There is a large number of mitochondria in cardiac muscle cells because cardiac muscles need the mitochondria to: 1)work harder and longer.
2)maintain their shape.
3)maintain their color.
4)be attached to the ribs.

Match the description of each organism to the appropriate category

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation