U2 B3 2HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

B3 The digestive organs

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 104-107

Lessongoals

• You can list the functions and characteristics of the parts of the digestive system
• You can list the digestive juices and their functions

Homework U2 B3

Asgmt 1-8, 4c

OR challenge

Asgmt 1, 5-10

Secret Student

This lesson, I have randomly picked someone to be the secret student.

I pay special attention to:

• Your use of English
• Your participation in the lesson

At the end I will reveal the secret student, If I can give them positive feedback, they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

Rewards

• +1 cm2 cheatsheet = you get to make a cheatsheet for a test. This starts being 1 by 1 cm. Everytime you earn this it gets 1 cm bigger to a max of 4 by 4 cm.
• 1/3 +0.5 = If you earn this 3 times you get to add 0,5 to one of your biology marks.
• Snitch = You can pick a classmate who also is checked for homework, you earn two V's (having 3 earns you a 1/3 +0,5)
• Too bad = You only get one V
  

penalties

• 45 min extra worktime = you need to come after school and do homework, this will last for 45 min or until the task is done
• Coloringpage = You get to pick a coloringpage, You need to color it and perform tasks that might be on it. You need to hand it in during the next lesson, If you don't you get 2 marks.
• 2/1 marks = a mark is an X, if you get 3 of these you will automaticly earn the 45 min extra worktime.
• Snitch = You can pick a classmate who also is checked for homework
• Lucky! = You don't get a penalty

What function can be performed by all nutrients?

1. Building material
2. Fuel
3. Reserve
4. Protective substance

What is the main function of a protein?

1. Building material
2. Fuel
3. Reserve
4. Protective substance

What is the main function of a carbohydrate?

1. Building material
2. Fuel
3. Reserve
4. Protective substance

What organ lets food actually enter your body? (into the bloodstream)?

duodenum

stomach

oral cavity

salivary gland

gall bladder

Liver

tongue

oesophagus

caecum

large intestine

small intestine

rectum

duodenum

Anus

pancreas

Digesting food

• Mouth: chewing and saliva

                        Saliva: digests starch (type of carbohydrate)

• Stomach: kneads and mixes food with digestive juices, gastric juice

                        Gastric juice: Kills bacteria and digests proteins

• Duodenum: bile en pancreatic juice

                        Bile : emulsifies fats

                        Pancreatic juice: digests proteins, carbohydrates and fats

• Small intestine: intestinal juices

                        Intestinal juices: digests proteins and carbohydrates

Emulsifying and digesting

Emulsifying = turning a big group of molecules into smaller groups of molecules.

The molecules stay whole, they are not digested!

Digesting = breaking molecules apart, they are turned into other/smaller molecules

Mouth

Stomach

Duodenum

Small intestines

Carbohydrates

Carbohydrates

Carbohydrates

Proteins

Proteins

Proteins

Fats

Taking in nutrients

Small intestines

• Adds water (and intestinal juices)
• Takes in digested nutrients via intestinal villi

Large intestine

• Takes in water

Intestinal villi

The small intestine's walls are covered in intestinal folds, which in turn are covered in intestinal villi.

These villi absorb nutrients form the food that passes them and add these nutrients to your bloodstream

Digestion doesn't happen in all parts of the intestinal tract. Where does it NOT happen?

1. Stomach
2. Duodenum
3. Small intestine
4. Large intestine

In which of these organs is food taken in?

1. stomach
2. duodenum
3. small intestine
4. large intestine

What you should do: U2 B3

• Pages  103-113
• Asgmt  1-8, 4c

OR challenge

• Asgmt 1, 5-10

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do: U2 B3

• Pages 103-113
• Asgmt 1-8, 4c

OR challenge

• Asgmt 1, 5-10

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Secret Student

The secret student was .......

I paid special attention to:

• Your use of English
• Your participation in the lesson

If I can give them positive feedback, 

they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

Tidy Duty

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish