Ch5.1 2TTO_deel1

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Welcome!

During this lesson, we will move towards Chapter 4. You will get a short introduction, an overview of the chapter, and we will discuss the first paragraph.

Lesson goals

• You have an overview of Chapter 4
• You can explain what reproduction is and what its function is


• You can explain what the difference is between sexual and asexual reproduction

CHAPTER 4: REPRODUCTION

Paragraphs of chapter 4

1. Reproduction and hormones
2. The male reproductive system
3. The female reproductive system
4. The menstrual cycle
5. Human fertilisation
6. Pregnancy
7. Childbirth
8. Birth control
9. Sexually transmitted infections

Overview of chapter 4

• First, we will go into what reproduction is, and what body parts are involved by reproduction
• Later on, we will discuss how all reproductive processes in our bodies work (menstruation, fertilisation, pregnancy, ...)
• Afterwards, we will discuss how to prevent unwanted pregnancies, and how to keep your reproductive system healthy
• As soon as you have a broad knowledge about the reproductive system, we will go into the more 'cultural' aspects of reproduction

Reproduction = the process by which new individual organisms are produced from their "parents". 

Fertilization = bevruchting

Overview

Please note that we will go into some subjects deeper than the book does, so keep an eye on these lessons so you don't miss a thing!

I will indicate on the slide when there is something that is not in the book.

In between the slides there will be questions that you need to answer, so pay attention to all the slides and videos!

PARAGRAPH 4.1: REPRODUCTION AND HORMONES

Read 4.1

Page 90 tb

In silence!

Reproduction

• Reproduction (or procreation, breeding) = the biological process by which new individual organisms ("offspring") are produced from their "parents''

Reproduction

Why reproduction?

• Every living thing eventually dies. Organisms need to make more of themselves otherwise there would be no life on Earth at all! 

Who reproduce?

• All living organisms

Reproduction

Two types of reproduction:

1. Sexual reproduction (two 'parents' --> one 'child')
2. Asexual reproduction (one 'parent' --> one 'child')

For more info, see the video on the next slide (ignore the part about chromosomes and genetic variety, we will do that next year)

This is not discussed in the book, but still very important to know!

Humans reproduce

1. Aseksual
2. Seksual

Explain what the difference is between sexual and asexual reproduction

Snail sex

- Snail is a hermaphrodite (both male and female)

- It has egg cells and sperm

- Two snail does need a partner to reproduce

Hermaphrodite has visible reproductive organs of both sexes (males and females)

1. Juist
2. Onjuist

Introduction to Dolly

To get a better understanding of the differences between aseksual and seksual reproduction, there will be some questions about the first cloned sheep ever: Dolly. But first watch the video about Dolly!

Is Dolly born after seksual or aseksual reproduction?

1. Seksual
2. Aseksual

As you just saw: Dolly was created by aseksual reproduction as there was not a recombination of genetic information of 2 'parents'. Normally, sheep reproduce seksual. Explain how they do that and what the difference is with Dolly.

What kind of reproduction do plants have?

1. Sexual
2. Asexual
3. Both
4. Other

Asexual

Both: asexual and sexual

Sexual

How many parents are involved in asexual reproduction?

1. 1
2. 2
3. 3
4. 4

Do bacteria reproduce via sexual or asexual reproduction?

1. Sexual reproduction
2. Asexual reproduction

That was it... Now get to work!

• Complete question 1 from your workbook (page 102)
• Read paragraph 5.2