homeostasis

Question 1

what is the structure of the cell membrane

Answer 1

semipermeable and primarily phospholipids

Question 2

what is the purpose of the cell membrane

Answer 2

to transport materials into or out of the cell

Question 3

active cell transport

Answer 3

Requires extra energy to bring materials into or to exit the cell
Molecules move from a low concentration to a high concentration
Travel up their concentration gradient

Question 4

example of active cell transport

Answer 4

pumps, endocytosis, and exocytosis

Question 5

passive cell transport

Answer 5

from the cell
Molecules move from a high concentration to a low concentration
Travel down their concentration gradient

Question 6

examples of passive cell transport

Answer 6

osmosis, diffusion, and faciliated diffusion

Question 7

passive transport

Answer 7

movement without the use of energy

Question 8

what are the three types of passive trasnport

Answer 8

diffusion, osmosis, and facilitated diffusion

Question 9

diffusion

Answer 9

Spreading out of molecules across a membrane until there are equal amounts on both sides

Question 10

does diffusion move up or down their concentration gradient

Answer 10

down

Question 11

faciliated diffusion

Answer 11

A Transport Protein helps to bring a molecule through the membrane that could normally not pass through

Question 12

does facilitated diffusion move up or down their concentration gradient

Answer 12

down

Question 13

osmosis

Answer 13

diffusion of water across the cell membrane

Question 14

solute

Answer 14

what gets dissolved

Question 15

solvent

Answer 15

does the dissolving

Question 16

solution

Answer 16

mixture of two or moresubstances

Question 17

concentration

Answer 17

amount of solute dissolved into a solvent

Question 18

three types of solutiosn

Answer 18

hypertonic, hypotonic, isotonic

Question 19

hypertonic solution

Answer 19

Water concentration is below what is found inside the cell

Question 20

hypotonic solution

Answer 20

Water concentration is above what is found inside the cell

Question 21

isotonic solution

Answer 21

Identical water concentration inside & outside of the cell

Question 22

active transport

Answer 22

Movement with the use of energy

Question 23

what are the three types of active transport?

Answer 23

Molecular pumps, endocytosis & exocytosis

Question 24

molecular pumps

Answer 24

Cell uses energy to pump molecules through a channel across the membrane

Question 25

example of molecular pumps

Answer 25

sodium/potassium pump

Question 26

endocytosis

Answer 26

Cell uses energy to bring in large materials using a vesicle

Question 27

example of endocytosis

Answer 27

White blood cells engulf bacteria to fight infections/bacteria

Question 28

exocytosis

Answer 28

Cell uses energy to export large amounts of materials using vesicles

Question 29

example of exocytosis

Answer 29

Nerve cells release neurotransmitters to pass signals along the nervous system