examen science

Page 1

Science LIVING THINGS 1.- Completa Humans beings, like other living things, are made up of……………………… All ………………..are very small and can only be ………………………..through a ……………………………. However, they can differ different………………………..

in……………………Cells

can

also

Cells are …………………….units and …………………………………………the three processes: 1.-………………………………… ……………………………………..

have

can

2.-………………………………………

3.-

2.-Completa

Cells

are

the

…………………………………………………………………………………………………… …………. All …………………………………………………………are made up of cells. Most cells are very…………… can only be seen …………………………………a microscope.

Cells are living units and they …………………………….the three basic live processes. 1.-………………....................cells….....................................................

in

this

processes

…………………………………………………………………………………………………… …………………… 2.…………………………….……in ………………………………………………………..

this

processes

cells

…………………………………………………………………………………………………… ………………… 3.……………………………….in cells……………………………………………………….

this

processes


…………………………………………………………………………………………………… …………. ***IN ADICTION, cells can…………………………………………….to perform a particular function. Depending on the number of cells, living things can be classified into: a.-………………………....-living things……………………………………………………………………………….. b.-…………………….....-living …………………………………………………………………………………

things

WHAT ARE CELLS LIKE? Cells are ………………………………………….,but still………………………………………………For ………………………………………, as………………………………………………, are……………………

they

can example: known

…………………………………………………………………………………………………… ………………… Cells can also differ in………………………………They be……………………………..,……………………………,

can

…………………………………………………,………………………………………etc….

THE PARTS OF A CELL Cells have............................main parts: 1.-…………………………………………..is…………………………………………………………………….

This

2.-………………………………………….…………………………………………………………………………………………………. 3.………………………………………………………………………………………………………………….....................

…………………………………………………………………………………………….. ……………………………………………………………………………………………


ANIMALS AND PLANTS CELLS All animal and plants cells …………………………………….. and a

have

………………………………………..,

………………………………………………………………………………..However……… ………………….and plants cells are different because: *Plant cells have……………………………………………………….around the……………………………… That is why……………………………………………………………………………………… ………………………. ………………………………………………………………………………………… ……… *Plant cells have………………………………………………………………..............called… ………………….. that…………………………………………………………………………, which plants need …………………… ……………………………………………………………………………….. *Plant cells are………………………………....than animal cells and have a ……………………shape Animal cells can be ……………………………………………………………………………. LEVELS OF ORGANIZATION Multicelular living things are of…………………………………………………………………….. These cells work ………………………………at called…………………………………….

made

up

different

levels

TISSUES: …………………………………………………………………………………………………… ………………………… …………………………………………………….. For example: *Animals have……………………………………………which consist of…………………………… *Plants have……………………………………………….which consist mainly…………………… …………………………………………….. ORGANS :………………………………………………………………………Tissues organs work ……………to …………………………………………………………………………..

in


………………………………..,……………………………….,the the……………………..are animals organs.

heart

and

Leaves and flowers are………………………………………………………….. For example, a leaf is an organ which consist of several……………………..These ………………......carry out different ……………………………….in the leaf, such as providing……………………………….and……….., or performing…………………………………………….

SYSTEMS.……………………………………………………………………………..Organs systems work…………….. to………………………………………………………………..

in together

For example, the………………………………………….makes our body move, and the digestive system …………………………..our body to obtain ………………………….we need to live

ORGANISMS.…………………………………………………………………………………………………… ………………..

…………………………………………………………………………………………………… ………………….. In a multicellular living things,cells,……………………………………,organs and……………………..work together, so the organism functions ………………………………….. In a unicellular living things, such a ……………………….., there is only the first level of organization, the cell.This one cell has to …………………………………all the functions of the living things.

ANIMAL TISSUES Animal have different types of…………………………………..which perform different…………………… THE MAIN TYPES OF TISSUES IN MAMMALS ARE: 1.-_______________________.of……………………………………………………….It forms………… …………………………………the body.

consist and


2.-______________________.………………………………………………………………………It movement. 3.-______________________.Is made up ……………….substances………………. the body.

of

is…………………

of

blood

It

cells.

4.-______________________.-is made up of neurons. It carries information to the ……………… and ………………………………………to the rest of the body 5.-____________________.-consist of fat cells. It ….in……………………… fat

is …………………………..

6.-_______________________.-consist of ………………………………..cells. It forms the skin and ……………………………..protection to the body.

PLANT TISSUES Plants also have different types of……………………………… THE MAIN TYPES OF TISSUES IN A TREE: 1.-……………………………………………………--…………………....the leaves and young……………………….and ………………..protection. 2.- …………………………………………..…….---makes up most of the plant. It …………………………..support, stores ……………………………..and ……………………………………………………….. ……………………………………………. 3.-………………………………………………..-found the………………………………..and………………………………

in

It is responsible for………………………………………………………………………………………………… …….



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