Which of the following structures is found in plant cells but not in animal cells?
Nucleus
Mitochondria
Cell Wall
Ribosomes
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Plant vs Animal cell
Both plant and animal cells share some key features: a flexible outer layer known as the plasma membrane, a jelly-like substance called cytoplasm, a control center named the nucleus, tiny protein builders called ribosomes, energy-generating mitochondria, and cleanup crew peroxisomes. Despite these similarities, plant and animal cells also have some distinct differences that set them apart. Animal cells are equipped with a special pair of structures called centrioles, nestled within a region known as the centrosome, helping them organize their internal scaffolding. They also boast tiny recycling centers called lysosomes. Plant cells, on the other hand, stand out with their sturdy cell walls, sunlight-harvesting chloroplasts, and a spacious storage unit termed the central vacuole. These differences are not just fascinating details but are essential for the unique ways in which plant and animal cells live, grow, and interact with their environments.
How do plant and animal cells differ?
- Mitochondria Presence: Both plant and animal cells contain mitochondria, crucial for energy production.
- Chloroplasts Exclusive to Plants: Only plant cells possess chloroplasts for photosynthesis, converting sunlight into glucose, eliminating the need for external food sources.
- Vacuole Variations: Plant cells feature a single, large vacuole for storage and structure, whereas animal cells have multiple, smaller vacuoles with diverse functions.
- Cell Wall in Plants: Plant cells are unique with a rigid cell wall outside the cell membrane, providing extra support and a characteristic shape, unlike the flexible cell membrane in animal cells.
Differences Between Plant Cell and Animal Cell
| Feature | Plant Cell | Animal Cell |
|---|---|---|
| Mitochondria | Present, converts sugar into energy | Present, converts sugar into energy |
| Chloroplasts | Present, performs photosynthesis to produce glucose | Absent, do not perform photosynthesis |
| Vacuoles | One large central vacuole for storage and structure | Multiple small vacuoles with varied functions |
| Cell Wall | Present, provides extra support and shape | Absent, only has a flexible cell membrane |
| Shape | Typically rectangular due to the rigid cell wall | Various shapes, more flexible due to lack of cell wall |
| Energy Source | Can produce its own food through photosynthesis | Relies on external food sources for energy |
| Centrioles/Centrosome | Absent, plant cells do not have centrioles | Present, involved in cell division and the formation of spindle fibers |
| Lysosomes | Rarely present, plant cells have other ways to deal with waste | Commonly present, involved in digestion and waste removal |
| Plastids | Present, involved in storage and pigments in addition to chloroplasts | Absent, do not have plastids |
| Permeability | Cell wall allows for a high degree of rigidity and less permeability | Cell membrane offers more permeability and flexibility |
| Cytoskeleton | Less prominent due to the rigid cell wall structure | More prominent, providing structural support in the absence of a cell wall |
| Photosynthesis | Capable of photosynthesis through chloroplasts | Incapable of photosynthesis |
| Storage | Large central vacuole primarily for storage of water and nutrients | Smaller vacuoles, with some serving as temporary storage |
| Growth | Growth mainly through enlarging the central vacuole, leading to cell enlargement | Growth through cell division |
Key Similarities between Plant and Animal cells
- Plant and animal cells share a lot in common, showing how they both belong to the world of complex living things called eukaryotes:
- Nucleus: Both plant and animal cells have a nucleus, like a command center that holds their DNA and directs all the cell’s activities.
- Mitochondria: These are the cell’s power plants, turning food into energy in both plant and animal cells.
- Cell Membrane: This thin layer wraps around both types of cells, acting like a gatekeeper to control what gets in and out.
- Endoplasmic Reticulum and Golgi Apparatus: These parts work as the cell’s factory and shipping department, making and sending out proteins and fats.
- Ribosomes: Tiny machines called ribosomes are in both cells too, reading genetic blueprints to build proteins needed for the cell to work.
- Cytoskeleton: This is like a skeleton inside both plant and animal cells, giving them shape and helping them move and divide.
Conclusion
we’ve seen that both plant and animal cells share a common set of building blocks, including tiny structures like the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and in some cases, lysosomes. But there’s also a size difference to note: while animal cells typically measure between 10 and 30 micrometers, plant cells can be a bit roomier, stretching from 10 to 100 micrometers. This size variation, along with the unique features of each, highlights the fascinating diversity and specialization within the cell world.
FAQ’S
What are the 5 differences between plant and animal cells?
Plant cells have cell walls, chloroplasts, large vacuoles, fixed shape, and store starch. Animal cells lack these features, have varied shapes, and store glycogen.
What can plants do that animals cannot?
Plants can photosynthesize, converting sunlight into energy, a capability animals do not possess.
What are 10 similarities between plant and animal cells?
Both cell types have nuclei, cytoplasm, mitochondria, Golgi apparatus, endoplasmic reticulum, ribosomes, cell membranes, DNA, cytoskeletons, and lysosomes.
Why do animal cells not have a cell wall?
Animal cells lack a cell wall to enable flexibility and diverse cell shapes, vital for complex movements and functions.
What do plant cells have that animal cells do not?
Plant cells uniquely possess cell walls, chloroplasts for photosynthesis, and large central vacuoles for storage and support.
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Practice Test
Chloroplasts are found in:
Animal cells only
Plant cells only
Both plant and animal cells
Neither plant nor animal cells
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Which of the following is a function of the large central vacuole in plant cells?
Protein synthesis
DNA storage
Storage of water and nutrients
Energy production
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The presence of which organelle helps in differentiating plant cells from animal cells under a microscope?
Lysosome
Mitochondrion
Chloroplast
Golgi apparatus
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Which cell organelle is responsible for producing energy in both plant and animal cells?
Nucleus
Chloroplast
Mitochondrion
Ribosome
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Plant cells maintain their shape primarily through:
Cell membrane
Cytoskeleton
Cell wall and central vacuole
Nucleus
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Which of the following organelles is involved in the synthesis of lipids in both plant and animal cells?
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Golgi Apparatus
Ribosomes
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What is the primary function of lysosomes in animal cells?
Photosynthesis
Protein synthesis
Digestion of cellular waste
Energy production
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Which structure is responsible for controlling the activities of the cell in both plant and animal cells?
Mitochondria
Nucleus
Golgi apparatus
Endoplasmic reticulum
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Which of the following is not a common feature of both plant and animal cells?
Plasma membrane
Mitochondria
Ribosomes
Centrioles
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