Shown below is a hypothetical reaction pathway where both E and H can be produced from compound A. Imagine that both compounds E and H are useful to cells, but ЕЗ E4 C D E E2 compound H is toxic above...

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Extracted text: Shown below is a hypothetical reaction pathway where both E and H can be produced from compound A. Imagine that both compounds E and H are useful to cells, but ЕЗ E4 C D E E2 compound H is toxic above a certain concentration. The best way to benefit the cells is for: E1 В E5 E6 E7 O H to allosterically inhibit enzyme ES above the threshold concentration O E to allosterically activate enzyme E2 above the threshold concentration O E to allosterically inhibit enzyme ES above the threshold concentration O H to allosterically activate enzyme E2 above the threshold concentration QUESTION 8 Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts? O Mitochondria are aerobic. Chloroplasts are photosynthetic. O Aerobic bacteria evolved before photosynthetic bacteria (cyanobacteria). O Some protists have separately evolved their own plastids (chloroplast-like structures) through endosymbiosis of cyanobacteria, or even through endosymbiosis of photosynthetic protists. O All Eukaryotes have mitochondria; only a subset of Eukaryotes have chloroplasts. 2. QUESTION 9 Imagine that you are working in a pharmaceutical lab testing the effects of novel compounds on immune cells called macrophages. You discover one that causes an Increase in the size and extension of the pseudopods that initiate amoeboid cell movement. This compound most likely: O Inhibits tubulin's catalytic activity O Increases actin's catalytic activity O Increases tubulin's catalytic activity O Inhibits actin's catalytic activity P Type here to search Home F9 End F10 PgUp PgDn F12 PrtScn 11