Cell Structure/Cell Transport

Basic unit of all organisms. All living things are composed of cells.

Thin hollow cylinders made of protein that provide structural support for eukaryotic cells.

Thin solid protein fibers that provide structural support for eukaryotic cells.

Flexible boundary between a cell and its environment. Allows materials to enter and leave a cell. Gatekeeper.

Found in animals cells and they help in Cell Division.

Eukaryotic membrane bound organelles that transform energy stored in food molecules. Powerhouse.

Chlorophyll containing organelles found in the cells of green plants and some protists. Change light energy into chemical energy.

In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA. Control Center.

Organelle where proteins are assembled.

Fairly rigid structure located outside the plasma membrane of plants. Also in bacteria and funguses.

Fluid in cells in which organelles float. Site of numerous chemical reactions.

Membrane bound structures with particular function within eukaryotic cells.

Membrane-bound space in the cytoplasm of cells used for the temporary storage of materials.

Layout and function of organelles of the biological cell.

Organelle in eukaryotic cells made of tubular membranes. Packages and sorts proteins and sends them to their destination.

Cells of various types have different functions. Example: Nerve Cells, Bone cells.

Cells that lack internal membrane bound structures. Bacteria.

Cells that contain a true nucleus and membrane bound organelles.

The theory that 1. All organisms are composed of one or more cells. 2. The cell is the basic unit and structure and organization of organisms. 3. All cells come from preexisting cells.

Found in eukaryotic cells in the cytoplasm. Site of cellular chemical reactions. Rough or Smooth.

Organelles that contain digestive enzymes. Digest excess or worn out organelles, food particles, and engulfed viruses and bacteria.

Structural model of the plasma membrane.

Cells transport materials across a cell membrane against the concentration gradient. Requires energy.

Movement of particles across a cell membrane by diffusion or osmosis. Requires NO energy.

Active transport process by which materials are secreted or expelled from a cell.

Active transport process where a cell engulfs materials.

Diffusion of water across a selectively permeable membrane. Depending on the concentration of solutes on either side of the membrane.

Random movement of particles from an area of high concentration to an area of low concentration. Results in an even distribution of particles.

Solution in which the concentration of dissolved substances is lower in the solution outside of the cell than the concentration inside of the cell. Causes a cell to swell and possibly burst as water enters the cell.

Solution in which the concentration of dissolved substances outside the cell is higher than the concentration inside the cell. Causes a cell to shrink.

Solution in which the concentration of dissolved substances in the solution outside of the cell is the same as the concentration of dissolved substance inside of the cell.

Not allowing the passage of particles or substances.

To allow passage of particles or substances.

Uneven distribution of a substance across a cell or plasma membrane.

Passive transport of materials across a cell membrane by transport proteins embedded in the cell membrane.

Result of diffusion where there is continuous movement of particles but no overall change in the concentration.

Allows some molecules into the cell while keeping others out.

Proteins that are found in the plasma membrane. Allow the membrane to be selectively permeable. Allows molecules to enter and leave.