ciencias de la naturaleza 1º de e.s.o

CIENCIAS DE LA NATURALEZA1º DE E.S.O.

PRIMER TRIMESTRE FIRST TERM

Chapter 3:

Life on Earth

http://www.ancientlifepublishing.com/

WHAT IS A LIVING THING?1) All the organisms in the biosphere are able to perform three vital functions:- Nutrition, - Interaction, and- Reproduction

3.1.LIVING ORGANISMS

http://www.schoolsnet.com/pls/hot_school/sn_lessons.page_pls_lesson_detail?x=16180339&p_lesson_id=88&p_res_type_id=15

Here in you can find more characteristics of the living organisms. Make a list and resume all of them in a

few words in your notebook

WHAT IS A LIVING THING?1) The three vital functions:There are two kinds of nutrition:-AUTOTROPHIC AND HETEROTROPHIC

Autotrophs produce their own food by taking water, CO2 and mineral substances from the

environment

Heterotrophs obtain their food by eating other

organisms or their remains

3.1.LIVING ORGANISMS

AUTOTROPHIC NUTRITION

Autotrophs produce their own food by taking water, CO2 and mineral substances from the

environment Photosynthesis

3.1.LIVING ORGANISMS

HETEROTROPHIC NUTRITION

Heterotrophs obtain their food by eating other

organisms or their remainsCellular respiration

3.1.LIVING ORGANISMS

“The Lion King” and its associated characters are the property of Walt Disney Pictures, Incorporated.

In the film “The Lion King” Mufasa explains to his son Simba how all living things are

connected:

“Antelopes eat the grass, lions eat antelopes, but when the lions die, their

bodies become food for the grass, and so the ‘circle of life’ goes on….”

3.1.LIVING ORGANISMSAutotrophs and

heterotrophs are closely related each others

WHAT IS A LIVING THING?1) All the organisms in the biosphere are able to perform three vital functions:-Interaction: Living organisms are able to sense changes in their environment and react in order to survive

http://www.clam-arte.com.ar/pintor.gif

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?1) All the organisms in the biosphere are able to perform three vital functions:-Interaction: Living organisms are able to sense changes in their environment and react in order to survive

http://www.youtube.com/watch?v=Ze8NV7cvW8k

Plants grow towards the light

http://www.youtube.com/watch?v=yps7pgq1TAk&feature=fvsr

Animals detect food and move towards it

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?1) All the organisms in the biosphere are able to perform three vital functions:- Reproduction: Organisms produce descendants that maintain their characteristics

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?1) Reproduction can be …

Asexual Sexual

http://www.youtube.com/watch?v=gEwzDydciWc&feature=related

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?2) All the living beings in the biosphere are made up of similar substances

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?2) All the living beings in the biosphere are made up of similar substances Water (65-90 %)

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?2) All the living beings in the biosphere are made up of similar substances Water (65-90 %)

Substances rich in carbon (10-30 %)

3.1.LIVING ORGANISMS

CARBOHIDRATES NUCLEIC ACIDS

LIPIDS PROTEINS

WHAT IS A LIVING THING?2) All the living beings in the biosphere are made up of similar substances Water (65-90 %)

Substances rich in carbon (10-30 %)

Mineral substances (1-5 %)

3.1.LIVING ORGANISMS

WHAT IS A LIVING THING?3) All the living beings in the biosphere are formed by cells

A cell is the smallest unit of a living thing capable of performing the three vital functions: nutrition, relation, and reproduction.

http://www.youtube.com/watch?v=hOLAGYmUQV0

3.1.LIVING ORGANISMS

Cells were discovered by using a microscope

By Robert Hooke (1665)

The first cell description ever

3) All the living beings in the biosphere are formed by cells

In a cork

3.1.LIVING ORGANISMS