In nature, RNAi protects cells against infection by what kind of pathogen?
What will be an ideal response?
dsRNA viruses or double-stranded RNA viruses
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As adults, insulin signaling through its receptor kinase enables virtually every cell in our body to transport glucose across the plasma membrane into the cytosol. Insulin also induces some cells to divide
Based on what you know about cell signaling, discuss the sequence of events from the time when insulin encounters the cell to the cell's reaction, and how the signal comes to an end. What will be an ideal response?
Where are chondrocytes located?
a. woven through collagen b. in muscle fibroblasts c. in cartilage lacunae d. within blood plasma
For which of the following pHs, is the
hydroxide ion concentration greater than the hydrogen ion concentration?
a. 1 b. 3 c. 5 d. 7 e. 9
Place the portions of the large intestine in the correct order from entry to exit.
(1) ascending colon (2) cecum (3) rectum (4) descending colon (5) transverse colon (6) sigmoid colon (7) anus A. 1,4,5,6,2,3,7 B. 2,1,5,4,6,3,7 C. 1,5,4,6,2,7,3 D. 2,6,5,4,1,7,3 E. 1,5,4,6,2,3,7