Biolgy-Cell Transport

Question 1

membrane transport

Answer 1

movement of molecules (nutrients and waste) across the cell membrane

Question 2

passive transport

Answer 2

no energy required

Question 3

active transport

Answer 3

energy required, moves substances across concentration gradient

Question 4

simple difusion

Answer 4

molecules move down the concentration gradient through the phospholipid bilayer

Question 5

facilitated difusion

Answer 5

uses transport proteins, allows larger or polar molecules to move across the membrane

Question 6

channel proteins

Answer 6

pores or tunnels open for passage (h20 in and out)

Question 7

carrier proteins

Answer 7

molecules bind to protein, protein changes shape to move molecule across membrane

Question 8

pumps

Answer 8

carrier proteins that require energy

Question 9

vesicles

Answer 9

move large substances in and out of the cell

Question 10

endocyclis

Answer 10

moves in

Question 11

endocytosis

Answer 11

moves out

Question 12

what is osmosis

Answer 12

facilitated diffusion of free water molecules

Question 13

what happens during osmosis

Answer 13

free water molecules move down the concentration gradient to an area with low concentration of water molecules. it binds to ions and polar substances

Question 14

hypotonic

Answer 14

outside of cell has lower solute concentration than inside of it

Question 15

hypertonic

Answer 15

outside of cell has higher solute concentration than insde of it

Question 16

isotonic

Answer 16

equal level of H20 and solute

Question 17

hypertonic plant and animal

Answer 17

plant cell swells and gets full of water, animal cells swell and burst

Question 18

hypotonic animals and plants

Answer 18

animal cell shrinks from loss of water, plant cell vacuole shrinks and plant becomes droopy

Question 19

isotonic plant and animals

Answer 19

animal cell is healthy, plant cell is healthy. water moves in and out at a good cycle.