Chapter 3 p2 Flashcards
Exam 2
The diffusion of water across a semi-permeable membrane
Osmosis
Chemicals dissolved in water
Solutes
Allows the movement of some things but not others
Semi-permeable membrane
In osmosis, water moves from
High concentration water to Low concentration water
In osmosis, water moves from
Low concentration solutes to High concentration solutes
If concentration of solutes are high, then concentration of water will be
Low
If concentration of solutes are low, then concentration of water will be
High
Three Tonic Solutions
1) Isotonic 2)Hypertonic 3)Hypotonic
Idea type of tonic, solutes inside and outside of cell are roughly equal
Isotonic
Type of tonic, draws water out of cell, cell shrinks
Hypertonic
Type of tonic, water rushes into cell, cell inflates
Hypotonic
Type of tonic, high concentration solutes outside cell (low water) in environment
Hypertonic
Type of tonic, low concentration of solutes out (high water) in environment
Hypotonic
Salt used for food preservation is an example of
Hypertonic environment (draws water out)
Inanimate object that can transfer microbes
Fomite
