Archivo del Autor: mravagnan

ENZYMES

Enzymes are proteins that act as biological catalysts. Let´s learn more about enzymes.   Watch the video! Make sure to understand the meaning of the following key words: catalyst substrate product chemical reaction active site denaturation temperature Ph Line-graph – Independent … Sigue leyendo

Publicado en Senior 3 Biology - 2018 | Deja un comentario

Biology virtual period: Reflex arcs

Read page 5 from HERE. Act: Answer the interactive question and post a scrrenshot with the answers. Film 2 examples which show reflex actions. (BE CAREFUL IN USING HOT OBJECTS! MIMICS ARE ACCEPTED!) For each example, name the structures involved: … Sigue leyendo

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

The eye as a sense organ

STRUCTURE OF THE EYE Study the structure and functions of the human eye HERE, and complete pages 9 and 10 from the booklet. HOW WE SEE COLORS Watch the video! Booklet Act: COMPLETE questions 4 c and d on page … Sigue leyendo

Publicado en Senior 4 Biology - 2018 | Deja un comentario

Biology virtual period: Nervous system: neurones and synapse

Let´s start a new topic! All mammals have a CENTRAL NERVOUS SYSTEM and a PERIPHERAL NERVOUS SYSTEM. The CNS is made up of the brain and the spinal cord. The peripheral nervous system is made up of nerves and receptores. … Sigue leyendo

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

Endocrine system: adrenaline and ADH

Let´s continue studying hormones… Study the effects of adrenaline and ADH after reading this link. Act: a- Use bullet points to summarise the effects of adrenaline. b- Describe 3 situations in which adrenaline is secreted. Post a picture to show … Sigue leyendo

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

S4 Biology virtual period: Endocrine system: hormones and their effects

Read page 1 from THIS LINK Act: Define the term hormone   2. Where are the endocrine glands?      Read the descriptions of the glands and the hormones they produced here Act: Build a table to summarise the  hormones  each … Sigue leyendo

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

Excretion and kidneys

Let´s revise the meaning of homeostasis   1- Write down 2 excretory organs and the substances they excrete. 2- Structure of the kidney. Read here! 3- The nephron Watch THIS animation to study the filtration and reabsorption.

Publicado en Senior 4 Biology - 2018 | Deja un comentario

Movement in and out of cells: diffusion, osmosis and active transport

Before we start… explain the meaning of the following terms: – solution – concentrated solution – diluted solution – distilled water Quick introduction: watch the video! Read page 3 from THIS WEBPAGE and play the animations.

Publicado en Senior 3 Biology - 2018, Uncategorized | Deja un comentario

Welcome Senior 4!

Hi everyone! It’s our 2nd year in preparation for the IGCSE exam so one of our challenges will be about recycling what we studied in Senior 3. There are 3 main topics this year: 1- Human body 2- Plants 3- … Sigue leyendo

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

Welcome Senior 3!

1- Characteristics and classification of living organisms. 2-Organisation of the organism 3- Movement in and out of cells 4- Biological molecules 5. Enzymes 6- Human nutrition 7- Transport in humans 8- Gas exchange in humans 9- Excretion and kidneys 10- … Sigue leyendo

Publicado en DHsecundaria, Senior 3 Biology - 2018 | Deja un comentario