Levels of Organization

Define cell differentiation in your own words.

Answer explanation

Cell differentiation is the specialization of cells that perform specific functions.

Distinguish between an organ and an organ system.

Answer explanation

An organ is made up of tissues working together to perform a specific task while and organ system is made up of two or more organs working together to perform a series of tasks

Explain the difference between a unicellular organism and a multicellular organism.

Answer explanation

Unicellular organisms are composed of one cell, while multicellular organisms are composed of many cells.

Describe how cell differentiation produces different types of cells in animals.

Answer explanation

In animal cell differentiation, a stem cell can produce cells that become blood cells, muscle cells, or skin cells.

Which is the correct sequence of the levels or organization?

• cell → organ → tissue → organ system → organism
• organism → organ → organ system → tissue → cell
• cell → tissue → organ → organ system → organism
• tissue → organ → organism → organ system → cell

Predict A mistake occurs during mitosis of a muscle stem cell. how might this affect muscle tissue?

Compare the functions of a cell to the functions of an organism, such as getting rid of wastes.

Unicellular organisms do not have all the characteristics of life.

• True
• False

All the cells in a multicellular organism are the same.

• True
• False

Some organs work together as part of an organ system.

• True
• False