THE CELL by Francisco Tranchino Natural Science. Unit 1
All living things are made of cells
Natural Science. Unit 1
but‌ Natural Science. Unit 1
What’s a cell? The smallest unit of life It performs the three vital functions: • nutrition • interaction • reproduction
Natural Science. Unit 1
Animal cell and plant cell, ďƒ˜Animal cell similar or differents?
Natural Science. Unit 1
Animal cell parts
Perform various cell functions, such as manufacturing Is the outer shell chemicals and of the cell and obtaining energy takes part in the cytoplasminteraction function
nucleus
A viscous liquid cell inside the cell which the membrane organelles float the Contains inmaterial necessary to reproduce the cell
organelles Natural Science. Unit 1
ďƒ˜Plant
cell
Natural Science. Unit 1
Plant cell parts Are green organelles that capture light and produce nutrients
Separate the nucleus from the cytoplasm
cell wall
Rigid structure chloroplasts that surrounds the cell membrane and protects the cell
membrane Natural Science. Unit 1
Living things can be composed of:
How are cells organized?
ď‚› A single
cell
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ď‚› Two
or more cells
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ď‚› In
multicellular organisms, cells are grouped to form different levels of organisation organism
cells
system
tissue
organs Natural Science. Unit 1
ď‚› Types
of cells
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Who discovered cells? First to discover and name cells ď‚›
Robert Hooke in 1665
First to observe live cells ď‚›
Antony van Leeuwenhoek in 1674
Natural Science. Unit 1
ts c a f un f e Som ut cells abo The word cell comes from the Latin word cellula, which means small compartment. One of the largest known cells is the ostrich egg which can weigh over three pounds. There are 200 types of cells in the human body. From 50 to 70 billion cells die in the human body each day. Natural Science. Unit 1
Sources: CONTENTS: Natural Science 5 Primary. Savia. SM. www.ducksters.com www.livescience.com IMAGES: Wikimedia www.animalesyanimales.com 5astandrew.blogspot.com.es http://www.biology-questionsand-answers.com/ http://www.microscopy-uk.org.uk/
Natural Science. Unit 1