Cells And Transport Analyisis

Question 0

Explain molecules diffusing down a concentration gradient

Answer 0

The molecules move from more concentrated areas to areas with less concentration, no energy

Question 1

Concentration gradient

Answer 1

Difference in the concentration of a substance across a membrane

Question 2

Facilitated diffusion vs simple diffusion

Answer 2

Facilitated - has molecules that cannot readily diffuse so they need to be assisted by carrier proteins. Simple diffusion - just diffusion across a membrane

Question 3

Why does a house plant die if you water it with salt water?

Answer 3

Plant gets it’s water diluted from the salt concentration so it dies

Question 4

Why is active transport different?

Answer 4

uses energy (ATP)

Question 5

Endocytosis

Answer 5

taking molecules into the cell, active transport, vesicles are applied

Question 6

exocytosis

Answer 6

pushes molecules out of the cell, active transport, vesicles

Question 7

Can endo and exocytosis occur within the same cell?

Answer 7

yes because it needs to get rid of waste but still bring important materials into the cell

Question 8

If transport proteins that carry amino acids into a cell stopped working, how might the process affect the cell?

Answer 8

uses exo and endocytosis to get the proteins but uses more energy

Question 9

final vesicle formed during exocytosis and the cell membrane where does it go?

Answer 9

vesicle fusses with the membrane.

made of the same material, gets larger

Question 10

osmosis

Answer 10

water molecules diffuse across a cell membrane from high to low concentration of water. (low to high is solute)

Question 11

in which direction does water move across membranes ? up or down the concentration gradient

Answer 11

DOWN high to low

Question 12

isotonic

Answer 12

concentrations of solutes outside and inside the cell are equal

Question 13

hypertonic

Answer 13

concentration of solute outside= higher than inside the cell

Question 14

hypotonic

Answer 14

concentration of solute molecules outside is lower than concentration in the cell

Question 15

solution with a lower solute concentration

Answer 15

hypotonic

Question 16

solution in which solute is the same

Answer 16

isotonic

Question 17

condition plant cells require

Answer 17

isotonic

Question 18

condition that animal cells require

Answer 18

isotonic

Question 19

solution with higher solute concentration

Answer 19

hypertonic

Question 20

solution with a high water concentration

Answer 20

hypotonic

Question 21

good turgor pressure

Answer 21

amount of pressure on cell wall in a plant cell

Question 22

in active transport, in which direction (concentration gradient) is the movement occuring ?

Answer 22

against/up (using energy)

Question 23

3 types of active transport

Answer 23

endocytosis 
exocytosis 
proteins pumps (sodium potassium pump)

Question 24

in active transport, what does the protein do?

Answer 24

used to pump the ions called integral protein, changes its shape to move ions across the cell membrane

Question 25

receptors, what are they ?

Answer 25

detect a signal molecule and perform an action response
intracellular - binds molecules that can cross
membrane- binds to molecules that cannot cross membrane

Question 26

cellular transport

Answer 26

movement of molecules across a membrane

Question 27

all components of the cell membrane vibrate randomly. allows _____ molecules like water to pass through, but _____ molecules like sugar can pass through less easily

Answer 27

small, larger

Question 28

diffusion has how much energy?

Answer 28

NONE its passive transport