Dietary glucose is transported into a cell against its concentration gradient with the aid of membrane proteins called na /glucose

Na+/glucose symporters.

Explanation:

Na+/glucose symporters helps in transporting the glucose across the membrane. It is a transmembrane protein and glucose transport is an example of secondary active transport Na ions is required to drive the transport of glucose.

As it is a symporter so this protein transport sodium and glucose in the same direction. ATP energy is used to transport the glucose against the concentration gradient. Na+/glucose symporters are present on epithelial cell with binds to both Na and glucose and transport them simultaneously in the epithelial cell. So the right answer is Na+/glucose symporters.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!