The resting potential of a typical neuron is approximately +70 mV
____________________ Indicate whether the statement is true or false.
F, -70
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As part of your research project, you travel to an island to learn more about the habitats and relationships of flies, spiders, and centipedes. You and your assistant plot out five different areas on the island and count the numbers of flies, spiders, and centipedes living in each plot. Your results show the following: Plot Flies Spiders Centipedes1300254242617103147152147397805791393Based in the information provided, the best explanation for the low numbers of spiders and flies in plot 5 is:
A. centipedes prefer spiders to flies. B. there were not enough flies to support a large centipede population. C. centipedes are actively consuming flies and spiders. D. there were not enough spiders to catch and consume all the flies.
Fever is beneficial during viral infection because the higher temperature
A) inactivates interferons. B) increases vasodilation, contributing to inflammation. C) increases sweating and consequently the barrier effect. D) prevents viral infection of fibroblasts. E) increases the effectiveness of interferons and phagocytes.
Which of the following pathogen agents is multicellular?
A) viruses B) prions C) protozoans D) helminths E) bacteria
Chemicals, secreted by soil fungi, which inhibit the growth of bacteria, are known as _____
A) antibodies B) aflatoxins C) hallucinogens D) antigens E) antibiotics