part 1

• The biosphere consists of all life on earth and all the places where life exists.
• An ecosystem consists of all living things in a particular area along with the nonliving components of the environment with which life interacts with.
• The North American mountain is an example of an ecosystem.
• A biological community is the array of organisms inhabiting a particular ecosystem. They may be enormous animals or microorganisms.
• The life forms in a biological community belongs to a species, a group whose members can only reproduce with other members of the group.
• A population consists of all the individuals of a species living within the bounds of a specified area that interbreeds with each other. 
• An organism is an individual living thing. Just like bacterium, meadows, and fungus. 
• A unicellular organism exists only as a single cell- like amoeba.
• A multicellular organism exists as a group of cells to become an individual organism.
• An organ system is a group of organs that work to perform one or more functions.
• The organ is the architecture of a complex organism that has specific functions within the body.
• The tissues are a group of cells that work together to perform a specialized function.
• The cells is the life’s fundamental unit
• Organelles are the functional component present in cells, similar to a chloroplast.
• Molecules are the chemical structure consisting of two or more units called atoms
• Cell differentiation is the process of forming specialized tissues with different functions- or simply emergent properties.
•  Systems biology is the exploration of emergent properties that analyzes and studies the interactions among its parts.
• Emergent properties are properties that become apparent and result from various interacting components within a system but are properties that do not belong to the individual components themselves.