This cross will yield four phenotypes in the 1: 1: 1: 1 ratio:
rryy x rryy
rryy x rryy
rryy x rryy
rryy x rryy

The answer would be:

RrYy x rryy

Here's more about your question:

The Punnet square for this cross is attached below.

As you can see the results will be:

RrYy = 4/16 = 1/4

rrYy = 4/16 =  1/4

Rryy = 4/16 = 1/4

rryy = 4/16 =  1/4

All four phenotypes have a 1/4 chance of occurring. So the ration between them would be 1:1:1:1

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.