The symptoms of tetanus are due to
A) endospore formation.
B) systemic infection.
C) sustained relaxation of muscles.
D) tetanospasmin.
E) inflammation.
D
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In order to protect the integrity of an mRNA in the cytosol of a cell, a(n) ________ is added to the 3' end during RNA processing.
Fill in the blank(s) with the appropriate word(s).
Photosystem II functions before Photosystem I in the linear flow of electrons
a. True b. False
Which of the following is an internal defense in the body’s innate immune system?
a. Antibodies b. B cells c. Memory response d. Natural killer cells
Which piece of evidence would best support the theory of continental drift?
A. Fossils of seed ferns can only be found on North America and Europe but nowhere else in the world. B. Australia, South America, and Africa all share a similar mammalian fauna due to the lineage being present on Gondwana. C. The reptilian diversity on Earth is very different due to the separation of the continents billions of years ago. D. All of the choices are correct.