Osmosis & Diffusion Flashcards

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1
Q

What is Diffusion?

A

This is the movement of particles or molecules from a region of high concentration to a region of low concentration until they are evenly distributed.

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2
Q

Process of Diffusion

A

These molecules are particles of gas or liquid can move around at random.

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3
Q

Examples of Diffusion

A

Smells can spread in water,eg sharks can smell blood from distance away, smell of food being cooked in the kitchen,spraying perfume in a room.

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4
Q

Process of Osmosis

A

The cell membrane is semi-permeable or partially permeable,this means that some substances can pass through it,but others cant.

The membrane has small pores(opening) that allows for the movement of substances.

Water moves from a diluted to a more concentrated solution along a concentration.

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5
Q

What is Osmosis?

A

This is the movement of water molecules from a region of high concentration to a region of low concentration through a semi-permeable membrane.

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6
Q

Examples of Osmosis

A

plant roots absorbing,raisin in water,feeling thirsty after consuming salty foods.

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7
Q

What is Turgid?

A

-water enters and leave the cell for a firm shame.
It is considered as being Isotonic.

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8
Q

What is Plasmolysed?

A

-water leaves the cell so it collapses.
It is considered as being Hypertonic.

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9
Q

What is Haemolysis?

A

-much water enters the cell,which blows up and burst.
This is considered as being Hypotonic.

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10
Q

What is considered as;
sugar solution
water
concentrated
diluted

A

Sugar Solution- solute
Water- solvent
Concentrated- more solute than solvent
Diluted- more solvent than solute.

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11
Q

What is Isotonic?

A

-any external solution that has the same solute concentration compared to body fluids.

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12
Q

What is Hypertonic?

A

-any external solution that has a high solute concentration and low water concentration compared to any body fluids.

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13
Q

What is Hypotonic?

A

-has a lower solute concentration compared to the intracellular solute concentration.

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14
Q

What are the functions of vitamin E?

A

healthy skin and eyes,strong immune system.

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15
Q

What is Vitamin K ?

A

A fat soluble nutrient

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16
Q

Food sources of vitamin K

A

(green leafy vegetables,broccoli,cabbage), vegetable oils.

17
Q

Function of Vitamin K

A

Blood Clotting & wound healing