The (incubation/morbidity/prodromal) period is the time between infection and the occurrence of the first symptoms or signs of the disease
What will be an ideal response?
incubation
Bloom's Taxonomy: Knowledge
Section: The Nature of Infectious Disease
Learning Outcome: 14.15
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Which of the following statements about mammalian skin is incorrect?
A. The epidermis is an outer layer that provides a water-resistant, protective barrier. B. The dermis is the layer below the epidermis, containing connective tissue, blood vessels and nerve endings, that provides nutrients to the epidermis and a cushion layer for the body. C. Epithelial cells in the epidermis are primarily composed of keratinocytes that protect underlying tissue, and melanocytes that produce pigments. D. A specialized form of extracellular matrix, called the basal lamina, underlies the dermis and separates it from tissues below. E. Fibroblasts in the dermis produce extracellular matrix proteins to make the dermis strong and flexible.
In bacteria, genes that are often used together are controlled by a single promoter. Explain why this is the case
What will be an ideal response?
Helper T cells
A. function in allergic reactions. B. directly destroy target cells. C. activate B cells and other T cells. D. secrete antibodies. E. suppress immune reactions.
A field experiment gives the investigator much more control over the environmental conditions than does a laboratory experiment
Indicate whether the statement is true or false