2025 Cells, Cell Transport, Cell Membrane, Cell Theory

Front

What is the function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, providing protection and support.

Tags

NGSS.MS-LS1-2

Front

Define hydrophobic in the context of cell membranes.

Back

Hydrophobic refers to molecules that do not interact well with water; in cell membranes, hydrophobic regions repel water and help form the lipid bilayer.

Front

What is osmosis?

Back

Osmosis is 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 chloroplasts in plant cells?

Back

Chloroplasts are organelles that conduct photosynthesis, converting light energy into chemical energy stored in glucose.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Front

What distinguishes eukaryotic cells from prokaryotic cells?

Back

Eukaryotic cells have a nucleus and membrane-bound organelles, while prokaryotic cells do not.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles that fuse with the cell membrane.

Front

Define cell theory.

Back

Cell theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells.

Tags

NGSS.HS-LS1-4

Front

What is the structure of a phospholipid?

Back

A phospholipid consists of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.