Fall Final Review

Front

How do very large particles like food and wastes travel in and out of the cell?

Back

Endocytosis and exocytosis are processes that allow large particles to enter (endocytosis) or exit (exocytosis) the cell by engulfing them in a membrane.

Front

What might cause a cell to burst?

Back

A cell may burst due to excessive water intake, often caused by a hypotonic environment where the concentration of solutes outside the cell is lower than inside, leading to water influx.

Front

What is the role of chlorophyll in plants?

Back

Chlorophyll is a light-absorbing molecule that absorbs most wavelengths of light, except for green, which it reflects, allowing plants to perform photosynthesis.

Front

What macromolecule is vital for the formation of cell membranes?

Back

Phospholipids are essential for forming cell membranes, creating a bilayer that separates the interior of the cell from the external environment.

Front

What macromolecule serves as a source of quick energy and structural components in plants?

Back

Carbohydrates provide quick energy, stored energy, and are structural components of plant cell walls.

Front

Define diffusion.

Back

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

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the function of proteins in the cell membrane?

Back

Proteins in the cell membrane serve various functions, including transport, acting as channels or carriers, and facilitating communication between the cell and its environment.

Front

What are nucleic acids?

Back

Nucleic acids, such as DNA and RNA, are macromolecules that store and transmit genetic information.

Front

What is the difference between endocytosis and exocytosis?

Back

Endocytosis is the process of taking substances into the cell, while exocytosis is the process of expelling substances from the cell.