Answer the following questions true (T) or false (F)
1. Louis Pasteur is considered the Father of Microbiology because of the many carefully conducted experiments and observations he made with microbes.
2. Gene therapy is a modern approach to preventing infectious disease.
3. Koch's postulates can be used to determine the causes of infectious diseases.
1. TRUE
2. FALSE
3. TRUE
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When antibodies bind antigens, the clumping of antigens results from _____
A) the antibody having at least two binding regions B) disulfide bridges between the antigens C) a complement that makes the affected cells sticky D) bonds between class I and class II MHC molecules E) denaturation of the antibodies
Four of the five answers listed below are related by a similar gland. Select the exception
a. goiter b. deficiency of iodine in the diet c. hypothyroidism d. rickets e. excessive stimulation of the thyroid gland
When are atoms most stable?
A) when they have the fewest possible valence electrons B) when they have the maximum number of unpaired electrons C) when all of the electron orbitals in the valence shell are filled D) when all electrons are paired
If neutral mutations occur at the rate of 0.000005 per individual, the rate of substitu-tions in that population will equal:
a. 2Ne*0.000005. b. (1/2Ne)*0.000005. c. 2Nek?*0.000005. d. 0.000005. e. None of the above.