Test yourself under real exam conditions: 50 timed questions, 60 on the clock, pass mark 70%%. Instant score with a full review of everything you got wrong. Free — no account needed.
Exam details
Biology is the scientific study of life and living organisms, encompassing their structure, function, growth, origin, evolution, and distribution.
The seven characteristics are organization (cells), metabolism, homeostasis, growth, reproduction, response to stimuli, and adaptation through evolution.
The levels are atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
A cell is the basic structural and functional unit of all living organisms, often called the 'building block of life'.
The cell theory states that all living things are composed of cells, cells are the basic unit of life, and all cells come from pre-existing cells.