6. It was a warm, sunny day and a light breeze was blowing. E Fill in the blanks with adjectives of quality. Take these adjectives from
those given in the box below:
1. These medicines are
in taste.
2
deeds bring satisfaction to the heart.
wind was blowing at the top of the hill
3. A
4. The rest of the road was flat and
5. Her house is in a
part of the town
6. We should eat
food
7. The
prince came riding a horse,
chilly
djective
noble
shabby
healthy
smooth
handsome
ny tell
31

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

How many atoms are there in 5.70 mol of mg

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.