PMA2 Review

Front

What is the effect of salt concentration on potato tissue mass?

Back

As the salt concentration decreases, the mass of potato tissue increases.

Front

In which organelle does aerobic cellular respiration occur?

Back

Mitochondria.

Front

What is the process called when cells use energy to transport materials across the cell membrane?

Back

Active transport.

Front

What conclusion can be drawn from the graph showing atmospheric carbon dioxide levels since 1960?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

What is cohesion?

Back

The ability of a molecule to 'stick' to itself.

Front

What is osmosis?

Back

The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the role of mitochondria in cells?

Back

Mitochondria are the organelles where aerobic cellular respiration occurs, producing energy (ATP) for the cell.

Front

Define active transport in cellular processes.

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion is the passive movement of molecules from high to low concentration without assistance, while facilitated diffusion requires specific transport proteins.

Front

What is the significance of carbon dioxide levels in the atmosphere?

Back

Increased carbon dioxide levels contribute to climate change and global warming.