Cell Membrane & Transport

Question 1

Which model is used to describe the structure of the cell membrane ?

Answer 1

Fluid Mosaic model

Question 2

The form of endocytosis where smaller substances are brought into the cell by forming vesicles

Answer 2

Pinocytosis

Question 3

Three types of endocytosis :

Answer 3

Pinocytosis
Phagocytosis
Receptor-mediated

Question 4

__________ transport via proteins that require no energy input (atp)

Answer 4

Facilitated transport

Question 5

This gland requires the active transport of iodine out of the blood and into its cells

Answer 5

Thyroid

Question 6

A membrane is said to be _________ permeable if it lets something ma pass through it but not others

Answer 6

Selectively

Question 7

What is exocytosis?

Answer 7

The movement of a vacuole out of the cell . Transport out of cell, excretion/secretion in cells

Question 8

A homogeneous mixture she’d one substance is dissolved into another

Answer 8

Solution

Question 9

Which type of endocytosis has large substances that r being brought into the cell by forming vacuoles at the cell membrane ?

Answer 9

Phagocytosis

Question 10

What is receptor-mediated endocytosis ?

Answer 10

It is when a substance binds to a receptor protein and causes another substance to be taken into the cell via vessicle formation

Question 11

If a plant cell is place in a hypertonic solution, __________ may occur

Answer 11

Plasmolysis

Question 12

What is plasmolysis?

Answer 12

It is when a plant cell contents start to shrink due to osmosis , water being taken out , but not the wall

Question 13

If an animal cell is placed in a hypertonic solution , __________ may occur.

Answer 13

Crenation

Question 14

What is crenation?

Answer 14

Crenation is when water leaves the cell and the cell will shrivel up. Eg: blood cells

Question 15

When an animal cell is placed in a hypotonic solution, _______ may occur

Answer 15

Lysis

Question 17

What is lysis ?

Answer 17

When a cell is in a hopotonic solution in which water will enter the cell. This will cause it to swell and maybe burst (lyse)

Question 18

Sodium & potassium pump is found in large numbers in these kind of cells :

Answer 18

Nerve cells

Question 19

_______ proteins are specific, meaning they only carry one type of particle

Answer 19

Channel

Question 20

Refers to a solution that is less concentrated when compared to another solution

Answer 20

Hypotonic

Question 21

The substance that does the dissolving in a solution

Answer 21

Solvent

Question 22

______ sized molecules tend to produce a higher rate of diffusion

Answer 22

Smaller

Question 23

These types of proteins catalyze chemical reactions on the cell membrane.

Answer 23

Enzymatic

Question 24

These types of protein cause a change to the cell membrane when a specifically shaped molecule binds it’s busing site

Answer 24

Receptor proteins

Question 25

The diffusion rate can be increased by raising the _____ , which in turn increases the speed in which molecules are moving

Answer 25

Temperature

Question 26

Active transport is able to move molecules __________ the concentration gradient

Answer 26

Against

Question 27

When solutions on either side of a membrane are the same concentration, there is ______ net movements or water or solute across a membrane

Answer 27

Zero

Question 28

What is turgor pressure and why is it important to plant cells?

Answer 28

Turgor pressure are caused by hypotonic solutions and occurs when plant cells admit water. It is important because as their cells lose turgor pressure, the plant will start to wilt

Question 29

The substance that is being dissolved in solution

Answer 29

Solute

Question 30

A ______ protein uses ATP to change shape to move molecules across cell membrane

Answer 30

Carrier

Question 31

Special type of diffusion where water is the substance moving.

Answer 31

Osmosis

Question 32

Water fearing molecules

Answer 32

Hydrophobic

Question 33

Solution that is the same concentration when compared to another solution

Answer 33

Isotonic

Question 34

A _____ protein only passes part way through lipid bilayer of cell membrane

Answer 34

Peripheral

Question 35

Type of protein transport that requires atp as an energy source

Answer 35

Active transport

Question 36

Carbohydrate chain attached to a lipid molecule in the cell membrane

Answer 36

Glycolipid

Question 37

Water loving molecules

Answer 37

Hydrophilic

Question 38

Rate of diffusion can be increased by increasing :

Answer 38

Concentration gradient, temperature

Question 39

Occurs when there is a concentration gradient across a membrane and only water is able to pass through

Answer 39

Osmotic pressure

Question 40

A cell ________ protein has glycoproteins attached to it which are unique to every organism and aid in immune system recognition

Answer 40

Recognition

Question 41

Movement of molecules along a concentration gradient

Answer 41

Diffusion

Question 42

Carbohydrate chain attached to a protein in the cell membrane

Answer 42

Glycoprotein

Question 43

Movement of vacuole into the cell

Answer 43

Endocytosis

Question 44

An _______ protein passes all the way through the lipid bilayer of the cell membrane

Answer 44

Integral

Question 45

Refers to solution taht is more concentrated when compared to another solution

Answer 45

Hypertonic

Question 46

When movement of molecules does not require additional energy input , it is called …..

Answer 46

Passive

Question 47

If a plant cell is placed in a hypotonic solution , an increase in _____ pressure will develop

Answer 47

Turgor

Question 48

A _________ protein allows a particular ion or molecule to pass through it when the concentration gradient and without the use of ATP

Answer 48

Channel protein