The attraction of leukocytes to the area on inflammation is referred to as
A. parasitism.
B. infection.
C. phototaxis.
D. chemotaxis.
D
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Answer the following statements true (T) or false (F)
1. Hormones must bind a receptor to elicit a cell response, regardless of whether they operate locally or at long distances. 2. Auxin is a plant hormone that causes cells to shorten and allow plant growing tips to move toward the sun. 3. In terms of cell signaling, estrogen in animal cells works in a similar fashion as the plant hormone auxin via binding to intracellular receptors. 4. G proteins and Ras are activated when bound to GDP.
If the decolorizer is left on too long in the Gram-staining procedure, gram-positive organisms will be stained ________ and gram-negative organisms will be stained ________.
A. purple; colorless B. purple; blue C. purple; pink D. pink; pink
Which are main colors of light absorbed by rod
cells?
a. red, green, blue b. blue, yellow, red c. yellow, orange, brown d. green, blue, white e. none of these colors of light are absorbed by rod cells
All of the following are strictly necessary for infectious organisms infecting a host, EXCEPT:
A. Evasion of Host defences B. Multiplication and Spread C. Entry D. Disease E. Shedding from body