living beings are made of cells and grow
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Answer:
All living things are made of cells, use energy, respond to stimuli, grow and reproduce, and maintain homeostasis.
All living things consist of one or more cells. Cells are the basic units of structure and function of living organisms.
Energy is the ability to change or move matter. All life processes require energy, so all living things need energy.
All living things can sense and respond to stimuli in their environment. Stimuli might include temperature, light, or gravity.
All living things grow and reproduce. Multicellular organisms grow by increasing in cell size and number. Single-celled organisms increase in cell size. All organisms can normally reproduce, or produce offspring. Reproduction can be sexual or asexual.
All living things have ways of maintaining a stable internal environment. This stable condition is called homeostasis.
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Answer:
Defining Life
Five characteristics are used to define life. All living things share these characteristics. All living things:
are made of one or more cells.
need energy to stay alive.
respond to stimuli in their environment.
grow and reproduce.
maintain a stable internal environment.
Living Things Are Made of Cells
Cells are the basic building blocks of life. They are like tiny factories where virtually all life processes take place. Some living things, like the bacteria in Figure above, consist of just one cell. They are called single-celled organisms. You can see other single-celled organisms in Figure 2.2. Some living things are composed of a few to many trillions of cells. They are called multicellular organisms. Your body is composed of trillions of cells.
Green algae in a canal
The green scum in this canal consists of billions of single-celled green algae. Algae are plant-like microorganisms that produce food by photosynthesis.
Regardless of the type of organism, all living cells share certain basic structures. For example, all cells are enclosed by a membrane. The cell membrane separates the cell from its environment. It also controls what enters or leaves the cell.