens have the capacity to stimulate antibody production.
a. true
b. false

Answer 3

b. false
- Immunogens have the capacity to stimulate antibody production

Question 4

The following are factors influencing the immune response except:
a. route of inoculation
b. health status of host
c. dose
d. foreignness
e. none of the given choices

Answer 4

d. foreignness
- foreignness is a characteristic of immunogen
- factors influencing immune response include: Health status of host, Dose, Route of inoculation, Age, and Genetics (mnemonic: High-DRAG)

Question 5

The following are characteristics of an immunogen except:
a. chemical complexity
b. low molecular weight
c. digestibility
d. availability and accessibility of reactive sites
e. all choices are characteristics of immunogen

Answer 5

b. low molecular weight
- must be high molecular weight (> 10,000 Da / > 10 kDa)
- characteristics of immunogen include: Foreignness, Chemical or molecular complexity, High molecular weight, Availability and accessibility of reactive sites, Digestibility (mnemonic: F-CHAD)

Question 6

Fastest route of inoculation for a pathogen to cause infection and for immune system to be activated.
a. intramuscular
b. intradermal
c. intravenous
d. intraperitoneal

Answer 6

c. intravenous

Question 7

Identification: Blood type of Africans that are resistant to malarial infections.

Answer 7

Fy(a-b-)

Question 8

A person can produce antibodies against his self-antigens.
a. true
b. false

Answer 8

b. false