Unit 2, Concept 2: Cell Transport

What is the purpose of cell transport in the context of homeostasis?

• To maintain stability of the organism by regulating internal conditions

• To increase the fluctuation of internal conditions

• To prevent the organism from responding to stimuli

• To cause instability in the organism

Tags

NGSS.HS-LS1-3

What is the term used to describe the need of an organism to stay stable by regulating its internal conditions?

• Dynamic equilibrium

• Static stability

• Fluctuating homeostasis

• Unstable regulation

Tags

NGSS.HS-LS1-3

What is an example of a positive feedback mechanism in the human body?

• Childbirth

• Fruit ripening

• Blood sugar regulation

• Water concentration regulation

Tags

NGSS.HS-LS1-3

Which type of transport requires no extra energy by the cell and allows molecules to move down their concentration gradient?

• Molecular pumps

• Osmosis

• Facilitated diffusion

• Simple diffusion

What is the process called when a cell uses vesicles to move large particles into the cell?

• Active transport

• Endocytosis

• Exocytosis

• Passive transport

Which type of solution causes a cell to shrink due to water rushing out of the cell?

• None of the above

• Hypertonic solution

• Hypotonic solution

• Isotonic solution

What type of molecules can easily pass through the cell membrane?

• Neutral molecules

• Hydrophilic molecules

• Small nonpolar molecules

• Polar and large molecules

What is the purpose of molecular pumps in the cell?

• To maintain isotonic solutions

• To concentrate certain molecules within the cell or outside the cell

• To facilitate the diffusion of molecules

• To regulate blood sugar levels

Tags

NGSS.HS-LS1-3

What is the term used to describe the uniform mixture of solute and solvent?

• Concentration

• Solution

• Solute

• Solvent

Which type of transport requires using vesicles to export things out of the cells?

• Facilitated diffusion

• Endocytosis

• Exocytosis

• Simple diffusion