The following are characteristics of Chlamydias except
A. they are gram negative.
B. elementary bodies are the infectious form.
C. reticulate bodies differentiate into elementary bodies.
D. elementary bodies are metabolically active.
E. they are obligate intracellular parasites that need host cells for growth.
Answer: D
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Which of the following choices places the steps of hemostasis in the correct sequence?
a. smooth muscle in the vessel wall contracts plasma proteins form a clot platelets stick together b. platelets stick together plasma proteins form a clot smooth muscle in the vessel wall contracts c. plasma proteins form a clot smooth muscle in the vessel wall contracts platelets stick together d. smooth muscle in the vessel wall contracts platelets stick together plasma proteins form a clot
Four of the five choices listed below are associated
with the theory of dosage compensation. Select the exception. a. ABC model b. X inactivation c. methylation d. XIST gene e. RNA
The two structures of the eye that focus light are the ________ and ________
Fill in the blank(s) with correct word
You've made a hot drink by dissolving a teaspoon of instant coffee and a teaspoon of sugar in a cup of hot water. Which of the following statements is true?
A) You've just prepared an aqueous solution. B) The water is the solute portion of the drink. C) The instant coffee is basic and the water is acidic so they mix well. D) The instant coffee and sugar dissolve because they have no charged regions to repel the partial positive and partial negative regions of the water molecules.