Type IV pili are involved in
A) attachment of cells to surfaces.
B) twitching motility.
C) pathogenesis.
D) attachment to surfaces, twitching motility, and pathogenesis.
Answer: D
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Consider the following excerpt of a figure from your text (Fig 31.9). Keep in mind that auxin
retains or loses a proton depending on its location in the plant stem. For each of the following statements, indicate (by placing a letter in the blank) whether after an auxin molecule has diffused into a cell it would then move a. away from the meristem b. toward the meristem c. have no movement in any direction PIN proteins are located on the lateral side of the cell membrane only _____ What will be an ideal response?
Stomata close as a result of water moving into guard cells
____________________ Indicate whether the statement is true or false.
Selective reabsorption of glucose and amino acids occur in the ________ of the nephron.
A. collecting duct B. glomerulus C. distal convoluted tubule D. loop of the nephron (loop of Henle) E. proximal convoluted tubule
RNA was probably the first molecule used to encode genetic information; the use of DNA came later. This is due to RNA's inherent stability and its ability to store information more accurately than DNA.
Answer the following statement true (T) or false (F)