BIOLOGY AND THE CHARACTERISTICS OF LIVING THINGS.
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Transcript of BIOLOGY AND THE CHARACTERISTICS OF LIVING THINGS.
BIOLOGY AND THE CHARACTERISTICS OF
LIVING THINGS
Bell Ringer Part 1• On the next open page in your journal
write the title Characteristics of Life.
• Write the following statement and bullet point at least 8 things that you think could accurately fill in the blank.
• In order for something to be alive, it must:_________________
Bell Ringer Part 2• Now make a table using the following list
to fill the left side column. Using your ideas for what is living, determine if the items on the list are living or non living:
tree, rock, boy, fire, wind, rabbit, cloud, feather, grass, seed, egg, bacteria, cell, molecule, sun, mushroom, potato,
detached leaf, butterfly, pupae, fossil, hibernating bear, mitochondria, river
What is Biology ?
• Study of life
• Helps us understand the living world
How do we know if something is living?
ALL LIVING THINGS :ALL LIVING THINGS :
1. Are made of cells1. Are made of cells
2. Can reproduce2. Can reproduce
3. Have a genetic code3. Have a genetic code
4.4. Grow and developGrow and develop
5.5. Obtain/use materials and energyObtain/use materials and energy
6.6. Respond to environmentRespond to environment
7.7. Maintain homeostasisMaintain homeostasis
8.8. Change over timeChange over time
1. Made of cells
• A cell is a collection of living matter enclosed by a membrane
• Smallest living unit of a living organism
• Sexual reproduction– Formation of an organism
from the union of gametes
from two parent organisms.
• Asexual reproduction– Formation of an
organism genetically
identical to the parent
that does not involve
the union of a sperm and an egg.
2. Can Reproduce
3. Have a genetic Code
• The genetic code with minor variations determines the inherited traits– DNA– RNA
4. Grow and Develop
• Grow and/or develop during part of their lives– Increase in size– Develop over time in different physical stages
5. Obtain/Use Materials and Energy
• Metabolism– Build up and break down of materials as it
carries out life processes– i.e. photosynthesis, cellular respiration
• Store and use energy
6. Respond to Environment• Stimulus
– Signal to which an organism responds• External--Outside of the organism (i.e.
temperature, light)• Internal--Within the organism (i.e. blood sugar
level)
7. Maintaining Homeostasis
• Homeostasis — balance within an organism
Example:
* sweating in
to cool down
* your body can regulate
blood sugar.
8. Evolve
• Change over long periods of time
• Organisms evolve in order to adjust to the
environment.