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Study Guide for Quiz on Ch 3.4 & What’s
Happening in the Cytoplasm
Make sure you know the following:
Dr. Birdley Jelly? (Cytoplasm) Worksheet
What’s Happening in a Cell? Cornell Lecture
Ch 3.4
Know the following vocabulary words: passive
transport, diffusion, concentration gradient,
osmosis, isotonic, hypertonic, hypotonic,
facilitated diffusion, cytoplasm, glycolysis,
molecule, ribosome, glucose, proteins, organelles,
fructose, chemical reactions, ATP, mRNA, tRNA
1.) Describe passive transport.
2.) Water moves into a cell when the solution
surrounding the cell is ____________
3.) What is the term for the diffusion of water
across a semipermeable membrane?
4.) The movement of molecules down a
concentration gradient through transport
proteins in the
cell membrane is a type of
______________________ .
5.) The difference in the concentration of
dissolved particles from one location to another
is called a ______________________
6.) Unlike passive transport, active transport
requires ____________________.
7.) All cells are surrounded by membranes. The
main role of the cell membrane is to
8.) What type of molecule embedded in the cell
membrane allows larger molecules to pass
through the membrane by active transport?
9.) In osmosis, water molecules move between
phospholipids and toward areas that have a lower
concentration of water molecules. Osmosis is a
type of __________________________