2021.04.14 - Quiz: Cellular and Organism Homeostasis

Why do multi-cellular organisms need transport systems?

• most have cells that are not able to exchange gases with the outside environment

• most have cells that are unable to grow and survive in their environment

• most have cells that need food from sources outside their environment

• most have cells that require more energy to survive than single celled organisms

Homeostasis is the process of keeping the proper conditions inside the body, no matter what is happening outside the body. Which body system maintains homeostasis by coordinating the actions of the other systems?

• excretory system

• nervous system

• circulatory system

• musculoskeletal system

Which best defines homeostasis?

• modifying the external environment

• maintaining a stable internal environment

• controlling what enters and exits the cell

• movement of materials into the cell

Which term refers to a solution with more of the same kind of molecules outside the cell than inside the cell?

• Hypertonic

• Hypotonic

• Equitonic

• Isotonic

Which homeostatic process requires energy to move particles across the plasma or cell membrane?

• Active Transport

• Passive Transport

• Dynamic Equilibrium

• Osmosis

Which homeostatic process moves particles against a concentration gradient?

• Dynamic Equilibrium

• Passive Transport

• Osmosis

• Active Transport

In which kind of solution is the concentration of solutes the same inside and outside of the cell?

• Isotonic

• Hypertonic

• Hypotonic

• Concentrated

Which process is characterized by the movement of particles from an area of high concentration to an area of low concentration across the plasma membrane without the use of energy?

• Hypertonic Transport

• Active Transport

• Passive Transport

• Dynamic Equilibrium

For diffusion to occur, which condition must be met?

• A concentration gradient must exist.

• A hypotonic external environment must exist.

• A hypertonic external environment must exist.

• Dynamic equilibrium must exist.

Which best describes the difference between osmosis and diffusion?

• Osmosis is the movement of particles from a high to a low particle concentration, while diffusion is the movement of water from a high to a low water concentration.

• Diffusion is the movement of particles from a high to low particle concentration, while osmosis is the movement of water from a high to a low water concentration.

• Diffusion is the movement of particles from a low to a high particle concentration, while osmosis is the movement of water from a low to a high water concentration.

• Osmosis is the movement of particles from a low to a high particle concentration, while diffusion is the movement of water from a low to a high water concentration.