IB Biology - Topic 1.3

Front

Hydrophilic means...

Back

water-loving

Front

Which of the following is NOT part of the cell membrane?

Back

Nucleic Acids

Front

A phospholipid has 2 parts. What are they called?

Back

Hydrophilic Head, Hydrophobic Tail

Front

What is embedded in the phospholipid bilayer?

Back

proteins

Front

Which letter indicates an integral protein?

Back

I

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

Define phospholipid.

Back

A molecule that is a major component of cell membranes, consisting of a hydrophilic head and two hydrophobic tails.

Front

What role do proteins play in the cell membrane?

Back

They assist in transport, act as receptors, and provide structural support.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of cell membranes as a mosaic of various proteins that float in or on the fluid lipid bilayer.

Front

What is the difference between integral and peripheral proteins?

Back

Integral proteins span the membrane, while peripheral proteins are attached to the exterior or interior surfaces.