Recap unit 2 (B1s)

• Biologie
• Middelbare school
• havo
• Leerjaar 1

Recap unit 2

Preparing for the big test!

Objectives

After today's lesson you :

1. Can identify the organs in a torso and in a   cross-section of a body.
2. Can identify the organs in the organ systems of humans and animals.
3. Can describe the structure and function of roots, stems and leaves.
4. Can name organ systems in plants and their functions.
5. Know that an organism consists of cells
6. Can name tissues in humans and plants with their function.
7. Can name parts of animal cells with their features and functions.
8. Can name parts of plant cells with their features and functions.
9. Can name the parts of a microscope with their functions.
10. Can work with a microscope.
11. Can make a specimen.
    

What will we do today?

Working with a new layout! -> https://lessonup.app/code

• Join class on your laptop trough the link above and fill in the class code.
• First the information per paragraph, then (often) a question.
  

What dit you do in your winter break?

Objective 1

Organ: a part of an organism that preforms a specific function

Overview of the organs

Small intestine

Lungs

Stomach

Liver

Heart

Objective 2

Organ system: A group of organd that work together the preform a certain task

1. Respiratory system
2. Skeletal system
3. Circulatory system
4. Muscular system
5. Digestive system
6. Nervous system
   

Which organ system includes the brain, spinal cord an nerves?

1. Circulatory system
2. Nervous system
3. Respiratory system
4. Skeletal system

Objective 3

Roots

Tap roots, lateral roots and root hairs

• Taking up water and nutrients from the soil

• To keep the plant anchored in the ground
• Storing food reserves
  

Stems

Woody and herbacious plants

• To transport substances
• To make the plant more rigid
  

Leaves

Leaf stalk, blade, main vain, lateral vain, lamina

Photosynthesis

What is one of the functions of the stem?

1. Taking up water and nutrients from the soil
2. To keep the plant anchored in the ground
3. Transporting substances
4. To make food for the plant by photosynthesis

Objective 4

Organ system in plants:

• Root system
• Vascular system

Functions of the vascular system:

• Transporting water and minerals from the roots to other parts of the plant
• Transporting glucose from the leaves to other parts of the plant
  

True or false:
The vascular system transports glucose from the roots to other parts of the plant

True

False

Objective 5

All organisms consist of one or more cells

• Cells are building blocks of organisms
• Cells are not flat but three-dimensional
  

Objective 6

A tissue is a group of cells with the same shape and function

Epidermis: this tissue protects a plant from outside influences

The stomata are small openings in the epidermis

Cambium: A layer of cells just underneath the bark of a tree that forms new wood every year (annual rings)

True or false:
The oldest wood in a tree is found in the middle of the trunk

True

False

Objective 7

A human cell has different parts

• Cytoplasm: A thick fluid inside the cell
• Cel membrane: A thin skin around the cytoplasm
• Nucleus: The controll center of the cell and is surrounded by the nuclear membrane
  

Which part does not belong to a human cell?

1. Epidermis
2. Nucleus
3. Cell membrane
4. Cytoplasm

Objective 8

Plant cells are similar to animal cells, with some extra's

• Cell wall: A thick layer around the cell membrane
• Vacuole: A large pocket filled with water and dissolved substances
• Plastids: Chloroplasts (photosynthesys), Amyloplasts (storing starch) and Chromoplasts (give flowers and fruits their colour)
  

Chloroplast

Nucleus

Vacuole

Cell wall

Objective 9

Naming all the parts of the microscope

Objective 10

How do you use a microscope?

Some important tips!

• Hold it by the arm
• Use the smallest magnification first
• Only use the large knob on the smallest magnification
• Make sure the light is on and the diaphram is not closed

True or false
When you put your microscope back into the locker, you put the largest magnification lense in front

True

False

Objective 11

How to make a specimen?

• be careful with the thin slide and coverslip
• slide your coverslip over the drop of dye, keeping it tilted at an angle
• Use the needle to guide the coverslip
  

How do you use the preparation needle?

1. By moving the specimen on the stage
2. By holding the specimen
3. By guiding the coverslip on the slide
4. By stabbing someone

Did you like to work with this tool during class?

😒🙁😐🙂😃

Start learning for the test!

• Use your books (summary on pages 159-162)    
• Finish the test yourself
• Study with flashcards
• Make the practise test
  

How much time left?

You can study with your neighbour by quizzing them

If you need any help you can come to me

Do not close LessonUp yet!

Would you like some more information about a paragraph/section tomorrow?