Is antigenic shift alone likely to lead to influenza pandemics?
A. Yes-ONLY antigenic shift can lead to the large-scale mixing of gene elements required to produce a pandemic flu strain.
B. No-ONLY antigenic DRIFT can lead to the large-scale mixing of gene elements required to produce a pandemic flu strain.
C. Perhaps-but it would most likely be a mixture of antigenic shift AND drift that would result in a pandemic strain.
D. No-antigenic SHIFT is responsible for changes in the hemagglutinin protein, while antigenic DRIFT is responsible for changes in the neuraminidase protein. You must have changes in both to lead to a pandemic strain.
C
You might also like to view...
When one species reduces or adversely affects the population of another, but the affected species has no influence in return, the relationship is referred to as ________
Fill in the blank(s) with correct word
Which tissue is part of the wood of a tree, not the bark?
A) cork B) cork cambium C) xylem D) phloem
Most of the carbon dioxide released from cells is transported in the blood as
A) carbohydrates, such as glucose. B) dissolved carbon monoxide. C) bicarbonate ions in the plasma. D) carbon dioxide attached to hemoglobin.
During glycolysis, a glucose molecule will be split into two, three-carbon ________ molecules
A) ATP B) pyruvic acid C) oxaloacetatic acid D) acetyl CoA