Cell Biology Basics

Front

What is the structure of a bacterial cell?

Back

Bacterial cells are prokaryotic, meaning they do not have a nucleus. They have a cell wall, plasma membrane, cytoplasm, ribosomes, and genetic material in a nucleoid.

Front

What is a eukaryotic cell?

Back

Eukaryotic cells have a true nucleus enclosed in a membrane, along with other membrane-bound organelles like mitochondria, endoplasmic reticulum, and Golgi apparatus.

Front

What is a prokaryotic cell?

Back

Prokaryotic cells lack a true nucleus and membrane-bound organelles. Their DNA is located in a nucleoid region.

Front

Define eukaryotic cell.

Back

A eukaryotic cell is a type of cell with a membrane-bound nucleus and organelles, found in organisms such as plants, animals, and fungi.

Front

Define prokaryotic cell.

Back

A prokaryotic cell is a simple, single-celled organism without a nucleus or other membrane-bound organelles, such as bacteria.

Front

Compare prokaryotic and eukaryotic cells.

Back

Prokaryotic cells are smaller, lack a nucleus, and have no membrane-bound organelles. Eukaryotic cells are larger, have a nucleus, and contain membrane-bound organelles.

Front

Estimate the size of subcellular structures.

Back

Subcellular structures vary in size: ribosomes are about 20-30 nm, mitochondria are 0.5-10 micrometers, and the nucleus is about 6 micrometers in diameter.