1.2 Practical cellular respiration

• Biology
• Middelbare school
• vwo
• Leerjaar 2

0

Ch. 1 Breath in ... and out

Materials 

- iPad

- Pen, pencil

- note book

For a mark

- No

Lessonup

- Yes

Bags

in bag closet

Phones 

in your bag /

in bag closet 

today''s program 

revision homework 

practical cellular respiration 

homework

Learning objectives: 'what I am going to learn?'

I can .... 

• demonstrate the presence of carbon dioxide in lime water
• demonstrate the presence of carbon dioxide in exhaled air
• explain the differences and similarities between diffusion of gasses and diffusion of water

New key terms:

lime water, clear vs cloudy, osmosis 

what makes gas exchange between alveoli and lung capillaries so effective? and between 'body' capillaries and body cells?

• a large amount of alveoli / body cells 

         --> large surface for diffusion

• a large amount of lung capillaries  / body capillaries

         --> large surface with difference in gas concentration 

• alveoli, capillaries and body cells  have thin 'walls' (=1 layer of cells) 

        --> short distance for diffusion 

homework

finish the practical booklet 'cellular respiration'

lrn par. 1.2

(do exercises 6, 9, 10 and 11)

Ch. 1 Breath in ... and out

Materials 

- iPad

- Pen, pencil

- note book

For a mark

- No

Lessonup

- Yes

Bags

in bag closet

Phones 

in your bag /

in bag closet 

today''s program 

revision homework 

practical cellular respiration 

homework

Learning objectives: 'what I am going to learn?'

I can .... 

• give the definitions of diffusion and osmosis
• explain the differences and similarities between diffusion of gasses and diffusion of water
• can give examples of diffusion and osmosis in biology

New key terms:

osmosis, semi-permeable

0

Asked before the video is started;

What other factor makes gas exchange in the lungs easier? 

--> answer: surfactant (layer of water in which the gas easily dissolves

what other factor makes
gas exchange in the lungs
easier?

what's NOT the name of the membrane that does not permit large molecules but do permit water molecules to move across the membrane?

1. selectively permeable
2. partially permeable
3. semipartially permeable
4. semi-permeable

let the students record the correct names in their notebook

assignment 

watch the two video's and register in your note book similarities and differences between diffusion and osmosis 

similarity

• transport is passive = does not cost energy (ATP) 
• movement from a higher concentration to a  lower concentration 

difference 

• 1

D: the process of spreading particles from a high concentration to an area of lower concentration 

O: the process of distributing free water molecules across semi-permeable membranes to dilute higher concentrations of particles.

• 2

D: is the natural tendency of spreading materials evenly across concentrations

O:  regulates the water supply and hydration of animal and plant cells. Other nutrients can travel in or out of cells by transporting on water molecules as well.

Look for examples of diffusion and osmosis in par. 1.2.

homework

learn par. 1.2

read par. 1.3