Unit 5 Cells Flashcard

Front

What is a characteristic of the cell membrane?

Back

It is selectively permeable.

Front

What is the main function of the ribosome?

Back

Protein synthesis.

Front

What is diffusion?

Back

The movement of molecules down a concentration gradient.

Front

How many phospholipid layers does the cell membrane consist of?

Back

2.

Front

Define selectively permeable.

Back

A property of cell membranes that allows certain molecules to pass through while blocking others.

Front

What is the role of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

What is the process of osmosis?

Back

The movement of water molecules through a semipermeable membrane.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against a concentration gradient, while passive transport does not.

Front

What are ribosomes made of?

Back

Ribosomal RNA (rRNA) and proteins.

Front

What is the function of the nucleus?

Back

To store genetic information and coordinate cell activities.