Science Lessons 3-6

What does the cell membrane do

• The cell membrane is responsible for cell division.
• The cell membrane regulates the movement of substances in and out of the cell.
• The cell membrane produces energy for the cell.
• The cell membrane stores genetic information.

What is a permeable(selectively) membrane

• A permeable membrane is a barrier that allows certain substances to pass through while blocking others.
• A permeable membrane is completely impermeable to all substances.
• A permeable membrane allows all substances to pass through without restriction.
• A permeable membrane is a solid barrier that does not allow any substances to pass.

What are the two methods of transport the cell use to move materials throughout it

• Passive transport and active transport
• Cytokinesis and mitosis
• Endocytosis and exocytosis
• Diffusion and osmosis

What is passive transport

What is active transport

What is diffusion

• Diffusion is the transfer of energy from one particle to another.
• Diffusion refers to the mixing of two substances in equal proportions.
• Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
• Diffusion is the process of particles moving randomly without any concentration gradient.

What is Osmosis

• Osmosis is the diffusion of gases in the atmosphere.
• Osmosis is the process of photosynthesis in plants.
• Osmosis refers to the movement of nutrients into cells.
• Osmosis is the movement of water across a semipermeable membrane.

What is facilitated diffusion

• Facilitated diffusion requires energy input to move molecules.
• Facilitated diffusion is a type of active transport that moves molecules against their concentration gradient.
• Facilitated diffusion only occurs in plant cells and not in animal cells.
• Facilitated diffusion is a type of passive transport that uses transport proteins to move molecules across a cell membrane.

What is the difference between endocytosis and exocytosis

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Tags

NGSS.MS-LS1-2