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13 Characteristics of Living Things
Transcript of 13 Characteristics of Living Things
DEVELOP = CHANGE
Takes place in the form of maturing, ripening, learning to do tasks, etc.
Develop is different from grow BECAUSE developing may not always be seen, it can be internal changes as well.
2. G R O W
Living things grow as the life span progresses.
1. Life Span
WATER!!! - Cells hold water and is needed for chemical reactions
(70% of living things are made up of water!)
Nutrition provides ENERGY used to do daily processes and all extra activities
Anything the organism does not need is EXCRETED in the form of a solid, liquid, or gas.
If they are not eliminated, the organism will die or burst!
Keep in mind, waste may be important for another species. Examples: Cow manure is fertilizer
Carbon Dioxide is used by plants and oxygen is used by humans.
because organisms also need SPECIFIC trace vitamins and mineral to live.
These are necessary for SPECIFIC chemical reactions and processes. This all depends on the organism. Not all need the same
Response to the environment to maintain HOMEOSTASIS --> meaning constant changes and quick reactions.
7. CELLULAR Respiration
Use of oxygen to release energy to live
(This takes place in the MITOCHONDRIA)
1, 2, 3 get started!
Survival in the Environment
13 Characteristics of Living Things
Without these, the organism cannot survive
Synthesize = Make something
Some things are synthesized to keep the organism alive or to be secreted/given off
10. Adapt to Environment
SLOW change in the whole species NOT the individual
Survival of the Fittest!
Does not ALWAYS mean moving from one place to another
Plants can't walk! They follow the sun, move water, fight gravity, and can move depending on touch
Reproduce - species makes more of itself
Asexual - 1 cell becomes 2 cells
does NOT need 2 parents
cells are replicas of original cell
Sexual - need two parents
get 1/2 characteristics from each
new cells are UNIQUE to the organism
1. ALL living things have cells
2. Cells are the smallest level
Keep in mind structure and function for cell in the organism
3. All cells come from other living things
If all these tests proved cells need other cells to live, why is a THEORY and not a law?
A theory is tested over and over through observations and can be proven wrong
A law is repeated observations and CANNOT be proven wrong
If that is true, how can we tell how the first cells came to be?
There are many theories and beliefs that CANNOT be proven true nor proven wrong.
Francesco Redi - was "ready" to start the experiments using meat
Lorenzo Spallenazni - used broth and experiemented
Louis Pasteur - did more experiments to prove expose to "air" did not cause changes but that it was SOMETHING in the air
OLD belief that living things could come from nonliving things --> NOT POSSIBLE!!!!
Through scientific research and experiments - PROVED that living can only come from living
This is where we get BIOGENESIS
Bio - - genesis = life, start of
Small pieces, Big Picture