Biology 1st semester review: Units 5-6

Front

What is osmosis?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and shrink because the concentration of solutes outside the cell is higher than inside.

Front

What is the primary function of mitochondria?

Back

Energy production through the process of cellular respiration.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs sunlight, which is essential for converting carbon dioxide and water into glucose and oxygen.

Front

What is the structure of the cell membrane?

Back

The cell membrane is composed of a lipid bilayer with embedded proteins, which controls the movement of substances in and out of the cell.

Front

What is the function of ribosomes?

Back

Ribosomes are responsible for protein synthesis in the cell.

Front

What is the difference between aerobic and anaerobic respiration?

Back

Aerobic respiration requires oxygen and produces more energy, while anaerobic respiration occurs without oxygen and produces less energy.

Front

What is homeostasis?

Back

The process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the function of vacuoles in plant cells?

Back

Vacuoles store nutrients, waste products, and help maintain turgor pressure in plant cells.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.