Detailed illustration of an animal cell with labeled structures.
Diagram of an animal cell showing labeled parts including nucleus, mitochondria, endoplasmic reticulum, and other organelles.
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Step-by-step solution for: Animal Cell Structure
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Show Answer Key & Explanations
Step-by-step solution for: Animal Cell Structure
The image you've provided is a labeled diagram of a plant cell, and the task is likely to identify the structures labeled A through L. Let's go step by step to identify each part and explain its function.
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Here are the labels and their corresponding organelles:
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A – Nucleus
- The largest structure in the cell, containing the genetic material (DNA). It controls cell activities like growth, metabolism, and reproduction.
B – Nuclear Envelope (Nuclear Membrane)
- Double membrane surrounding the nucleus. It regulates the passage of materials between the nucleus and cytoplasm.
C – Chromatin (or Chromosomes)
- DNA and associated proteins inside the nucleus. During cell division, chromatin condenses into chromosomes.
D – Mitochondrion
- Site of cellular respiration. Produces ATP (energy) for the cell. Often called the "powerhouse" of the cell.
E – Golgi Apparatus (Golgi Body)
- Modifies, sorts, and packages proteins and lipids for transport to other parts of the cell or secretion outside.
F – Vacuole
- Large central vacuole in plant cells. Stores water, ions, nutrients, and waste products. Helps maintain turgor pressure (rigidity) in plant cells.
G – Chloroplast
- Site of photosynthesis. Contains chlorophyll (green pigment) that captures light energy to produce glucose from CO₂ and water.
H – Ribosome
- Small structures involved in protein synthesis. Can be free in the cytoplasm or attached to the rough endoplasmic reticulum.
I – Rough Endoplasmic Reticulum (RER)
- Network of membranes studded with ribosomes. Involved in protein synthesis and transport.
J – Smooth Endoplasmic Reticulum (SER)
- Lack ribosomes; involved in lipid synthesis, detoxification, and calcium storage.
K – Cell Wall
- Rigid outer layer made of cellulose that provides structural support and protection to the plant cell.
L – Cytoplasm
- Gel-like substance filling the cell. Contains organelles and is the site of many metabolic reactions.
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| Label | Structure | Function |
|-------|-------------------------|--------|
| A | Nucleus | Controls cell activity, stores DNA |
| B | Nuclear Envelope | Surrounds nucleus, regulates transport |
| C | Chromatin | DNA + proteins; genetic material |
| D | Mitochondrion | Energy production (ATP) |
| E | Golgi Apparatus | Processes and packages molecules |
| F | Vacuole | Storage, maintains turgor pressure |
| G | Chloroplast | Photosynthesis |
| H | Ribosome | Protein synthesis |
| I | Rough ER | Protein synthesis and transport |
| J | Smooth ER | Lipid synthesis, detoxification |
| K | Cell Wall | Structural support |
| L | Cytoplasm | Medium for organelles and reactions |
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- Cell wall (K) – present only in plants.
- Chloroplasts (G) – for photosynthesis.
- Large central vacuole (F) – helps maintain shape.
- No centrioles (not shown, but absent in most plant cells).
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If your task was to label the parts or identify functions, this breakdown should fully solve it. If there's a specific question (e.g., “Which structure produces energy?”), let me know — I can answer that too!
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🔬 Plant Cell Diagram – Label Identification
Here are the labels and their corresponding organelles:
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A – Nucleus
- The largest structure in the cell, containing the genetic material (DNA). It controls cell activities like growth, metabolism, and reproduction.
B – Nuclear Envelope (Nuclear Membrane)
- Double membrane surrounding the nucleus. It regulates the passage of materials between the nucleus and cytoplasm.
C – Chromatin (or Chromosomes)
- DNA and associated proteins inside the nucleus. During cell division, chromatin condenses into chromosomes.
D – Mitochondrion
- Site of cellular respiration. Produces ATP (energy) for the cell. Often called the "powerhouse" of the cell.
E – Golgi Apparatus (Golgi Body)
- Modifies, sorts, and packages proteins and lipids for transport to other parts of the cell or secretion outside.
F – Vacuole
- Large central vacuole in plant cells. Stores water, ions, nutrients, and waste products. Helps maintain turgor pressure (rigidity) in plant cells.
G – Chloroplast
- Site of photosynthesis. Contains chlorophyll (green pigment) that captures light energy to produce glucose from CO₂ and water.
H – Ribosome
- Small structures involved in protein synthesis. Can be free in the cytoplasm or attached to the rough endoplasmic reticulum.
I – Rough Endoplasmic Reticulum (RER)
- Network of membranes studded with ribosomes. Involved in protein synthesis and transport.
J – Smooth Endoplasmic Reticulum (SER)
- Lack ribosomes; involved in lipid synthesis, detoxification, and calcium storage.
K – Cell Wall
- Rigid outer layer made of cellulose that provides structural support and protection to the plant cell.
L – Cytoplasm
- Gel-like substance filling the cell. Contains organelles and is the site of many metabolic reactions.
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✔ Summary Table
| Label | Structure | Function |
|-------|-------------------------|--------|
| A | Nucleus | Controls cell activity, stores DNA |
| B | Nuclear Envelope | Surrounds nucleus, regulates transport |
| C | Chromatin | DNA + proteins; genetic material |
| D | Mitochondrion | Energy production (ATP) |
| E | Golgi Apparatus | Processes and packages molecules |
| F | Vacuole | Storage, maintains turgor pressure |
| G | Chloroplast | Photosynthesis |
| H | Ribosome | Protein synthesis |
| I | Rough ER | Protein synthesis and transport |
| J | Smooth ER | Lipid synthesis, detoxification |
| K | Cell Wall | Structural support |
| L | Cytoplasm | Medium for organelles and reactions |
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🌱 Key Features of Plant Cells:
- Cell wall (K) – present only in plants.
- Chloroplasts (G) – for photosynthesis.
- Large central vacuole (F) – helps maintain shape.
- No centrioles (not shown, but absent in most plant cells).
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If your task was to label the parts or identify functions, this breakdown should fully solve it. If there's a specific question (e.g., “Which structure produces energy?”), let me know — I can answer that too!
Parent Tip: Review the logic above to help your child master the concept of unlabeled animal cell worksheet.