A cell membrane is very specific about what it allows across. How does this help the cell?
A. Transport proteins allow only enzymes to pass through the
membrane.
B. The cell works better when it contains fewer proteins.
C. It helps the cell absorb as many different molecules as possible.
D. It is better for the cell if most molecules are prevented from
entering

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.