Discover how animal cells function as the fundamental building blocks...
Biology76 views·Updated 23 Aug 2026·2 pagesUnderstanding Animal Cells: Structures and Functions
Sarah Nasseur@sarahnasseur.o_o
1
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Animal Cell Structure
Animal cells have a basic structure that enables them to perform all necessary life functions. When viewing animal cells, scientists use both light microscopes for basic observation and transmission electron microscopes for more detailed examination.
The key structures visible in an animal cell include the nucleus (which controls cell activities), the cytoplasm (a jelly-like substance where chemical reactions occur), and the cell membrane (which regulates what enters and exits the cell). Mitochondria, sometimes visible under a light microscope but better seen with an electron microscope, are vital structures where energy is released during respiration.
Ribosomes are tiny structures that can only be seen using an electron microscope. These minuscule cellular components are essential for protein synthesis, creating the proteins needed for cell functions.
Did you know? Animal cells depend entirely on plants as their ultimate energy source. All the energy in your body originally came from photosynthesis in plants!
2
of 2
Comparing Animal and Plant Cells
Animal and plant cells share several common structures, but plant cells have additional specialised parts. Both contain a nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes, each with specific functions essential for survival.
The nucleus contains DNA which carries the genetic code for making enzymes and proteins needed for vital chemical reactions. The cell membrane controls what enters and exits the cell, while mitochondria contain enzymes for aerobic respiration, releasing energy from food. Ribosomes are small structures where amino acids join together to create proteins.
Plant cells differ from animal cells with three additional structures. Chloroplasts contain chlorophyll for photosynthesis, the cell wall provides strength and support, and a large permanent vacuole filled with cell sap helps maintain cell structure. Animal cells may have vacuoles too, but these are typically smaller and temporary, mainly used for storage or transport.
Quick tip: Remember the three extra features in plant cells with the acronym CWV: Chloroplasts, Wall, and Vacuole!
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Biology76 views·Updated 23 Aug 2026·2 pagesUnderstanding Animal Cells: Structures and Functions
Sarah Nasseur@sarahnasseur.o_o
Discover how animal cells function as the fundamental building blocks of life. These microscopic structures contain specialised parts that work together, allowing animals to carry out essential life processes using energy derived from plants.
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Animal Cell Structure
Animal cells have a basic structure that enables them to perform all necessary life functions. When viewing animal cells, scientists use both light microscopes for basic observation and transmission electron microscopes for more detailed examination.
The key structures visible in an animal cell include the nucleus (which controls cell activities), the cytoplasm (a jelly-like substance where chemical reactions occur), and the cell membrane (which regulates what enters and exits the cell). Mitochondria, sometimes visible under a light microscope but better seen with an electron microscope, are vital structures where energy is released during respiration.
Ribosomes are tiny structures that can only be seen using an electron microscope. These minuscule cellular components are essential for protein synthesis, creating the proteins needed for cell functions.
Did you know? Animal cells depend entirely on plants as their ultimate energy source. All the energy in your body originally came from photosynthesis in plants!
2
of 2Sign up to see the content. It's free!
- Access to all documents
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Comparing Animal and Plant Cells
Animal and plant cells share several common structures, but plant cells have additional specialised parts. Both contain a nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes, each with specific functions essential for survival.
The nucleus contains DNA which carries the genetic code for making enzymes and proteins needed for vital chemical reactions. The cell membrane controls what enters and exits the cell, while mitochondria contain enzymes for aerobic respiration, releasing energy from food. Ribosomes are small structures where amino acids join together to create proteins.
Plant cells differ from animal cells with three additional structures. Chloroplasts contain chlorophyll for photosynthesis, the cell wall provides strength and support, and a large permanent vacuole filled with cell sap helps maintain cell structure. Animal cells may have vacuoles too, but these are typically smaller and temporary, mainly used for storage or transport.
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