Scientists set up ___ and then record
to be tested during an experiment,
And then record ___ as they conduct the experiment

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Why is it incorrect to say that mitochondria function only as energy factories with cell

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.