Let´s play with micrometres

When structures are very very small as mitochondria, ribosomes, we need a very small unit in which to measure them. The most useful one is the micrometre.

 

Let´s look at the exercises on page 23 and solve them!

( Remember as well, you have the answers to these questions at the end of your Biology Coursebook )

Publicado en Senior 1 2018, Senior 2 2018 | Deja un comentario

Cells everywhere!!

And if we try with songs?

But…how do we know so much about cells nowadays?

Publicado en Senior 1 2018, Senior 2 2018 | Deja un comentario

Enzymes

Your task is to watch the following video and make a mind map with the info it contains. With the help of your mind map, you will share the info with the class. 

 
And what about temperature and enzymes?


https://prezi.com/qyikod568emn/cie-igcse-enzymes/#

Now, see how much you have learned.

https://www.bbc.com/education/guides/z88hcj6/revision/3

Publicado en Senior 2 2018 | Deja un comentario

Looking at plant cells under the microscope at school

Last Wednesday in the lab, S1 boys worked with plant cells and the microscope.

They prepared slides using onions, they  coloured the cells and  observed them under the microscope.


Publicado en Senior 1 2018 | Deja un comentario

May Term Test

Here I share with you the contents you need to revise for the coming term test.

Chapter 1    Classification

Characteristics of living things. Classification. The kingdoms of living organisms. Viruses. Classifying animals and plants. Keys. Magnification. Biological drawings.

 

Chapter 2   Cells

Cell structure. Cells and organisms.

 

Chapter 16   Reproduction in plants

Asexual reproduction. Potatoes. Sexual reproduction. Gametes. Sexual reproduction in flowering plants. Flowers. Pollen grains and ovules. Pollination. Self and cross pollination. Wind pollination. Insect and wind pollinated flowers. Fertilisation. Seeds. Seed germination. Act 16.4, to find the conditions necessary for the germination of tomato seeds. Comparing sexual and asexual reproduction.

 

Chapter 17   Reproduction in humans

Human reproductive organs. The female reproductive organs. The male reproductive organs. Egg production. Sperm production.

Fertilisation and development. Implantation. The placenta and amnion. Development of the embryo and foetus. Birth. Ante natal care. Caring for a young baby. Breast and bottle feeding.

Menstrual cycle. Puberty.  Hormonal control of the menstrual cycle.

Birth control. Natural, chemical and mechanical methods of birth control. Surgical methods. Increasing fertility. Sexually transmitted infections. HIV.

 

Chapter 19   Variation and natural selection.

 

Variation. Genetic and environmental variation. Causes of genetic variation.

Adaptive features. Xerophytes. Hydrophytes. Selection. Charles Darwin and the Theory of Evolution. An example of natural selection: the peppered moth, Biston betularia. Antibiotic resistance in bacteria. Stabilising selection. Selective breeding.

 

Remember that the questions you find throughout the chapters are answered at the end of the book. And the end of chapter questions are answered in the CD.

Sources

a)  Biology Book

b)  My blog:

  1. Sizes and units in biology
  2. Viruses
  3. Classification of plants
  4.  Variation and selection
  5. Do you know histograms?
  6. Reproduction in potato plants
  7. Cells
  8. Chapters 1 + 2 ( revision )
  9. Other invertebrates
  10. Let´s draw arthropods!!

And also remember to bring black pencil and eraser for graphs and drawings. Calculator for magnifications as well!

Publicado en Senior 2 2018 | Deja un comentario

May Term Test

Dear Kids, here I share with you the contents you need to revise for the coming term test.

  • Characteristics of living things. Classification. The classification system. The binomial naming system.
  • The kingdoms of living organisms. Animals. Plants. Fungi. Protoctista. Prokaryotes.
  • Viruses.
  • Classifying animals. Phylum vertebrates. Class fish. Class Amphibians. Class reptiles. Class Birds. Class Mammals.
  • Phylum Arthropods. Insects. Crustaceans. Arachnids. Myriapods.
  • Annelids, molluscs and nematodes.
  • Classifying plants. Ferns. Flowering plants. Monocots and dicots.
  • Making biological drawings.
  • Calculating magnification.
  • Keys.

Sources:

  • Biology Book, pages 2 to 17

Remember you have questions to practise  throughout the chapter which are answered at the end of the book.

And the questions at the end of the chapter  (End of chapter questions), are answered in the CD.

Try the multiple choice tests you have in your CD, with the correct answers available.

 

  • On my blog, look at the following entries:      1) Sizes and units in Biology

2) Viruses

3) Classification of plants

4) Characteristics of living organisms

5) Other invertebrates.

6) Let´s draw arthropods!

 

Remember to bring a calculator for magnifications and black pencil and eraser for graphs and biological drawings.

 

Publicado en Senior 1 2018 | Deja un comentario

Sizes and units in biology

Let´s travel watching different structures we can see with our naked eyes to the ones we need electron microscopes…

https://unlockinglifescode.org/connections/newsletter/resource-month-cell-size-and-scale

Publicado en Senior 1 2018, Senior 2 2018 | Deja un comentario

Viruses

Here we have access to some info which is not in your book.

Click on the link below and you´ll be able to look at different pathogens: viruses, bacteria, bacteriophages…

Viruses: A* understanding for iGCSE Biology 1.2 1.3

 

To know a little bit more, just click here.

Publicado en Senior 1 2018, Senior 2 2018 | Deja un comentario

Term 1 Project Biomolecules

Instructions: In this activity, you will work to become an expert on the basics of one type of biomolecule.  Starting in your “home group,’ you will each be assigned an “expert group” to join (counting off to four is fine).  Once assigned an expert group, you will join the others in that group to investigate your assigned category of biomolecules (see below).  For your category, you will be looking to fully understand the follow about your group of molecules:

  1. What is the general formula for the group?
  2. What are the primary roles of these molecules in living organisms?
  3. What are the monomers and polymers of the group?
  4. How are the monomers bonded together?  Be sure to include a diagram.
  5. Give the names of some specific examples of your group of molecules and include where they would be found.

Once you have a good understanding of your group of biomolecules, you will meet back with your home group and teach them about your molecules.

The different groups can choose among:

a) monosaccharides

b) disaccharides

c) polysaccharides

d) aminoacids

e) proteins

f) fats

g) oils

h) nucleic acids

 

As these molecules cannot be seen with our naked eyes, plan a way to show them using models.

All your work must be shown on your blogs and will be shared in class.

Marking will be done by your classmates as well.

You can try this link to obtain more resources ( images, rubrics for assessment, organization of project work, etc )

 

 

DUE   DATE         Tuesday June 19th

 

 Groups

Toto – Bauti G – Marco                            oils

Mora – Lucy H  and  Nina                    nucleic acids

Viole – Luli – Rena                                functional proteins

Achu – Vale – Marina                           structural proteins

Gonza – Lucas – Titín – Bauti B          fats

Juampi – Fermín – Manolo                polysaccharides

Olivia – Sofi – Cata                              mono and disaccharides

 

Rubric

 

Remember we are all going to assess all the work following the rubric.

Your work will be seen and shared at school. And it must also be shared on your blogs.

Remember to state who you work with, and describe all the process:

how you got organized

where you got the info

any drawbacks and how you solved them

any possible improvement for your next project

include sources

Publicado en Senior 2 2018 | Deja un comentario

Classification of plants

//www.slideshare.net/asprella/lesson-5-features-of-the-plant-kingdom-1?next_slideshow=1

 

Publicado en Senior 1 2018, Senior 2 2018 | Deja un comentario