The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. the upper chambers of the heart are called , and the lower chambers of the heart are called .

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.

In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?