A condition in which microorgan¬isms secrete destructive enzymes and acids that cause inflammation of the surrounding gum is called ________.
A. normal flora
B. shivering
C. hypervariable
D. periodontitis
E. dental plaque
Answer: D
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Which of the following is an example of a population?
1.all of the Bent-nosed clams in a mudflat in Elkhorn Slough, California 2.all of the invertebrates living in a mudflat in Elkhorn Slough, California 3.all of the organisms in a mudflat in Elkhorn Slough, California interacting with the physical and chemical environment 4.all regions of the Earth’s crust, waters, and atmosphere in which organisms live
Four of the five answers listed below are related by a common phase of mitosis. Select the exception
a. chromosomes align at the spindle equator b. sister chromatids become individual chromosomes c. centromeres divide d. the chromosomes move apart e. spindle microtubules shorten, pulling chromosomes toward the poles
Describe the establishment and maintenance of the lysogenic state in the lambda phage
What will be an ideal response?
Four of the five answers listed below are events that can lead to secondary succession. Select the exception
a. a mudslide that destroys a section of a shrubland b. torn down buildings leading to vacant lots c. retreat of a glacier in Alaska d. a fire e. hurricane-damaged coastal marshes