Before the debrief: three questions

Same concepts as your pre-check, new questions.

A freshwater fish cell sits in fresh water, which has far less salt than the cell. What happens?

Water enters the cellSalt enters the cellWater leaves the cellNothing moves

A cell moves calcium from inside, where there's little, to outside, where there's lots. What kind of transport is this?

Facilitated diffusionSimple diffusionActive transport, using ATPOsmosis

Na+ is tiny. Why can't it cross the bilayer on its own?

Sodium is toxic to the cellIt is too largeIt's charged, and the middle of the bilayer is oilyThe membrane has no holes

Turn your notes into a game where the concept is the rules.