ch 4 part 6 reviews

Question 1

Passive transport of water molecules across a membrane in response to solute concentrations

Answer 1

Osmosis

Question 2

water pores

Answer 2

aquaporins

Question 3

cells can swell or shrink depond on ____________

Answer 3

direction of water movement

Question 4

tonicity

Answer 4

the relationship between the concentration of solutes inside the cell and solutes outside the cell (in solution)

Question 5

types of tonicity ?

Answer 5

hypertonic and hypotonic and isotonic

Question 6

dehydrated celery

Answer 6

contain many of dissolved molecules or solute relative to water molecules

Question 7

distilled water

Answer 7

contain fewer dissolved molecules than celery cells

Question 8

osmosis in distilled water and salt water :

Answer 8

in distilled water ,fewer solute
water will diffuse into the celery equalizing the water concentration inside and outside

in salt water contain more dissolved molecules than celery cells
water move out

Question 9

isotonic solution

i soo ton ic

Answer 9

concentration balanced
water movement balanced

Question 10

hyposolution

Answer 10

solute concentration lower in extracellular
=water in

Question 11

hypersolution

Answer 11

solute concentraion higher in extracellular =
water diffuse out the cell

Question 12

Transport that requires the input of energy to move molecules across a membrane

Answer 12

active transport

Question 13

characteristic of active transport :

Answer 13

-large molecules
-molecules move against concentration gradient
-types primary and socendary

Question 14

primary active transport

Answer 14

uses ATP,

Question 15

secondary active transport

Answer 15

-that uses an electrochemical gradient
-from lower concentraion to hifher concentration

Question 16

basic example of active transport

Answer 16

the uptake of glucose in the intestines in human physiology

Question 17

Endocytosis and Exocytosis __________

Answer 17

move large particles

Question 18

Endocytosis

Answer 18

absorption of large particles INTO a cell

Question 19

Exocytosis

Answer 19

export large particles out of the cell

Question 20

the particles are _________in the plasma membrane and there are three ways or types of endocytosis

Answer 20

engulfed
phagocytosis
pinocytosis
receptor-mediated

Question 21

phagocytosis

Answer 21

is a type og endocytosis by which cells engulf large paticles

Question 22

phagocytosis way :

Answer 22

-plasma membrane form pocket-like enclosure around a large particel
the particle is transported into cell by vesicle

Question 23

receptor- mediated

Answer 23

type of endocytosis by which engulf specific particles

Question 24

__________is protein receptor in plasma membrane of liver cell
and then the plasma membrane form vesicle engulfing LDL
LDL is broken down and used to make useful particles

Answer 24

LDL

Question 25

LDL is broken down into ?

Answer 25

Cholesterol

Question 26

cholesterol can be used in _________hormone like ___________

Answer 26

steroid
estrogen and testosterone

Question 27

shuttles particles out
by enclose the particle and merge with plasma membarne to release their content

Answer 27

exocytosis