Unit Test - Cellular Transport

The above diagram shows the process of osmosis. Only the water molecules could enter the cell because water molecules -

• have more energy than the protein molecules

• are smaller than the protein molecules

• are more numerous than the protein molecules

• contain more hydrogen atoms than the protein

Tags

NGSS.MS-LS1-2

Which is an important function of the cell structure in this model?

• Controlling passage of materials

• Packaging cell products for export

• Transferring hereditary materials to offspring

• preventing a cell from bursting due to osmosis

Tags

NGSS.MS-LS1-2

The main reason that eating salty foods makes a person thirsty is that additional fluid is needed to -

• Increase the salinity of the blood

• dissolve salt crystals in the stomach

• maintain the fluid balance in the cells

• prevent damage to the lining of the throat

Tags

NGSS.HS-LS1-3

A student was studying the responses of cells to solutions of varying salt concentrations. Which solution below would cause no change in cell size?

• 
• 
• 
• 

If energy is needed to move materials into or out of a cell, what is the most likely occurring?

• active transport

• passive transport

• osmosis

• diffusion

Which is an example of osmosis?

• Potassium ions moving in and out of an animal cell

• Carbon dioxide moving into the leaf cells of a plant

• Oxygen moving into the bloodstream from the lungs

• Water moving into the roots cells of a plant

To enter and leave the cell, sodium requires an energy-intensive pump. Which describes the process of sodium moving into and out of the cell?

• osmosis

• diffusion

• Active transport

• Passive transport

The diagram shows a section of cell membrane that includes a channel protein. The function of this protein is to –

• strengthen the outer boundary of the cell

• connect reproductive cells during fertilization

• allow certain substances to enter or leave the cell

• exchange organelles or chromosomes between specialized cells

What is the key difference between osmosis and diffusion?

• Diffusion specifically refers to the movement of water across the cell membrane.

• Osmosis specifically refers to the movement of water across the cell membrane.

• Diffusion occurs only in plants.

• Osmosis occurs only in plants

The series of diagram represents a process carried out by a unicellular organism.

This process is known as

• Autotrophic nutrition

• replication

• sporulation

• phagocytosis (endocytosis)

Tags

NGSS.MS-LS3-2