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Introduction to biology
• Starting with biology in general:
Biology: is the scientific study of life that have properties
And the properties are:

❖ Order: the highly ordered structure
...

❖ Growth and development: consistent growth and development
controlled by
inherited DNA (increase in size)
...

~They are also are…
1
...
Regulation: control of an organism’s internal environment within
limits that sustain life
3
...


4
...
Organization
2
...
Energy and Matter
4
...
Evolution
~levels of organization are:
⚫Biosphere: all life on earth and the environments on Earth
that
support life
...

⚫ Population: all the individuals of a species living in a
specific area
...

And I living call can:
1)
2)
3)
4)

Regulate its internal environment (responsiveness)
Take in and use energy (metabolism)
Respond to its environment (responsiveness)
Develop and maintain its complex organization, and (growth
and order)
...

~There are to basic types of cells:
=Prokaryotic cells:
-Were the first to evolve
...

-Are usually smaller than eukaryotic cells
...


( Prokaryotic )

(Eukaryotic)

In most ecosystems:
-Plants are the producers that provide the food,
- Consumers eat plants and other animals, and
-Decomposers (Saprophytes)act as recyclers, changing complex
matter into simpler mineral nutrients

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