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In one type of cell division, a single cell forms two new cells. This process is called mitosis. What is a reason that human skin cells frequently undergo mitosis?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Homeostasis is necessary for a cell to survive. What is the definition of homeostasis?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Organisms can respond to changes in their environment in order to maintain a balance, called homeostasis. What does a tree do to maintain homeostasis during the winter months?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Which method of material exchange uses up energy?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Which of the following substances must animal cells take in from the environment to maintain homeostasis?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
Which statement correctly tells why the cells of unicellular and multicellular organisms divide?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
What is the result of homeostasis at the cellular level?
to replace dead or damaged skin cells
obtain energy
oxygen
The cell of unicellular organisms divide to reproduce; those of MO divide to replace cells and grow.
loses leaves
active transport
The environment within the cell is stable.
the maintenance of a stable internal environment
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