No, predators do not only kill the old and sick prey. They will go after any of the prey, including the strong ones and the children. The reason they often go after the old and sick prey is because they're easier to pick off, whether they are on their own or in a pack. Predators will go after any one of the members of their prey, but prefer the old and/or sick as it requires less energy.
The answer to this question is "Dendritic Cells". In addition to m cells, the "Dendritic cells" in the epithelium can capture pathogens directly from the lumen of the gut without disturbing other cells and processes in the epithelium of the epithelial layer.
Answer:y = y = -5x + 2
Explanation:
Y = (y2-y1)(x2-x1) x + b = mx + b (b is the y-intercept)
= (-8+3)/(2-1)x + b = -5x + b
to find b
when x = 0, y=b = 2
(could draw graph to make clear)
this is a straight line: the slope shows that for any x0, y1 = y0 - 5
Digestion of the sugar athelose in this theoretical framework is controlled by an operon that displays both positive control and negative control. Translation of the ath operon is turned on when athelose is available, and accelerated when the bacterium comes up short on glucose and must depend on athelose for vitality.
