What is the recommended age of vaccination for MMR (measles, mumps and rubella)?
a. 11-12 years
b. 1-4 months
c. Birth-2 months
d. 12-15 months
e. 4-6 years
d
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An individual receives a flu vaccine and is well protected for the current flu season. The following flu season, the individual fails to get another flu vaccine and comes down with the flu
What is the most likely explanation for vaccine ineffectiveness in the subsequent flu season? A) Antibiotic-resistant bacteria were able to overcome the effects of the vaccine. B) The immune system becomes weaker when continually exposed to the same virus contained in the vaccine. C) The flu virus mutated, leading to a new strain of virus that could escape detection by the immune system. D) Most vaccines have a limited lifetime and eventually break down and become ineffective.
In the Galapagos Islands, what led Darwin to suspect that species were not ‘fixed’ throughout time?
What will be an ideal response?
A transport receptor that moves macromolecules from the cytoplasm to the nucleus is called a(n) ____.
a) importin b) receptin c) exhalin d) transportin e) exportin
__________ sampling can be used to estimate the population density for mobile animals and involves capturing and
releasing individuals. Fill in the blank(s) with the appropriate word(s).