13.1 Nutrition

• Biologie
• Middelbare school
• havo
• Leerjaar 3

Schedule

- Welcome!

- Quiz

- Learning objectives

- Instructions

- Homework

- End of class

Log in to LessonUp!

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Turn your laptop around!

 (the screen is then facing the board).

 20 sec per question!

15 seconden per vraag!

Which part is in plant cells, but not in animal cells?

1. Cell wall
2. Cel membrane
3. Cytoplasm
4. Cell nucleus

Which one of these animal has carnassial molars?

1. Cow
2. Dog
3. Human

How does air containing oxygen enter the body of an insect?

1. Through the mouth
2. Via filters in the legs
3. Through holes in the abdomen
4. Via tubes in the antennae

Where in a plant are vessels located?

1. Stem
2. Leaves
3. Flower
4. All parts

What does not offer protection against the cold?

1. Water between feathers
2. Go into hibernation
3. Fat layer under the skin
4. Trapped air between the hairs

How long are the intestines of a sperm whale?

1. 6 meter
2. 60 meter
3. 600 meter

Canine teeth

Incisice teeth

Molars

Learning objectives

You will learn about a mammal’s diet by looking at their build.

You will learn how plants get their food.

You will learn how animals and plants prevent themselves from being eaten.

3 types of eaters

langer darmkanaal nodig om planten te verteren

Digestive system of herbivores

Plant foods: cell walls are difficult to digest

Herbivores:
- often multiple stomachs
- rumination = grass returns from the rumen to the mouth
- long intestines with bacteria that help with digestion

Cow digestive system: 20x body length

Digestive system of carnivores

Animal foods: no cell walls

Meat eaters:
- one stomach
- short intestines

Cat's digestive system: 4x body length

How big do you think a human's digestive system is?

1. 4x body length
2. 5x body length
3. 10x body length
4. 20x body length

What?	Make: 13.1 assignments 2, 5, 6, 7, 9, 10, 11
How?	In your (online) book. You may whisper with your neighbour.
Help?	Ask your neighbour. Still need help? Raise your hand.
Time?	15 minutes
Finished?	Check your answers with teams!
Yield	Well done! No homework left. You are now allowed to read or work on another subject.

Schedule

- Welcome!

- Quiz

- Learning objectives

- Instructions

- Homework

- End of class

Log in to LessonUp!

Are you logged in?

Turn your laptop around!

 (the screen is then facing the board).

Cell nucleus

Cell membrane

Mitochondrion

Cytoplasm

Tubular

Ribosome

Consumed during respiration

Created during respiration

Is not consumed nor created during respiration

Glucose (sugar)

Oxygen

Energy

Water

Carbon dioxide

Nitrogen

Enzymes

Energybalance

Energybalance = it shows how much energy an animal takes in (food) and burns up

M = moving

T  = keep its body at the right temperature

P  = producing new cells

W = waste that is excreted by its body (faeces, urine, sweat)

How do plants 'eat'?

Photosynthesis in the chloroplasts!

From glucose they make:

Starch (reserve food)

Fats (reserve food)

Proteins (building compounds)

Vitamins (protective substances)

Minerals are needed to make proteins.

Protection from being eaten

Prey animals = animals that are eaten

- ears and eyes on the side

- camouflage = not standing out in the environment

- mimicry = resembling a dangerous animal

Plants also defend themselves!

How do single-celled organisms feed?

Amoeba

Paramecia

Endocytosis = absorb parts in a cell with the aid of cell membranes

How do single-celled organisms feed?

Amoeba

Paramecia

Exocytosis = release parts of the cell with the aid of a vacuole

release parts from a cell with the aid of a vacuole

What?	Make: 13.1 assignments 13, 14, 15, 18-25
How?	In your book. Try to do the assignments by yourself.
Help?	Ask your neighbour first. Then raise your hand to ask for my help.
Time?	15 minutes
Finished?	Check your answers of 13.1. Then you are allowed to work on another subject.