Scanning electron microscopy (SEM) ________.
a. can be used to view biomolecules at the atomic level
b. requires no special treatment of the specimen
c. provides a three-dimensional image of a cell's surface
d. is used to view internal cellular structure
Answer: c. provides a three-dimensional image of a cell's surface
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In Connell's experiments with the barnacles Chthamalus stellatus and Semibalanus balanoides, the potential distribution of each species is known as the
A. competition zone. B. mortality rate. C. fundamental niche. D. defined mutualism. E. tidal boundary.
An example of a complex carbohydrate is sucrose
____________________ Indicate whether the statement is true or false.
Which of the following is not a difference between endospores and vegetative cells?
A) Vegetative cells are metabolically active, whereas endospores are dormant. B) Vegetative cells are more resilient due to their metabolic activities, whereas endospores are more sensitive to change. C) Vegetative cells normally have enzyme activity, whereas endospores do not show enzymatic activity. D) Vegetative cells stain easily using normal staining protocols, whereas endospores are difficult to stain without special endospore stains
Infection of the skin by Trichophyton rubrum results in raised red scaly patches of skin, a condition known as
A. dermatophytosis. B. candidiasis. C. mucormycosis. D. pityriasis. E. sporothrichosis.