A pathologist working in the lab observed a liver cell that had a very prominent endoplasmic reticulum. The cell also had a proportionately larger smooth endoplasmic reticulum than rough endoplasmic reticulum. Which of the following is a plausible explanation for the purpose of a larger amount of smooth endoplasmic reticulum?

It is producing proteins for glycolysis and ATP generation.
It is packaging signal hormones for export out of the cell.
It is detoxifying drugs and toxins with hydroxylating enzymes.
It is folding membrane-bound proteins bound for the plasma membrane.

the fossil record provides evidence of a common ancestor to many species.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.