Choose how a cell recognizes only the signals meant for it. Cells may have receptor proteins that respond to light and sound
O
Cells may have receptor proteins in the cytoplasm that respond to touch.
Cells may have receptor proteins of specific shapes that certain molecules fit in
Cells may have receptor proteins that repel certain sig

answer: c.

explanation:

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles

helicase, i think thats it