A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light,

while organelles in the lighter fraction could produce ATP in the dark. The heavier and

lighter fractions are most likely to contain, respectively,

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.