Chapter 2 ( Life ) Flashcards
(14 cards)
Organism
Living things
Characteristics of life
- Organisms have life cycles
- They reproduce
- They grow and develop
- They are made of organic compounds
- They are all made of cells
- They all die
Unicellular
One cell
Multicellular
Many cells
Autotrophic
Produce by their own energy
Heterotrophic
Consume energy
Robert Hooke
Spent much of his time life devoted to the observation and is known for helping the develop the cell theory.
Studied cork and called them rooms
The cell theory
All organisms are made of cells
The cell performs the function of life
All cells come from pre existing cells
Cells are composed of smaller substances
Molecules
4 general molecules are
Carbohydrates
Lipids
Proteins
Nucleic acids
Carbohydrates
Sugars and starch
A fuel source with glucose
Lipids
Fat Important to health : Store energy in body Compose to boundaries of cells Transport molecules
Proteins
Building blocks of cells composed to anime acids
Nucleic acids
Are DNA and RNA
Makes everything in life