More intro

Question 1

What is Extracellular Fluid?

Answer 1

The fluid that surrounds your living cells. Because this allows transport of good stuff to the cell and back out.

Question 2

What is the Solute?

Answer 2

The thing that gets dissolved.

ex. salt

Question 3

What is the Solvent?

Answer 3

The thing that does the dissolving

ex. H2O

Question 4

What is the Solution?

Answer 4

The mix of solute into solvent

ex. saltwater (brine)

Question 5

Is the Solvent and Solute physical changes?

Answer 5

Yes (ask to explain why)

Depending on what solution you are talking about the [solvent] and [solute] can cause it’s cell to expand or shrink.

Question 6

What is Homeostasis

Answer 6

Homeo meaning same and stasis meaning not moving.

It is the body’s efforts to maintain a steady internal condition – we don’t like fluctuation

Question 7

What are examples of things that are homeostasis:

Answer 7

Temperature: (the human body stays at a consistent temperature of 37 degrees Celcius)

Water Content: (too much water causes you to urinate more frequently; too little causes you to be thirsty)

Glucose Concentration: (too high causes you to be hyper; too low means you need to eat)

Question 8

What is Diffusion?

Answer 8

The movement of particles from areas of high concentration to areas of low concentration.

Question 9

Examples of Diffusion:

Answer 9

Farts (ask to explain why)

Question 10

What is Osmosis?

Answer 10

The diffusion of water across a semi-permeable – major transportation process membrane

Question 11

What are the 3 types of membranes?

Answer 11

1. Permeable
2. Impermeable
3. Semi-permeable

Question 12

Define a Permeable membrane:

Answer 12

All things can pass through this membrane

(ask if its smart and explain why it is or is not)
It isn’t smart because there are certain things we do not want passing through us into our bodies.

Question 13

Define an Impermeable membrane:

Answer 13

Nothing can pass through this membrane

(ask if its smart and explain why it is or is not)
It isn’t smart because there are certain things we want passing through us into our bodies.

Question 14

Define a Semi-permeable membrane:

Answer 14

Lets somethings in – lets bad things out.

(ask if its smart and explain why it is or is not)
This is smart because we keep all the things we need but leave what we don’t out.

Question 15

Types of Solutions: (3 types)

Answer 15

Isotonic solution
Hypotonic solution
Hypertonic solution

Question 16

What is an Isotonic solution?

Answer 16

An Isotonic solution is a solution where the [solute] and [solvent] is equal inside and outside of the cell.

Question 17

What happens in an Isotonic solution?

Answer 17

• Flow occurs, but no net change

- Cell stays same size

Question 18

What is a Hypertonic Solution?

Answer 18

The [solute] outside the cell is above the [solute] inside the cell.

The [solvent] is higher in the cell

Question 19

What happens in a Hypertonic Solution?

Answer 19

• By osmosis, solvent will exit the cell making the cell shrink, shrivel, or become “flaccid”
• net loss of fluid

Question 20

What is a Hypotonic Solution?

Answer 20

The [solute] outside the cell is under the [solute] inside the cell.

The [solvent] higher outside the cell.

Question 21

What happens in a Hypotonic Solution?

Answer 21

• By osmosis, the solvent will enter the cell making it increase in size.
• Plant cells stay stiff (turgid)
• Animal cells expand and can burst