Cell Structure and Transport Review

Imagine you're a tiny adventurer, exploring the vast world of a living cell! Can you tell me what the role of the cell membrane is, in ALL living organisms?

• It's like a sturdy wall, providing support and structure in the cell.

• It's a busy factory, synthesizing protein for ATP for the cell.

• It's a storage unit, holding raw materials (food) and ATP for the cell. 

• It's the gatekeeper, regulating the transport of materials into and out of the cell. 

Tags

NGSS.MS-LS1-2

Imagine you're a tiny molecule in a crowded room. Which way would you move using simple diffusion?

• From areas of high concentration to areas of low concentration

• From areas of low concentration to areas of high concentration

• I wouldn't move, I don't like concentrations

• I'd move to both high and low concentrations, I'm a social molecule

Tags

NGSS.MS-PS1-5

Imagine you're a tiny person living inside a cell. What would you use vesicles for?

• Would you use them to deliver packaged materials for protein synthesis in the Golgi?

• Would you use them to exchange genetic information with the nucleus?

• Would you use them to get rid of waste from the cytoplasm?

• Or would you use them to pack materials for transport out of the cell through the plasma membrane?

Tags

NGSS.MS-LS1-2

Imagine you're a tiny person standing on a blood cell on the left. Suddenly, you notice it's shrinking! Can you guess why?

• The blood cell is throwing a salt party and all the salt is leaving to join the fun outside!

• The blood cell is crying salty tears, and all the water is leaving to comfort the salt outside!

• The blood cell is hosting a salt party and all the water is rushing in to join the fun!

• The blood cell is crying and all the salt is rushing in to comfort the water inside!

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-1

Diffusion is the net​ (a)   of ​ (b)   ​ from a region of ​ (c)   concentration to a region of ​ (d)   concentration.

• movement

• particles

• higher

• lower

• water

​ ​ (a)   does NOT require energy.

• passive transport

• active transport

• endocystosis

• exocytocisi

Which part of the cell is often called "the brain of the cell"?

• nuclear membrane

• endoplasmic reticulum

• nucleus

• mitochondria

Tags

NGSS.MS-LS1-2

Examples of this would be diffusion, (41)​ (a)   (the diffusion of water), and facilitated diffusion. Active transport requires the use of energy because it is the movement of molecules from a (42)​ (b)   to (43)​ (c)   concentration (or (44)​ (d)   the concentration gradient).

• Osmosis

• Active Transport

• endocytosis

• exocytosis

• low

• high

• against

Answer explanation

Osmosis is the correct choice as it refers to the diffusion of water. 'Low' and 'high' are accurate for the blanks 39 and 40 respectively, indicating movement against the concentration gradient.

Diffusion is the movement of molecules from a ​ (a)   concentration to a ​ (b)   concentration until both sides are ​ (c)   .

• higher

• lower

• equal

Match the following

• the movement of water across a cell membrane

• osmosis

• uses a channel protein to move large molecules across a membrane

• facilitated diffusion

• requires energy, moves from low to high concentration

• active transport

• does not require energy, moves from high to low concentration

• Passive transport