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Which cell membrane modification is only found on sperm cells? 

Sleep is very rhythmic;  this rhythm is known as ______, and is genetically programmed to regulate your sleep/wake cycle.

______________________ is an observable action.

On their 25th anniversary, Carol tells her husband Charles, “You know, dear, I remember our first kiss very well.”  In remembering their first kiss, Carol is retrieving information from her ________ memory.

The ____________ variable is the one a researcher is manipulating or changing in an experiment.

Polar molecules, like water, result when electrons are shared ___________.

Define psychology.

________ refers to a lack of sensory stimulation.

When ambient temperatures increase (e.g., it gets warmer), what would be the body’s appropriate response?

The cell membrane is _____________ in that it regulates the transport of substances into and out of the cell.