Semester 1 Week 1 Flashcards
What are the 7 properties of living organisms?
1) Composed of cells
2) Reproduction
3) Growth and development
4) Capable of energy processing
5) Respond to stimuli in environment
6) Regulate internal conditions (Homeostasis)
7) Evolutionary adaptation
What is the biological hierarchy? (Levels of organisation)
Molecule -> Organelle -> Cell -> Tissue -> Organ -> Organ system -> Organism -> Population -> Community -> Ecosystem -> Biome -> Biosphere (planet)
Taxonomy, How are living organisms classified?
Domain -> Kingdom -> Phylum -> Class -> Order -> Family -> Genus -> Species
Why are animals called heterotrophs?
Animals are called heterotrophs because they don’t perform photosynthesis, they get their energy from food (they eat plants and other animals).
What is an organelle?
An organelle is a specialised subunit in a cell that has a specific function (e.g. mitochondria).
What is a cell?
A cell is the basic structural unit of all forms of life. The cell is the lowest level of organisation that can perform all activities required for life.
What is a tissue?
A tissue is a group of similar cells that carry out a specific function together.
What is an organ?
An organ is a group of tissues that perform a specific function in the body (e.g. heart).
What is an organ system?
A group of organs that work together to perform a function in organisms body.
What is an organism?
An organism is any living thing that functions as an individual.
What is a population?
A group of organisms of the same species living in the same area
What is a community?
A community consists of groups of different species living in the same area.
What is an ecosystem?
An ecosystem consists of multiple communities and their physical environment (e.g. coral reef).
What is a biome?
A biome is a large area defined by distinct characteristics (e.g tropical rainforest).
What is a producer?
A producer is an organism that converts light energy into chemical energy by doing photosynthesis.