STAAR Biology Category 1

Front

What are stem cells?

Back

Stem cells are undifferentiated cells that can turn into other types of cells.

Front

What type of transport across the membrane requires energy?

Back

Active transport requires energy.

Front

What does it mean when a solution is isotonic?

Back

When the concentration of solutes on both sides of a membrane is the SAME, the solution is isotonic.

Front

What does semi-permeable mean?

Back

Semi-permeable means to allow only some materials across the membrane.

Front

What is the function of a cell membrane?

Back

The cell membrane controls what enters and exits the cell.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a semi-permeable membrane.

Front

What is the difference between hypertonic and hypotonic solutions?

Back

Hypertonic solutions have a higher concentration of solutes compared to the cell, while hypotonic solutions have a lower concentration.

Front

What is the role of ATP in cellular processes?

Back

ATP provides the energy needed for various cellular processes.

Front

What is the significance of cell differentiation?

Back

Cell differentiation allows cells to develop specialized functions.