During an internship at the national institute of health, rupert is asked to examine regulation of the lac operon of e. coli under 4 different conditions. rupert has forgotten what he learned in genetics lab, so has called you for .
using tnt chart below, determine if rupert should expect:

a. the repressor protein (i) to be beund to the operator preventing expression

b. the camp to be high or low

c. lacz to be expressed

d. level of lacz expression

Texas has an impending storm, and california is experiencing a water crisis. match the technologies with the state that can use them to reduce the effects eddies natural hazards. texas is the storm cellar and the wood that is crisscrossed. california is the dam and the storage tanks

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false