Cell Transport and Membranes

_______ regulates what enters and leaves a cell.  

• Cell Membrane

• Nucleus

• Mitochondria

• Cytoplasm

Tags

NGSS.MS-LS1-2

Which type of passive transport uses proteins to help molecules pass through the membrane?

• Diffusion

• Facilitated diffusion

• Osmosis

• All of the above

Cell membranes are described as selectively permeable. Four students were asked to explain what this means. Which one is correct?

• Student 1: Cell membranes prevent all materials from entering the cell.

• Student 2: Cell membranes only provide structural support for the cell.

• Student 3: Cell membranes regulate which substances can enter and exit the cell.

• Student 4: Cell membranes allow water and water-soluble substances to enter the cell.

Tags

NGSS.MS-LS1-2

The movement of water through a semi-permeable membrane is called ___________.

• active transport

• respiration

• osmosis

• diffusion

What is the difference between active and passive transport?

• Active does not need energy and passive uses ATP (energy)

• Active uses ATP (energy) and passive does not need energy

• Active stores transport proteins and passive releases 

• Active uses hormones and passive does not 

What is diffusion?

• The movement of particles from low conc. to high conc. in a given space

• The movement of particles from high conc. to low conc. in a given space

Which cell is placed into a hypotonic environment? 

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

 An animal cell placed in a hypertonic (salty) solution will

• Stay the same

• Shrink- get smaller

• Swell- get bigger

Moving from areas of LOW concentration to areas of HIGH concentration is called?

• Passive Transport

• Active Transport

• Diffusion

• Osmosis

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis

• Diffusion

• Homeostasis