The Plasma Mebrane

Question 1

How does the plasma membrane maintain homeostasis in a cell?

Answer 1

It regulates what enters and exits the cell, helping it have its own environment to survive.

Question 1

How does the plasma membrane maintain homeostasis in a cell?

Answer 1

It regulates what enters and exits the cell, helping it have its own environment to survive.

Question 2

How is the inside of a cell separate from it’s environment?

Answer 2

IT is separate because the the barrier that the plasma membrane creates?

Question 3

Which component provide basic membrane structure?

Answer 3

The phospholipid bilayer

Question 4

Which phospholipid end is polar?

Answer 4

the Head

Question 5

Which phospholipid head in non-polar?

Answer 5

the Tail

Question 6

Which phosopholipid end in hydrophobic?

Answer 6

the Tail

Question 7

Which phospholipid head is hydrophilic?

Answer 7

the Head

Question 8

Why are there two layers of phospholipids?

Answer 8

The tail must be kept away from water and the head face the edges since it is surrounded by a layer water/fluid

Question 9

Which membrane component controls the cell identity?

Answer 9

Carbohydrates

Question 10

Where are carbohydrates found in the plasma membrane?

Answer 10

On the outer layer/surface facing the edges

Question 11

Which mebrane component controls the fluidity?

Answer 11

Cholesterol

Question 12

Which membrane component controls the cells transports?

Answer 12

Protiens

Question 13

What are the two main types of transport proteins?

Answer 13

Channel and carrier protiens

Question 14

Why is selective permeability nessacary for a cell?

Answer 14

It allows the cell to maintain a certain environment that is different from the outside.

Question 15

Why is homeo stasis inportant?

Answer 15

To have conditions sutible for a cell to survive in

Question 16

Which structure is responsible for maintaining homeostasis?

Answer 16

The Plasma Membrane

Question 17

What is a mosaic?

Answer 17

A structure made up of smaller peices

Question 18

Why is the fluid mosaic model used to describe the plasma membrane?

Answer 18

It is made up of many small pieces and moves in a fluid way

Question 19

Why is the organization of the phospholipids important to its surrounding environment?

Answer 19

The inside environment and the outside environ meant has water. Since the tails repel water, the bilayer can react to both

Question 20

What would happen if a cell could no longer be selectively permeable

Answer 20

it will die since it cannot maintain hemostasis

Question 21

What would happen if a cell can not produce cholesterol?

Answer 21

The plasma mebrane wil not be fluid and the cell will not maintain homeostasis and die

Question 22

What are the two main types of cellular transport?

Answer 22

Active and passive transeport

Question 23

What does passive transport mean

Answer 23

Transport with little to no energy

Question 24

What does active transport mean?

Answer 24

Transport that uses energy

Question 25

What is concentration gradient?

Answer 25

The area between high concentration and low concentration

Question 26

What molecuels are able to defuse in and out the cell?

Answer 26

O2 and CO2

Question 27

How do CO2 and O2 travel from in and out the cell?

Answer 27

Throught the pances between the phospholipids and the membrane

Question 28

What happens during equalibrium?

Answer 28

There is no more diffusion as the concentration is the same everywhere

Question 29

When equalibrium is reached, do the molecules stop moving?

Answer 29

No, melecules are always moving

Question 30

What would happen to a cell placed in a high salt solution?

Answer 30

The cell would shrivle and lose water to the environment

Question 31

What would we call a strong salt solution?

Answer 31

HYPERTONIC

Question 32

What would happen to a cel placed in pure water?

Answer 32

It would gain water from the environment and increase in size

Question 33

What would we call a pure water solution?

Answer 33

HYPOTONIC

Question 34

What is a solution called when it has the same concentration of water and solutes as the inside of the cell?

Answer 34

ISOTONIC

Question 35

How does water get inside of a cell?

Answer 35

Through channel proteins

Question 36

How are cells able to get dissolved materials inside?

Answer 36

Through any proteins

Question 37

Movement of molecules through a channel protein from high to low concentration is called?

Answer 37

FACILITATED DIFFUSION

Question 38

Why is facilitated diffusion passive?

Answer 38

Because molecuels are still moving from High concentration to low concentration

Question 39

What are three examples off passive transport?

Answer 39

facilitated diffusion, osmosis, and diffusion

Question 40

What type of protein moves molecules from low to high concentration across a membrane?

Answer 40

Carrier proteins

Question 41

Why are carrier proteins active transport?

Answer 41

It moves from low back to high concentration against the current. Needing energy to make this happen

Question 42

Where does energy come from for active transport?

Answer 42

ATP

Question 43

What types of molecules would be brought into or out of a cell using endocytosis or exocytosis?

Answer 43

Molecules, proteins, and cells too large for carrier proteins

Question 44

Are osmosis and diffusion passive or active?

Answer 44

Passive

Question 45

What are three examples active transport?

Answer 45

Endocytosis, exocytosis, and carrier proteins

Question 46

How is facilitated diffusion different from active transport using carrier proteins?

Answer 46

FD: high to low concentration CP: Low to high concentration

Question 47

Why is active transport and energy usinng process?

Answer 47

Because it goes against the constant gradient, and in exocytosis and endocytosis the cell had to change shape

Question 48

What adaptations might protist living in the hypertonic Great Salt Lake have?

Answer 48

They will have the adaptation to the salty water

Question 49

How does the plasma membrane maintain homestasis in a cell?

Answer 49

It regulates what goes in and out and helps separate the conditions from inside the cell and outside the cell