04 cell specialization
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Cell structure is directly related to its function, with size, shape, special structures and organelles determining what each cell can do. Undifferentiated stem cells can become any specialized cell type through differentiation. Stem cells differentiate into other cell types with specific structures tailored to their function.
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Chapter 7 3
This document provides information about the structures and organelles found within eukaryotic cells. It discusses the cytoplasm, cytoskeleton, and various organelles such as the cell wall, chloroplasts, mitochondria, Golgi apparatus, lysosomes, nucleus, and vacuoles. The key differences between plant and animal cells are outlined, such as plant cells having a cell wall and large central vacuole while animal cells are generally smaller and lack a cell wall.
2 03 Presentation
This document summarizes the roles of various cell organelles by presenting them as workers in a cell factory. It describes the cell membrane as the protector that decides what enters and leaves the cell. It identifies the nucleus as containing the cell's genetic information. It notes that the cytoplasm and cytoskeleton give the cell its shape and contain the materials to run the cell's functions, with certain cytoskeleton workers maintaining specialized roles. It also summarizes the roles of ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria, and vacuoles in producing and transporting proteins and other molecules throughout the cell.
1.1 Cell Theory, Cell Specialization, and Cell Replacement
All living things are composed of cells, which are the basic units of structure and function. Multicellular organisms develop specialized tissues through cell differentiation, where cells express different genes to take on specialized roles. Stem cells are unique in their ability to differentiate into many cell types, making them promising for regenerative medicine. Their therapeutic use raises ethical issues that must be considered.
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Cell structure revised
- All living things are composed of cells, which are the basic units of structure and function. The cell theory states that cells come from pre-existing cells through cell division.
- Cells can be prokaryotic, lacking organelles and a nucleus, or eukaryotic, containing organelles and a nucleus. Eukaryotic cells include plant, animal, fungus and protist cells.
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Cell Organelles
The document summarizes the structure and function of key cell organelles. It describes that plant, fungi, and algae cells have cell walls made of cellulose that provide support. All cells have a cell membrane that acts as a protective barrier and encloses the cell. The cytoskeleton is a network of proteins that helps cells move and maintain their shape. The nucleus contains DNA and is the control center of the cell. Ribosomes produce proteins and are found attached to the rough endoplasmic reticulum. Mitochondria and chloroplasts generate energy and sugars through cellular respiration and photosynthesis respectively.
Powerpoint specialization of cells
Cells specialize to form tissues that group together to perform shared functions. Tissues then combine to form organs which work together in organ systems to carry out body functions. For example, the stomach organ contains muscle tissue made up of individual muscle cells, and is part of the digestive system organ system.
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