A nucleotide consists of
A) three sugars for every phosphate.
B) three phosphates for every sugar.
C) one deoxyribose sugar, one nitrogenous base, and one phosphate group.
D) three DNA bases.
C) one deoxyribose sugar, one nitrogenous base, and one phosphate group.
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Monocots and eudicots differ in how xylem and phloem are distributed in ground tissue, in the number of petals in
flowers, and in the number of ____________________. Fill in the blank(s) with the appropriate word(s).
Explanation of the evolution of eukaryotic organelles by phagocytosis of prokaryotes.
What will be an ideal response?
Different viruses have different properties that affect how the immune system responds to them and consequently how vaccines must be developed.Every year a new version of the flu vaccine is made using a mixture of strains. The strains are chosen based on surveillance and analysis by experts from the FDA, WHO, and CDC. For other diseases however, such as varicella (chickenpox), the same vaccine is used continually and repeated vaccinations are not necessary. What do you conclude is the important difference between the influenza virus and the varicella zoster virus with regards to vaccinations?
A. Influenza envelope proteins are bound by IgM, while varicella envelope proteins are bound by IgG. B. Influenza virus is transmitted through aerosol droplets in the air, while varicella can be transmitted via skin secretions. C. Influenza virus has a much higher mutation rate than varicella, leading to frequent antigen changes in the coat proteins. D. Varicella is attacked by the innate immune system, while influenza is attacked by the acquired immune system.
________ pathways are those that function both catabolically and anabolically.
Fill in the blank(s) with the appropriate word(s).