Complete the major organic product of the following reaction. Note, R denotes the rest of the protein chain where this cysteine residue is attached to. A portion has been pre-drawn for your convenience. Be sure to draw both the dashed and wedged bond on the stereocenter. oo NH H -NH -NΗ ts-CoA + COA-SH 's—COA H + -> NΗ. NH- SH Cysteine residue Acetyl-CoA

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.