2. Organization of Life notes

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Transcript 2. Organization of Life notes

Organization of Life
How are living things organized?
There are various levels of organization:
Let’s start small
and get bigger.
1) Atoms
Atoms are the smallest
unit of matter that
have the chemical
properties of a
particular element.
Examples:
Carbon, Hydrogen, Oxygen…
2) Molecules
Molecules that are the small building blocks
from which larger molecules are made.
Examples:
Glucose
Amino Acid
Water
3) Macromolecules
Large molecules consisting of many subunits.
Examples:
Protein
Cellulose
4) Organelles
Specialized structures inside of a cell.
Examples:
Mitochondria
Cell Membrane
5) Cells
The smallest unit of biological organization
that biologists consider alive.
Example:
6) Tissue
A group of distinct and similar cells that
carry out a specific set of functions.
Examples:
Muscle
Skin
7) Organ
Groups of tissues organized together to carry
out a particular set of functions.
Examples:
Brain
Stomach
8) Organ System
Groups of organs that function together
to carry out broad sets of functions.
Example:
9) Organism (or individual)
Individual that has its own distinct existence as a
complex, reproducing unit.
Examples:
10) Population
Group of freely interacting and breeding
individuals of the same species.
Examples:
School of fish
Herd of Zebra
11) Community
Populations of different species living and
interacting together in a distinct area.
Example:
Marine community
12) Ecosystem
Distinguishable groups of species and the abiotic
(non-living) components of the environment with
which the living creatures interact.
Examples:
13.) Biosphere
• I’m sure you can figure this one out!