![knowt logo](https://s3.amazonaws.com/knowt.com/images/PDFLogo.png)
Characteristics of Life
Reproduction:
Asexual
Pros: fast, less resources, no male needed
Cons: No genetic diversity
Sexual
Pros: Genetic Variation
Cons: Slow, more resources needed, mate selection, not many offspring
Growth and development
Growth: increase in the number of cells
Development: changing forms
Infant β toddler β child
Energy processing
Metabolism: the sum of all chemical reactions
Catabolic: breaking down
Digestion: protein β amino acids
Cellular respiration: 6O2 + C6H12O6 β 6CO2 + H2O
Anabolic: building up
Protein synthesis: amino acids β protein
Photosynthesis: 6CO2 + H2O β C6H12O6 + 6O2
Regulation
Homeostasis: maintaining internal balance
Temperature
pH
Salinity
Response to stimuli: reacting to surroundings
Using five senses
Adaptation: change over time
Evolution
Organization: being made up of cells
Atoms β
Smallest form of an element
Molecules β
A compound of atoms
Cells β
Smallest forms of life
Tissue β
Groups of cells
Organs β
Groups of tissues
Organ systems β
Groups of organs
Organisms β
All organ systems put together
Populations β
Same species in the same area at the same time
Communities β
Different species interacting in the same environment
Ecosystems β
Species interacting with the environment
Biosphere β
Earth
Characteristics of Life
Reproduction:
Asexual
Pros: fast, less resources, no male needed
Cons: No genetic diversity
Sexual
Pros: Genetic Variation
Cons: Slow, more resources needed, mate selection, not many offspring
Growth and development
Growth: increase in the number of cells
Development: changing forms
Infant β toddler β child
Energy processing
Metabolism: the sum of all chemical reactions
Catabolic: breaking down
Digestion: protein β amino acids
Cellular respiration: 6O2 + C6H12O6 β 6CO2 + H2O
Anabolic: building up
Protein synthesis: amino acids β protein
Photosynthesis: 6CO2 + H2O β C6H12O6 + 6O2
Regulation
Homeostasis: maintaining internal balance
Temperature
pH
Salinity
Response to stimuli: reacting to surroundings
Using five senses
Adaptation: change over time
Evolution
Organization: being made up of cells
Atoms β
Smallest form of an element
Molecules β
A compound of atoms
Cells β
Smallest forms of life
Tissue β
Groups of cells
Organs β
Groups of tissues
Organ systems β
Groups of organs
Organisms β
All organ systems put together
Populations β
Same species in the same area at the same time
Communities β
Different species interacting in the same environment
Ecosystems β
Species interacting with the environment
Biosphere β
Earth