Homeostasis Review

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the role of the cell membrane in homeostasis?

Back

The cell membrane regulates the movement of substances in and out of the cell, helping to maintain homeostasis.

Front

Define active transport.

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy (ATP).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins, without the use of energy, moving from high to low concentration.

Front

What does hydrophobic mean?

Back

Hydrophobic refers to substances that do not interact well with water; they are 'water-fearing'.

Front

What does hydrophilic mean?

Back

Hydrophilic refers to substances that interact well with water; they are 'water-loving'.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, a cell will lose water and shrink due to osmosis.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the difference between a population and a community?

Back

A population is a group of individuals of the same species living in a specific area, while a community is made up of different populations of various species in a given area.

Front

What is ATP and its role in cellular processes?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes.