Which is the best prediction about the cell structures of muscle cells? A.
Muscle cells have a large volume of cytoplasm so that the cell can easily change shape.

B.
Muscle cells contain a large number of mitochondria in order to provide more energy.

C.
Muscle cells do not have nuclei because they do not need to produce proteins.

D.
Muscle cells are surrounded by cell walls so that they are strong enough to move bones.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d