Bio Vocab Unit 4

Front

What is the movement of substances against their concentration gradient, requiring energy?

Back

Active transport

Front

What is a solution that has equal solute concentration compared to another solution?

Back

Isotonic solution

Front

What is the scientific definition of osmosis?

Back

Osmosis is the movement of water across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.

Front

What is the scientific definition of passive transport?

Back

The movement across a cell membrane without the use of energy.

Front

What are molecules composed of two fatty acids, a glycerol backbone, and a phosphate group, forming a hydrophilic head and hydrophobic tails?

Back

Phospholipids

Front

What is the primary function of active transport in cells?

Back

To move substances against their concentration gradient, which is essential for maintaining cellular homeostasis.

Tags

NGSS.HS-LS1-3

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What role do phospholipids play in cell membranes?

Back

They form the bilayer structure of cell membranes, providing a barrier that separates the interior of the cell from the external environment.

Front

What is a hypertonic solution?

Back

A solution that has a higher solute concentration compared to another solution, causing cells to lose water.

Front

What is a hypotonic solution?

Back

A solution that has a lower solute concentration compared to another solution, causing cells to gain water.