The optimum temperature for coral formation occurs where the average annual temperatures are between ____ ?C and ____ ?C
a. 18, 20
b. 20, 23
c. 23, 25
d. 25, 27
e. 30, 40
C
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You are studying swimming motility in a pathogenic bacillus. You create mutations in random genes and then test which mutations effect swimming motility by looking at the mutant cells under the microscope
One of the mutant bacteria can not swim anymore, but still rotates around in a one spot when you watch them. Using electron microscopy you discover that some parts of the flagella are still present in the cell wall, but no long flagella are visible. Which gene do you think is mutated (i.e., missing) and which motility-related parts are still present in this mutant? What will be an ideal response?
In regions of the human body that must precisely control what enters or exits tissues, which one of the following is(are) present to ensure adjacent cells are packed close together?
A) basement membrane B) adhesion junctions C) collagen D) tight junctions E) gap junctions
The parasitic disease, caused by an apicomplexan that involves infected cats in its life cycle is
A. cyclosporiasis. B. toxoplasmosis. C. babesiosis. D. cryptosporidiosis. E. None of the choices are correct.
True or False: Neutrophils present in higher- than-normal numbers in blood or at a site of inflammation indicate an active response to a current infection
a. TRUE b. FALSE