A titratable group is in the active site of an enzyme and must be protonated for the enzyme to function. Assume that the group has a pKa of 6.5 and that the activity is proportional to the fraction of molecules in the protonated state. Which of the following are true? 1. At pH 9.0 close to 100% of the enzyme molecules are active.
2. At pH 9.0 close to 100% of the enzyme molecules are inactive.
3. At pH 6.5 the enyzme is 50% active.
4. At pH 6.8 the enzyme is 66.6% inactive.5. At pH 7.2 there are about 5 inactive enzymes for every active enzyme.

1. label high-pressure areas with the letter h. 2. label low-pressure areas with the letter l. 3. over which area(s) would you expect to see rain or snow? 4. over which area(s) would you expect to see clear skies? 5. draw arrows around the h on the map to show the wind direction. 6. draw arrows around the l on the map to show the wind direction. 7. imagine that you live in maine. currently there is a high-pressure area over maine. if a low-pressure area moves in, how will the direction of the wind change? 5. draw arrows around the h on the map to show the wind direction. 6. draw arrows around the l on the map to show the wind direction. 7. imagine that you live in maine. currently there is a high-pressure area over maine. if a low-pressure area moves in, how will the direction of the wind change? 8. imagine that you live in colorado. currently there is a low-pressure area over colorado. if a high-pressure area moves in, how will the direction of the wind change? 9. according to the map, where would the strongest winds be expected? (refer to the lesson if needed.)

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

Several billion years ago which gas was the least prevailant in the atmosphere