Cell Transport and Homeostasis

The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Because other substances are blocked from entering, this membrane is called

• Perforated

• Semi-permeable

• Non-conductive

• Permeable

Tags

NGSS.MS-LS1-2

Which is an example of osmosis?

• potassium ions moving in and out of an animal cell

• carbon dioxide moving into the leaf of a plant cell

• oxygen moving into the bloodstream from the lungs

• water moving into the root cells of a plant

In humans, glucose is kept in balance in the bloodstream by insulin. Which concept does this best illustrate?

• adaptation

• homeostasis

• metabolism

• organization

Many bacteria live in freshwater. Which of these statements best describes what will happen when freshwater bacterial cells are placed in salt water?

• Water leaves the cell, causing the cell to expand

• Water leaves the cell, causing the cell to shrink

• Water enters the cell, causing the cell to expand

• Water enters the cell, causing the cell to shrink

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

The cell membrane, or plasma membrane, is made up of a lipid bilayer in which hydrophilic heads face outward and hydrophobic tails face inward.
This arrangement within the cell membrane allows it to 

• fuse with ribosomes during DNA replication.
• absorb water from the cytoplasm whenever necessary.
• keep out all viral and bacterial infections.
• control the movement of substances in and out of the cell.

Tags

NGSS.MS-LS1-2

What type of transport is occurring in part A of the diagram?

• Facilitated Diffusion
• Osmosis
• Active Transport
• Diffusion

What type of transport is occurring in part B of the diagram?

• Osmosis
• Diffusion
• Facilitated Diffusion
• Active Transport

Tags

NGSS.HS-LS2-3

What type of transport is occurring in part C of the diagram?

• Passive Transport
• Osmosis
• Active Transport
• Facilitated Diffusion

Movement of particles from high to low concentration.

• Passive Transport

• Active Transport

• Endocytosis

• Exocytosis

Active Transport is a process where molecules move against the concentration gradient (up hill)

• True

• False