Introduction To Cells

Front

What do new cells help an organism do?

Back

Grow and replace old cells.

Front

What can new cells only be produced by?

Back

Existing cells.

Front

What type of organisms are made of just one cell?

Back

Unicellular organisms.

Front

Why are most cells not visible to the unaided eye?

Back

Because they are too small.

Front

How many cells is a human made up of?

Back

More than 30 trillion.

Front

What is the basic unit of life?

Back

The cell.

Front

What is the function of the cell membrane?

Back

To protect the cell and control what enters and leaves.

Front

What is cytoplasm?

Back

The jelly-like substance inside the cell where organelles are found.

Front

What are organelles?

Back

Specialized structures within a cell that perform specific functions.

Front

What is the nucleus?

Back

The control center of the cell that contains DNA.