Animal Cell Quiz

Cell Basics

• Cells are the fundamental units of life, serving as the building blocks for all organisms.
• Organisms are classified as living entities, which can be unicellular (single-celled) or multicellular (composed of multiple cells).

Cell Theory

• All living organisms consist of one or more cells.
• Cells are recognized as the basic unit of structure and function in all organisms.
• New cells are produced from existing cells, emphasizing cellular reproduction.

Prokaryotic vs. Eukaryotic Cells

• Prokaryotic cells: single-celled organisms lacking a nucleus and membrane-bound organelles; DNA resides in the cytoplasm, often utilizing flagella for movement.
• Eukaryotic cells: organisms composed of cells with a defined nucleus and membrane-bound organelles, containing DNA within the nucleus.

Animal Cell Organelles and Functions

• Cell membrane: a protective outer layer that regulates the movement of substances in and out of the cell, primarily composed of proteins and lipids.
  • Controls cellular permeability through mechanisms such as diffusion and osmosis, which is a specific type of cellular diffusion for water movement.

Cell Basics

• Cells represent the fundamental unit of structure and function in living organisms.
• Organisms can be classified as unicellular (single-celled) or multicellular (composed of multiple cells).
• Organelles are specialized structures within cells, each serving a distinct function.

Cell Theory

• Every living organism consists of one or more cells.
• Cells are the fundamental units of life in all organisms.
• New cells arise only from the division of existing cells.

Prokaryotic vs. Eukaryotic Cells

• Prokaryotic cells are generally unicellular, lack a nucleus, and do not have membrane-bound organelles; they contain DNA located in the cytoplasm and often move via flagella.
• Eukaryotic cells can be either unicellular or multicellular, possess a nucleus that houses their DNA, and consist of various membrane-bound organelles.

Animal Cell Organelles and Their Functions

• The cell membrane surrounds the cell, acting as a barrier that regulates the entry and exit of substances; consists of proteins and lipids.
• Diffusion refers to the movement of molecules from high to low concentration; osmosis is a specific type of diffusion involving water across the cell membrane.