Which organelle is found ONLY in plant cells and NOT in animal cells? Which organelle holds the others in place and helps maintain the shape of the cell? need help! respond asap pls ill give brainliest

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.