Unit 7 - Homeostasis Review

Front

What is the structure of the cell membrane?

Back

The cell membrane is primarily composed of a phospholipid bilayer, which includes fatty acid tails and phosphate heads, along with proteins and carbohydrate chains.

Front

What is the function of the phospholipid bilayer?

Back

The phospholipid bilayer serves as a barrier that regulates the movement of substances in and out of the cell, maintaining homeostasis.

Front

What are fatty acid tails?

Back

Fatty acid tails are hydrophobic (water-repelling) parts of phospholipids that face inward in the cell membrane, away from water.

Front

What are phosphate heads?

Back

Phosphate heads are hydrophilic (water-attracting) parts of phospholipids that face outward towards the water inside and outside the cell.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.

Front

What is a carbohydrate chain in the context of the cell membrane?

Back

Carbohydrate chains are attached to proteins and lipids on the extracellular surface of the cell membrane, playing a role in cell recognition and signaling.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solution, such as salt in water.

Front

What is a solvent?

Back

A solvent is a substance that dissolves a solute, commonly water, which is known as the universal solvent.

Front

What is a solution?

Back

A solution is a homogeneous mixture of a solute and a solvent.

Front

What is concentration in a solution?

Back

Concentration refers to the amount of solute present in a given volume of solvent or solution.