A sample was collected from a computer keyboard and a toilet seat using two separate cotton swabs. Then, each swab was wiped on a petri dish and left to grow for 5 days. *Which location had the most bacteria present? The computer keyboard or the toilet seat?

*What steps can you take to prevent the spread of bacteria in the office setting?

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.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

Consider the story you just read. all but one of the choices below indicate that something is living.