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Biology 12 > Cell Membrane & Transport > Flashcards

Cell Membrane & Transport Flashcards

1
Q

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

A

Fluid Mosaic model

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2
Q

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

A

Pinocytosis

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3
Q

Three types of endocytosis :

A

Pinocytosis
Phagocytosis
Receptor-mediated

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4
Q

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

A

Facilitated transport

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5
Q

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

A

Thyroid

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6
Q

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

A

Selectively

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7
Q

What is exocytosis?

A

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

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8
Q

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

A

Solution

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9
Q

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

A

Phagocytosis

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10
Q

What is receptor-mediated endocytosis ?

A

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

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11
Q

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

A

Plasmolysis

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12
Q

What is plasmolysis?

A

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

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13
Q

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

A

Crenation

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14
Q

What is crenation?

A

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

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15
Q

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

A

Lysis

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16
Q
A
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17
Q

What is lysis ?

A

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)

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18
Q

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

A

Nerve cells

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19
Q

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

A

Channel

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20
Q

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

A

Hypotonic

21
Q

The substance that does the dissolving in a solution

A

Solvent

22
Q

______ sized molecules tend to produce a higher rate of diffusion

A

Smaller

23
Q

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

A

Enzymatic

24
Q

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

A

Receptor proteins

25
Q

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

A

Temperature

26
Q

Active transport is able to move molecules __________ the concentration gradient

A

Against

27
Q

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

A

Zero

28
Q

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

A

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

29
Q

The substance that is being dissolved in solution

A

Solute

30
Q

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

A

Carrier

31
Q

Special type of diffusion where water is the substance moving.

A

Osmosis

32
Q

Water fearing molecules

A

Hydrophobic

33
Q

Solution that is the same concentration when compared to another solution

A

Isotonic

34
Q

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

A

Peripheral

35
Q

Type of protein transport that requires atp as an energy source

A

Active transport

36
Q

Carbohydrate chain attached to a lipid molecule in the cell membrane

A

Glycolipid

37
Q

Water loving molecules

A

Hydrophilic

38
Q

Rate of diffusion can be increased by increasing :

A

Concentration gradient, temperature

39
Q

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

A

Osmotic pressure

40
Q

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

A

Recognition

41
Q

Movement of molecules along a concentration gradient

A

Diffusion

42
Q

Carbohydrate chain attached to a protein in the cell membrane

A

Glycoprotein

43
Q

Movement of vacuole into the cell

A

Endocytosis

44
Q

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

A

Integral

45
Q

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

A

Hypertonic

46
Q

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

A

Passive

47
Q

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

A

Turgor

48
Q

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

A

Channel protein

Biology 12 (8 decks)

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