Characteristics of Life Flashcards
What is biology?
The scientific study of life
What is the smallest unit of life?
The most basic fundamental unit of life is the cell
What is an organism?
Any individual form of life, which can be unicellular or multicellular
Fill in the blank the 8 characteristics of life
- All living organisms are [ X ]
- All living organisms are [ X ]
- All living organisms respond to [ X ]
- All living organisms maintain [ X ]
- All living organisms have the ability to [ X ]
- All living organisms acquire and utilise [ X ] from the environment.
- All living organisms contain [ X ]
- All living organisms have the ability to [ X ]
- All living organisms are cellular
- All living organisms are organised
- All living organisms respond to environmental stimuli
- All living organisms maintain homeostasis
- All living organisms have the ability to reproduce
- All living organisms acquire and utilise energy from the environment
- All living organisms contain genetic information
- All living organisms have the ability to evolve
Why are viruses not considered alive?
They lack some characteristics of life, such as the ability to reproduce on their own
What is an atom?
The smallest particle of an element
What is a molecule?
A combination of atoms that are joined together
What is an organelle?
A specialised structure found within cells
What is a cell?
The smallest and most basic unit of life
What is a tissue?
A group of the same type of cells performing a specific function
What is an organ?
A group of tissues performing a specific function
What is an organ system?
A group of organs working together to perform a specific function
What is a multicellular organism?
An individual form of life composed of many cells
What is a population?
All organisms of the same species living in the same area
What is a community?
Multiple populations of different species living in the same area
What is an ecosystem?
A living community (biotic) and the non-living surroundings (abiotic) in the same area
What is the biosphere?
All of the different ecosystems on Earth that support life
What are the 3 energy classifications for living organisms?
- Autotrophs
- Heterotrophs
- Decomposers
What are autotrophs?
Producers that acquire energy by making their own food
What are heterotrophs?
Consumers that acquire energy by consuming other living organisms
What are decomposers?
Organisms that acquire energy by consuming waste