Question

pathogens 34. Which of these is NOT a way that antibodies protect the body from a) opsonization of pathogen b) neutralization of toxins c) activation of complement d) inducing apopotosis of body cells 35. This type of immunity lasts only as long as the life of the antibody proteins (a few weeks to a few months at most). a) Passive. b) Artificial. c) Natural. d) Active. e) Innate 36. A primary humoral response (as compared to a secondary humoral response, a primary response) a) is called an anamnestic response. b) is longer-lasting. c) produces a higher ratio of IgM/IgG. d) develops more quickly e all of the above are true of primary humoral responses 37. Which choice correctly matches all vaccines to an example or description? L. Conjugated IL. Live attenuated III. Nucleic acid IV. Toxoid W. Used for diphtheria prevention X. Measles and chickenpox vaccines, for example Y. West Nile vaccine for horses, for example Z. Haemophilus influenza type b (Hib) vaccine, for example a) I-Y b) I-Z c) i-w d) -Y II-W Il-x II-Z lI-X IV-w IV-x IV-w 38. Which of the following is an advantage of a subunit vaccine? a) These vaccines are safer than live attenuated or killed vaccines. b) Subunit vaccines are more likely to produce lifelong immunity from a single dose than live attenuated vaccines. c) Subunit vaccines produce more of a cellular immune response than DNA vaccines. d) Subunit vaccines are the oldest and best-understood category of vaccines, since they were the type of vaccine used by Jenner and Pasteur. All of the above are advantages of subunit vaccines. e)

Answer 1

34.
Option D is correct.
Antibodies cause opsonization, neutralization of pathogens. They also activate complement proteins.

35.
Option A is correct.
Passive immunity involves the introduction of fully matured antibodies into an individual's blood stream. It is active only till the antibodies are present in the blood.

36.
Option C is correct
The primary immune response is characterized by high IgM/IgG ratio.

37.
Option is B correct.
Live attenuated vaccine for measles.
Toxoid vaccine for diphtheria.
Hib vaccine is a conjugated vaccine.
Nucleic acid vaccine for West Nile virus.