2.3 Cells

• Biologie
• Middelbare school
• mavo
• Leerjaar 1

2.4. cells

Start task 'Cells'

1.  Copy the following learning objectives into your notebook:

• I know that an organism is made up of cells.
• I can describe the parts of animal cells and plant cells along with their functions.

2. On your Chromebook: join this LessonUp!

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agenda

1. Reflection: organs of plants and animals
2. Theory: cells (video, explanation, and notes)
3. Complete assignments (this is homework)
4. Closure

Lots of quiz questions!

reflection

organs of animals

organs of plants

Hierboven zie je een torso zoals in het biologielokaal. Een aantal organen is ernaast neergelegd. Sleep de namen van de organen naar het juiste orgaan.

kidney

lungs

Liver

windpipe

small intestine

Drag the organs to the correct place in the torso.

Humans and plants have organs; what do you call a group of organs that work together?

1. Organs
2. Tissue
3. Cells
4. Organ system

Organs of a
plant are...

1. The leaf and the veins
2. Stem and an embryo
3. Root, stem and leaves
4. Tap root, lateral root, root hairs

With which organ does the plant make its own nutrients (food)?

1. root
2. leaf
3. stem
4. flower

What is NOT a function
of roots?

1. store food reserves
2. take up water and minerals
3. anchor the plant in the ground
4. making glucose

organism

tissue

cell

organ

organ system

Theory

cells

Cells

• Cells are the building blocks of organisms.

• There are different types of cells, but their structure is mostly the same.

• The human body has about 30 trillion cells.

Different types

• Cells can have all sorts of shapes, 

such as a sphere or a cube.

Animal cells

• All animals have the same type of cells — animal cells.

• The shape can vary, but the parts are the same.
• cel organelles: the parts of a cell that have their own functions

Animal cells

• Cytoplasm: fluid consisting of water with dissolved substances

• Cell membrane: thin skin around the cytoplasm (which regulates the intake and release of substances)

Animal cells

• Nucleus (kern): the control center of the cell.

• Nuclear membrane: a membrane surrounding the nuclear plasma

Plantaardige cellen

Alle organismen bestaan uit cellen. Cellen zijn de bouwstenen van een organisme. Cellen zijn erg klein. Je kunt ze alleen zien onder een microscoop. 

Cellen zijn doorzichtig. Om ze goed te kunnen zien onder een microscoop, kunnen ze worden gekleurd.

Plant cells

• Plant cells have all the parts that animal cells have.

• Plus, they have a few parts that animal cells never have:
  

Plant cells

• The plant cell also has a cell membrane and a nucleus with a nuclear membrane.

• Cell wall: a rigid layer outside the cell membrane.
  

• 
  

Plant cells

• 
  
• vacuole: a vesicle that is filled with fluid

photosynthesis

water + carbon dioxide + light

glucose + oxygen

Plant cells

• chloroplasts: plastids (korrels) where photosynthesis takes place

• They also give the plant its green color!

Plastids

= "korrels" in the cytoplasm

• chloroplasts = bladgroenkorrels => photosynthesis
• chromoplasts = kleurstofkorrels => yellow, orange /red color
• amyloplasts = zetmeelkorrels => starch storage

Verschillen planten en dierlijke cel

Is this an animal cell or a plant cell?

1. animal
2. plant

Both animal cells and plant cells have cytopplasm.

1. true
2. not true

An animal cell has a cell wall

1. yes, always
2. yes, sometimes
3. no, never

Drag the parts of the animal cell to the correct location.

cell membrane

nucleus

cytoplasm

nucleus

vacuole

chloroplast

cytoplasm

cell membrane

cell wall

What is the function of each part of a plant cell?

Controls everything that happens in the cell.

Makes a plant cell sturdy.

Can allow substances to enter and leave the cell.

Provides a strong layer around the cell.

Viscous fluid; the nucleus and chloroplasts are located within it.

Gives the plant its green color and produces nutrients

cell membrane

cytoplasm

vacuole

cell wall

chloroplasts

nucleus

animal cell

Plant cell

Elk onderdeel is dubbel.

Sommige onderdelen moeten 2 keer in dezelfde geplaatst worden.

plant cell

animal cell

cell wall

cell membrane

cell membrane

cell wall

chloroplasts

chloroplasts

nucleus

nucleus

vacuole

vacuole

https:

assignments

homework

Theme 2: Organs & Cells

basics 4: Cells

• Asg. 1, 3, 4, 6, 7 

(pgs. 112-114)

Er zijn hiernaast drie verschillen zichtbaar tussen een plantaardige en een dierlijke cel.

Door welk verschil is plantaardig voedsel moeilijker te verteren dan dierlijk voedsel?

1. Kenmerk A
2. Kenmerk B
3. Kenmerk C
4. Alledrie de kenmerken

Celkern

Cytoplasma

Bladgroenkorrel

Celwand

Celmembraan

Cel van een plant

Cel van een dier