Cell System and Transport Mechanisms

What allows the cell to maintain homeostasis?

• Nucleus
• Cytoplasm
• Ribosomes
• Cell membrane (plasma membrane)

Tags

NGSS.MS-LS1-2

flexible membrane surrounds the cell and controls what is going in and out

• Nucleus
• Cell membrane
• Cell wall
• Cytoplasm

Tags

NGSS.MS-LS1-2

What is selective permeability?

• ability of a membrane to absorb nutrients without restriction

• ability of a membrane to allow certain molecules to pass while restricting others.

• the process of filtering all substances equally.

• ability to allow all molecules to pass freely.

Tags

NGSS.MS-LS1-2

passive transport is

• movement of substances across a cell membrane without the use of energy.

• movement of substances against their concentration gradient.

• only occurs in plant cells.

• requires energy to move substances across a cell membrane.

the process by which molecules move from an area of high concentration to area of low concentration

• Facilitated Diffusion
• Diffusion
• Active Transport
• Osmosis

it is the diffusion of water across a selectively permeable membrane

• Osmosis
• Diffusion
• Filtration
• Active transport

a process in which insulin in cell membranes forms channels through which the sugar pass through

• diffusion

• Facilitated diffusion

• Active transport

• direct transport

movement of molecules from low concentration to high concentration using energy

• Active transport
• Osmosis
• Diffusion
• Passive transport

it is a process in which the cell membrane takes food particles into the cell by changing its shape and engulfing it

• Exocytosis
• Endocytosis
• Osmosis
• passive transport

a process during which the vacuole surrounds the food particles, fuses the cell membrane forcing the contents out of the cell

• Endocytosis
• Exocytosis
• Phagocytosis
• Osmosis