Moving Materials

Why are there more dye particles in the right side of the membrane after 30 minutes?

• The membrane allowed active transport to take place

• he membrane is not like a cell membrane, so the dye can get through

• Only dye particles could move through the membrane

• Some of the dye molecules diffused through the membrane

Tags

NGSS.MS-PS1-2

What causes the dye particles to diffuse through the membrane?

• Particles move from an area of lower concentration to an area of higher concentration

• Particles move from an area of higher concentration to an area of lower concentration

• Particles move from an area of higher energy to an area of lower energy.

• Particles move from an area of lower energy to an area of higher energy

What is the job of a channel protein?

• strengthen the outer boundary of the cell

• allow certain materials to enter or leave the cell

• exchange organelles or chromosomes between cells

Tags

NGSS.MS-LS1-2

Which of the following are associated with movement across the cell membrane.

• diffusion and osmosis only

• active transport only

• facilitated diffusion only

• diffusion, osmosis, active transport, facilitated diffusion

Perfume smell moving across a room is a type of __________________.

• osmosis

• diffusion 

• facilitated diffusion

• none of these answers

What type of transport is this?

• Diffusion

• Osmosis

• Facilitated Diffusion

• Active Transport

During diffusion the movement of substance __________

• moves from high to low concentration

• moves when energy is used

• move across a cell membrane

• moves from low to high concentration

Which way will the water molecules in the image move during osmosis? (the mouse head is representing a molecule of water)

• Out of the cell, so the cell shrinks.

• Out of the cell, so the cell swells.

• Into the cell, so the cell shrinks.

• Into the cell, so the cell swells

What type of transport is shown in the image?

• Active transport because particles are moving from high concentration to low concentration

• Active transport because particles are moving from low concentration to high concentration

• Passive transport because particles are moving from high concentration to low concentration

• Passive transport because particles are moving from low concentration to high concentration

What a cell membrane is because it allows only certain substances to enter and leave a cell

• permanent

• plasma

• semipermeable

• flex wall

Tags

NGSS.MS-LS1-2