It is made of lipids bound together called phospholipids and it is located in the plant cell and it it semipermeable meaning it can allow and reject
So here we have two heterozygous organisms that will mate. You can put them into a Punnet square, just to be sure of your answers and to find all possible genotypes :
R r
R RR Rr
r Rr rr
So you have RR, Rr and rr as your possible genotypes.