SCIENCE TEST FEB 3

Passive transport

• moves molecules in & out of a cell without using the cell’s energy.

• moves molecules in & out of a cell by using the cell’s energy.

• the process by which molecules at a higher concentration move to an area of lower concentration.

•  type of diffusion in which water molecules move from a higher concentration to a lower concentration through a semipermeable membrane

Tags

NGSS.MS-LS1-2

Active transport

• a type of diffusion in which water molecules move from a higher concentration to a lower concentration through a semipermeable membrane.

• moves molecules in & out of a cell by using the cell’s energy

• moves molecules in & out of a cell without using the cell’s energy.

• the process by which molecules at a higher concentration move to an area of lower concentration.

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-3

Diffusion

• the process by which molecules at a higher concentration move to an area of lower concentration.

• moves molecules in & out of a cell without using the cell’s energy

• moves molecules in & out of a cell by using the cell’s energy.

• the process by which molecules at a higher concentration move to an area of lower concentration.

Osmosis

• moves molecules in & out of a cell without using the cell’s energy.

• moves molecules in & out of a cell by using the cell’s energy

• a type of diffusion in which water molecules move from a higher concentration to a lower concentration through a semipermeable membrane

• moves molecules in & out of a cell without using the cell’s energy

Semipermeable (selectively)

• moves molecules in & out of a cell by using the cell’s energy

• moves molecules in & out of a cell without using the cell’s energy

• a type of diffusion in which water molecules move from a higher concentration to a lower concentration through a semipermeable membrane.

• allows some molecules to pass through but no other molecules

Hypotonic

• solution has a lower concentration of solute than the solution it’s being compared to. Meaning that water will move out of the hypotonic solution.

•  solution has a higher concentration of solute than the solution it’s being compared to. This means that water will move into the hypertonic solution.

• allows some molecules to pass through but no other molecules.

Tags

NGSS.MS-LS1-2

hypertonic

• solution has a higher concentration of solute than the solution it’s being compared to. This means that water will move into the hypertonic solution.

• the process by which molecules at a higher concentration move to an area of lower concentration.

• solution has a lower concentration of solute than the solution it’s being compared to. This means that water will move out of the hypotonic solution. 

Tags

NGSS.MS-LS1-2

Isotonic

• solution has a higher concentration of solute than the solution it’s being compared to. This means that water will move into the hypertonic solution.

• solution has a lower concentration of solute than the solution it’s being compared to. This means that water will move out of the hypotonic solution. 

•  has the same or nearly the same solute concentration as the solution it is being compared to.

When is Active transport used in a cell

• 1. Needed molecules are too big to fit through the pores in the cell membrane.

  2.  Needed molecules are at a higher concentration inside the cell than outside.

• 1.  Endocytosis involves a cell slowly surrounding a particle by stretching the cell membrane, and pulling the particle inside of the membrane.

  2. Exocytosis involves a cell pushing large particles that are inside the cell membrane out of the cell. 

What are the two kinds of Active Transport

• 1.  Endocytosis involves a cell slowly surrounding a particle by stretching the cell membrane, and pulling the particle inside of the membrane.

  2. Exocytosis involves a cell pushing large particles that are inside the cell membrane out of the cell. 

• 1.  Needed molecules are too big to fit through the pores in the cell membrane.

  2.  Needed molecules are at a higher concentration inside the cell than outside.