Depletion of clotting proteins from the serum leads to the uncontrollable hemorrhaging seen in ________ infections
A) yellow fever virus
B) malaria
C) dengue virus
D) Ebola virus
E) Epstein-Barr virus
D
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An important grazer of kelp plants is the:
a. octopus. b. kelp bass. c. sea urchin. d. sea otter. e. sea anemone.
In order to be detected by a T cell, the class I major histocompatibility (MHC) molecule of infected cells must go through the process of
A) antigen presentation. B) complement activation. C) phagocytosis. D) antibody binding. E) perforin incorporation.
What is the function of reverse transcriptase?
a) It catalyzes the formation of a polypeptide from an RNA template. b) It catalyzes the formation of DNA from a polypeptide template. c) It catalyzes the formation of RNA from a polypeptide template. d) It catalyzes the formation of RNA from a DNA template. e) It catalyzes the formation of DNA from an RNA template.
Identify which of the following feature(s) are found in the cnidarians but not in the comb jellies.
A. They contain a capsule called a nematocyst. B. They are free-swimming invertebrates. C. Much of the body is composed of a jellylike substance called mesoglea. D. These species can be found in the marine environment. E. They produce movement by the beating of cilia.