When is gene expression blocked in the lac operon system?

If the weather is warm and dry what changes would a cold front bring

Which snail will survive better in an intertidal zone : periwinkle or green turban

If carbon dioxide is completly removed from a plants enviroment what would you expect to happen to the plants producution of high energy sugars

A substance has a half-life of 100,000 years and an initial mass of 1,000 grams. how many years will pass before only 250 grams of the substances parent material is left?

Which Organelle breaks down rugs molecules that supply energy to the cell

Which has more kinetic energy, a feather floating through the air or a rock on the ground?

The topmost zone near the shore of a lake or pond is the living are food for other creatures such as turtles, snakes, and ducks zone. The species A. Olimnetic B. Profundal C. littoral D. none of the above

In a food web, a bird eats plant-eating insects but also eats berries, where does the bird fit in the food web? a. both as a primary and secondary consumer b. as a primary consumer c. as a secondary consumer

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?

Iodine solution is added to a cake solution. The color changes to purple. Based on this result, what biological molecules are present in the cake solution?