Cells, Viruses, Organelles, and Tissues

Front

What is the smallest unit of life?

Back

Cell

Front

What is active transport?

Back

A process that requires energy to move molecules against their concentration gradient.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What are ribosomes?

Back

Cellular structures that synthesize proteins by translating messenger RNA.

Front

What is facilitated diffusion?

Back

A process that allows molecules to cross the cell membrane with the assistance of special proteins, without using energy.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is cell specialization?

Back

The process by which cells develop different structures and functions to perform specific tasks in multicellular organisms.

Front

What is a prokaryotic cell?

Back

A type of cell that lacks a nucleus and membrane-bound organelles, such as bacteria.

Front

What is a eukaryotic cell?

Back

A type of cell that has a nucleus and membrane-bound organelles, such as plant and animal cells.

Front

What is the function of the cell membrane?

Back

To protect the cell and regulate what enters and exits the cell.