Detailed illustration of a eukaryotic animal cell with labeled components.
Diagram of an animal cell showing organelles including nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and ribosomes.
JPG
760×509
91.8 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #507120
⭐
Show Answer Key & Explanations
Step-by-step solution for: Animal and Plant Cell Labeling
▼
Show Answer Key & Explanations
Step-by-step solution for: Animal and Plant Cell Labeling
The image provided is a labeled diagram of an animal cell. Below, I will identify and explain the function of each labeled part of the cell:
---
1. (1) Nucleus
- The nucleus is the control center of the cell. It contains the cell's DNA (genetic material) and is responsible for regulating gene expression and controlling cellular activities.
- The nucleus is surrounded by a double membrane called the nuclear envelope.
2. (2) Nuclear Envelope
- This is the double-layered membrane that surrounds the nucleus. It has pores (nuclear pores) that allow the passage of molecules like RNA and proteins between the nucleus and the cytoplasm.
3. (3) Nucleolus
- The nucleolus is a dense region within the nucleus where ribosomal RNA (rRNA) is synthesized and ribosomes are assembled.
4. (4) Rough Endoplasmic Reticulum (RER)
- The rough ER is studded with ribosomes on its outer surface. It is involved in protein synthesis and modification. Proteins made here are often destined for secretion or transport to other organelles.
5. (5) Smooth Endoplasmic Reticulum (SER)
- The smooth ER lacks ribosomes and is involved in lipid synthesis, detoxification of drugs and poisons, and calcium storage.
6. (6) Ribosome
- Ribosomes are small structures where protein synthesis occurs. They can be free-floating in the cytoplasm or attached to the rough ER.
7. (7) Golgi Apparatus
- The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other parts of the cell. It is often depicted as a stack of flattened sacs.
8. (8) Lysosome
- Lysosomes contain digestive enzymes that break down waste materials and cellular debris. They also play a role in intracellular digestion.
9. (9) Mitochondrion
- Mitochondria are the powerhouses of the cell. They produce energy in the form of ATP through cellular respiration. They have a double membrane structure, with the inner membrane folded into cristae.
10. (10) Peroxisome
- Peroxisomes are membrane-bound organelles that contain enzymes involved in breaking down fatty acids and detoxifying harmful substances like hydrogen peroxide.
11. (11) Cytoskeleton
- The cytoskeleton is a network of protein filaments (microtubules, microfilaments, and intermediate filaments) that provides structural support, maintains cell shape, and facilitates movement of organelles within the cell.
12. (12) Centriole
- Centrioles are cylindrical structures composed of microtubules. They are involved in organizing the mitotic spindle during cell division (mitosis).
13. (13) Intermediate Filament
- These are part of the cytoskeleton and provide mechanical strength to the cell. They help maintain the cell's shape and anchor organelles in place.
14. (14) Microfilament
- Microfilaments are thin, fibrous proteins (actin) that form part of the cytoskeleton. They are involved in muscle contraction, cell division, and cell movement.
15. (15) Plasma Membrane
- The plasma membrane is the boundary of the cell. It regulates the movement of substances in and out of the cell and maintains the internal environment of the cell.
---
- Nucleus: Control center containing DNA.
- Endoplasmic Reticulum: Protein synthesis and lipid production.
- Golgi Apparatus: Protein modification and packaging.
- Mitochondrion: Energy production (ATP).
- Lysosome: Digestion of waste and cellular debris.
- Cytoskeleton: Structural support and movement.
- Plasma Membrane: Regulates substance exchange.
This diagram represents the key components of an animal cell and their respective functions. If you have any specific questions about any part of the diagram, feel free to ask!
---
Key Features of the Animal Cell Diagram:
1. (1) Nucleus
- The nucleus is the control center of the cell. It contains the cell's DNA (genetic material) and is responsible for regulating gene expression and controlling cellular activities.
- The nucleus is surrounded by a double membrane called the nuclear envelope.
2. (2) Nuclear Envelope
- This is the double-layered membrane that surrounds the nucleus. It has pores (nuclear pores) that allow the passage of molecules like RNA and proteins between the nucleus and the cytoplasm.
3. (3) Nucleolus
- The nucleolus is a dense region within the nucleus where ribosomal RNA (rRNA) is synthesized and ribosomes are assembled.
4. (4) Rough Endoplasmic Reticulum (RER)
- The rough ER is studded with ribosomes on its outer surface. It is involved in protein synthesis and modification. Proteins made here are often destined for secretion or transport to other organelles.
5. (5) Smooth Endoplasmic Reticulum (SER)
- The smooth ER lacks ribosomes and is involved in lipid synthesis, detoxification of drugs and poisons, and calcium storage.
6. (6) Ribosome
- Ribosomes are small structures where protein synthesis occurs. They can be free-floating in the cytoplasm or attached to the rough ER.
7. (7) Golgi Apparatus
- The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other parts of the cell. It is often depicted as a stack of flattened sacs.
8. (8) Lysosome
- Lysosomes contain digestive enzymes that break down waste materials and cellular debris. They also play a role in intracellular digestion.
9. (9) Mitochondrion
- Mitochondria are the powerhouses of the cell. They produce energy in the form of ATP through cellular respiration. They have a double membrane structure, with the inner membrane folded into cristae.
10. (10) Peroxisome
- Peroxisomes are membrane-bound organelles that contain enzymes involved in breaking down fatty acids and detoxifying harmful substances like hydrogen peroxide.
11. (11) Cytoskeleton
- The cytoskeleton is a network of protein filaments (microtubules, microfilaments, and intermediate filaments) that provides structural support, maintains cell shape, and facilitates movement of organelles within the cell.
12. (12) Centriole
- Centrioles are cylindrical structures composed of microtubules. They are involved in organizing the mitotic spindle during cell division (mitosis).
13. (13) Intermediate Filament
- These are part of the cytoskeleton and provide mechanical strength to the cell. They help maintain the cell's shape and anchor organelles in place.
14. (14) Microfilament
- Microfilaments are thin, fibrous proteins (actin) that form part of the cytoskeleton. They are involved in muscle contraction, cell division, and cell movement.
15. (15) Plasma Membrane
- The plasma membrane is the boundary of the cell. It regulates the movement of substances in and out of the cell and maintains the internal environment of the cell.
---
Summary of Functions:
- Nucleus: Control center containing DNA.
- Endoplasmic Reticulum: Protein synthesis and lipid production.
- Golgi Apparatus: Protein modification and packaging.
- Mitochondrion: Energy production (ATP).
- Lysosome: Digestion of waste and cellular debris.
- Cytoskeleton: Structural support and movement.
- Plasma Membrane: Regulates substance exchange.
This diagram represents the key components of an animal cell and their respective functions. If you have any specific questions about any part of the diagram, feel free to ask!
Parent Tip: Review the logic above to help your child master the concept of cell labeling worksheet answers.
