Living matter

LIVING MATTER

NATURAL SCIENCES (3º ESO). ANA MARCHAL MARTÍNEZ

TASK 3.1. OVERVIEW. LEVELS OF ORGANISATION

Types of levels of organisation: Abiotic: the components are not alive.

Subatomic level. Atomic level. Molecular level.

Biotic: they are exclusive to living beings. Cellular level. Pluricellular level

Tissues Organs Systems or apparatus Organism

Population level Ecosystem level

Give an example of each level.


WHAT ARE LIVING BEINGS MADE UP OF?

Water: More than a half of our

body is water. Water is used for:

Carrying out reactions of living beings.

Transporting substances.

Giving shape to cells. Regulating the

temperature of the body.



Mineral salts: Make up the solid

parts of living beings: Shell of moluscs Skeletons

Are in dissolutions in the form of ions and: Mantain the salinity of

the body. Allow the transmision

of nervous impulses Form a part of

significant molecules such as haemoglobing.



TYPE OF MOLECULE

SIZE CHARACTERISTICS

EXAMPLES

Monosaccharides

3-8 molecules •They taste sweet.•They dissolve in water

Glocose, fructose and galactose.

Disaccharides Formed by the union of two monosaccharides

•They taste sweet.•They dissolve in water

•Saccharose= glucose + fructose•Lactose= galactose + glucose.

Polysaccharides

A lot of monosaccharides joined together

•They taste sweet.•They do NOT dissolve in water

Starch (in plants)and gycogen (in animals): energetic functionCellulose ( in plants) and chitin(in animals) structural function•Where can we find chitin?


•NUCLEIC ACIDS:

•LIPIDS:


LIPIDS

• Made up of: C, H & O.

(sometimes phosphorous)

• Oils, fats, waxes,

cholesterol, etc.

• They are NOT soluble in

water.

• They are used as

energetic substances

• Important role in the

structure of the cells.


PROTEINS

They have: C, H, O & a small portion of sulphur.

They are made up of the linking of amino acids.

Functions: They are an important part of

cell structure. They accelerate chemical

reactions. They carry substances from

one part of the body to another.

Defence: antibodies defend ourselves from viruses and bacteria


NUCLEIC ACIDS

·DNA & RNA

·They contain: C, H, O & N

·They are formed by the union of nucleotides.

·They store information


PROKARYOTIC CELL


WHAT ARE THE INSIDE OF CELLS LIKE?


MITOSIS


IT’S MITOSIS


BIO MITOSIS SONG


THANK YOU FOR PAYING ATTENTION TO ME!!!

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Living matter