Which of the following influence(s) the efficiency of an antimicrobial agent?
A. Duration of exposure
B. Temperature
C. Concentration of the agent
D. All of the choices are correct.
Answer: D
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The electronic configuration of the noble gas Neon, which has an atomic number of 10, can be written as follows: 1s22s22p6 . What is the electronic configuration of the noble gas Argon, which has an atomic number of 18?
A. 1s22s22p63s23p6 B. 1s22s62p23s63p2 C. 1s22s83p8 D. 1s22s23p64s25p6
Which of the following statements about Archaeopteryx is FALSE?
A. It is the ancestor of modern birds. B. It shows a combination of reptilian and bird -like features. C. It provided clear evidence of the close relationship between birds and dinosaurs. D. It had a long, bony, reptilian tail. E. It had asymmetrical feathers like a modern bird.
Action potential propagation is the fastest in ____
a. a myelinated axon with a small diameter b. an unmyelinated axon with a small diameter c. a myelinated axon with a large diameter d. an unmyelinated axon with a large diameter e. all myelinated axons regardless of diameter
Figure 23.8
In the photograph of the zygote fungus Pilobolus, what are the dark "hats" atop of the structures?
A. Hypha B. Gametangium C. Zygote D. Sporangium E. Nucleus