Biology, 10.06.2021 18:20 Karamatullah
two mutations of the lacI (repressor) gene have different effects. The IW mutation results in constant beta-galactosidase and permease production, even in the absence of lactose. The IS mutation prevents any production of these enzymes, even in the presence of lactose. Provide a possible explanation for the different effects of these two mutations on the repressor protein molecule
Answers: 2
Biology, 22.06.2019 09:00
The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.
Answers: 2
Biology, 22.06.2019 11:00
4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.
Answers: 2
Biology, 22.06.2019 13:30
Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases
Answers: 1
Biology, 22.06.2019 15:30
Kate is studying the transformation from unicellular to multicellular organisms. which metaphor is the most appropriate to apply to the map of the timeline.
Answers: 1
two mutations of the lacI (repressor) gene have different effects. The IW mutation results in consta...
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