The substrate in the Simmon's Citrate Agar is
A. ammonium citrate
B. potassium citrate
C. ferric citrate
D. ferrous citrate
E. sodium citrate
Ans: E. sodium citrate
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Which creatures belong to the Phylum Platyhelminthes? Check all that apply.
_____ planarians. _____ monogeneans. _____ tapeworms. _____ trematodes. _____ ctenophores.
Which of the following statements about the
testes is FALSE?
a. The testes produce testosterone. b. The testes produce sperm. c. Semen is stored in the testes. d. An epididymis is coiled on each testis. e. The testes are located in the scrotum
Which characteristic is LEAST accurate about endospores?
a. They can be destroyed with boiling water. b. They are resistant to acids. c. They can withstand irradiation. d. They can remain viable for millions of years. e. They can withstand drying out.
A small amount of antigen is injected under the skin of a patient. After 30 minutes there is no apparent change at the injection site, but 36 hours later the patient reports that the area is red and swollen. This type of response is due to
A) type I hypersensitivity. B) type II hypersensitivity. C) type III hypersensitivity. D) type IV hypersensitivity. E) immunodeficiency.