Which of the following statements describes friction correctly? Friction is the resistance to movement due to interaction between surfaces
Friction acts on an object only when two solids are in contact with one another
Friction adds energy to an object so that it can move faster
Friction helps an object to move in the same direction that it is moving

answer; blank(1); cervical; blank(2); lumbosacral;

the calvin cycle takes place in the stroma of the chloroplast. carbon dioxide enters the stroma of the chloroplast to combine with the five-carbon compound called ribulose1, 5-biphosphate to form two molecules of a three-carbon compound called 3-phosphoglyceric acid. this reaction is catalyzed by an enzyme called ribulose bi-phosphate carboxylase.