Biology Cells Review

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins, without the use of energy.

Front

What distinguishes eukaryotic cells from prokaryotic cells?

Back

Eukaryotic cells have a nucleus and membrane-bound organelles, while prokaryotic cells do not.

Front

What is the role of the nucleus in eukaryotic cells?

Back

The nucleus contains DNA and directs the cell's activities.

Front

What are membrane-bound organelles?

Back

Membrane-bound organelles are specialized structures within eukaryotic cells that are enclosed by membranes, such as the nucleus, mitochondria, and endoplasmic reticulum.

Front

What is cytokinesis?

Back

Cytokinesis is the process during cell division where the cytoplasm of a parental cell is divided into two daughter cells.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What are the main components of a cell membrane?

Back

The main components of a cell membrane are phospholipids, proteins, cholesterol, and carbohydrates.

Front

What is the function of ribosomes?

Back

Ribosomes are responsible for protein synthesis in the cell.

Front

What is the significance of the cell theory?

Back

The cell theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells.

Front

What is the function of mitochondria?

Back

Mitochondria are known as the powerhouse of the cell, as they generate ATP through cellular respiration.