CELL DIVISION: Comparing mitosis and meiosis

Last virtual period before the winter holidays!!

Watch the video “Comparing mitosis and meiosis”

a- What is the purpose of meiosis?

b- Where does it take place?

c- Make a drawing showing the parent and daughter cells in mitosis and meiosis.

d- Build a table to show the differences between mitosis and meiosis.

e- Do red blood cells divide by mitosis? Explain your answer.

Enjoy! 🙂

 

Publicado en S4 Biology virtual period- 2018 | Deja un comentario

Reproduction in humans: female reproductive system

Structures and functions

Take a look at THESE slides.

MENSTRUAL CYCLE

Watch the animation: all about menstruation

FERTILISATION

What´s fertlisation?

Where does it take place?

Fertilisation, zygote,identical and non-identical twins

IMPLANTATION AND PREGNANCY

What is implantation?

What is the placenta?

How long does gestation take place in humans?

Publicado en Senior 4 Biology - 2018 | Deja un comentario

Reproduction in humans: male reproductive system

Structures and functions

Take a look at THESE slides.

 

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Transport in humans

A multicellular organisms , such as a person,  needs a transport system to move substances around the cells. In the human body, a transport system consists of:

  • The heart
  • Blood vessels: arteries, veins and capillaries
  • Blood: components and functions

 

The heart and circulation

  • Read pages 4 and 5 from THIS LINK and play the animations.
  • How does the heart work? Watch the video!

  • INVESTIGATING HEART DISEASE: click on THIS LINK to learn about the angiogram and the ECG.

Blood vessels

  • Let´s learn more about arteries, veins and capillaries.

The structure of each of them is related to the function.

READ HERE!

Blood

  • Take a look at the worksheet we did in class and click on THIS link!

Enjoy! 🙂

 

Publicado en Senior 3 Biology - 2018 | Deja un comentario

Biology Virtual Period: chromosomes and mitosis

CHROMOSOMES

In this period we are going to learn about the continuity of life. You may have heard words like DNA, genes, inheritance, chromosomes, cell division…. let´s investigate what all these is about!

Watch the video !

Activities:

1- a- Make a drawing of a body cell which contains one chromosome.

b- Make a drawing of a body cell which contains one chromosome before cell division.

Explain the difference between them.

2- Explain the difference in the number of chromosomes between a body cell and a gamete.

CELL DIVISION: MITOSIS

Watch THIS video about mitosis.

1- Make a drawing of a cell with 2 chromosomes.

2- Make a drawing of the same cell before cell division.

3. Make a drawing of the daughter cells.

4- Name examples in which mitosis takes place in the human body.

 

 

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June 5th: Environment Day

We are celebrating the Environment Day!

 LAB WORK: POLLUTION

THE UN SUSTAINABLE DEVELOPMENT GOALS

Click on THIS LINK!

TEAM WORK:

  • What is the UN?
  • What is the link between the UN and the Environment?
  • What are the Sustainable Development Goals?
  • Goals 6,7, 11, 12, 13, 14 and 15.
Publicado en S4 Biology lab work 2018, Senior 4 Biology - 2018 | Deja un comentario

Enzymes and digestion

Enzymes and digestion

DIGESTION

Publicado en Senior 3 Biology - 2018 | Deja un comentario

S4 Virtual period: Male reproductive system

Let´s start to study reproduction.

Living organisms reproduce sexualy or asexualy. Therefore, we say that there are two types of reproduction.

  1. Act: Use information from the text book to build a comparison table between sexual and asexual reproduction.

Humans reproduce sexualy.

2.  Watch this video to learn about the MALE REPRODUCTIVE SYSTEM.

3. Act: Summarize the functions of each of the organs which are part of the male reproductive system. Take a look at THESE SLIDES !

4. State the components and the function of semen.

5. Make a large labelled drawing of a sperm cell and state how the structure is adapted to its function. (Do not add a picture).

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Control of body temperature: Heat loss and size

Read the article and explain the relationship between heat loss and animal size.

http://c21.phas.ubc.ca/article/metabolism-heat-loss-and-size

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Drugs: effects of “paco” in the brain.

April 26th, 2018

Dr. Marcelo Cetkovich from INECO Foundation explains the effect of Paco in young children.

https://www.lanacion.com.ar/2129141-un-especialista-explica-como-impacta-el-paco-en-el-cerebro

Publicado en News!, Senior 4 Biology - 2018 | Deja un comentario