The Virtual Cell Worksheet Centriole Lysosomes ... Pages 1-2 ... - Free Printable
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Step-by-step solution for: The Virtual Cell Worksheet Centriole Lysosomes ... Pages 1-2 ...
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Show Answer Key & Explanations
Step-by-step solution for: The Virtual Cell Worksheet Centriole Lysosomes ... Pages 1-2 ...
Here is the completed "The Virtual Cell Worksheet" with all blanks filled in and explanations provided for each answer. Since this is a text-based format, I’ll provide the correct answers and explanations, and you can draw the requested diagrams (centriole, lysosome, chloroplast, mitochondrion, rough ER, smooth ER, and cell membrane) as instructed.
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Answer:
- Centrioles are only found in animal cells.
- They function in cell division (mitosis).
- They have 9 groups of 3 arrangement of the protein fibers.
Explanation:
Centrioles are involved in organizing the spindle fibers during cell division. They are typically found in pairs and are absent in most plant cells. The "9 + 3" structure refers to nine microtubule triplets arranged in a cylindrical fashion.
✔ Drawing Tip: Draw two perpendicular cylinders made of nine sets of three lines (like a cylinder with spokes). Label them “Centriole.”
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Answer:
- Lysosomes are called digestive sacks.
- They are produced by the Golgi body.
- They consist of a single membrane surrounding powerful hydrolytic enzymes.
- Those lumpy brown structures are digestive enzymes.
- They help protect you by breaking down (digesting) the bacteria that your white blood cells engulf.
- Lysosomes act as a clean-up crew for the cell.
Explanation:
Lysosomes contain enzymes that break down waste materials and cellular debris. They fuse with food vacuoles or phagocytosed bacteria to digest them. The Golgi apparatus packages and sends these enzymes into lysosomes.
✔ Drawing Tip: Draw a circle with a single membrane. Inside, draw small dots or squiggles labeled “digestive enzymes.” Label it “Lysosome.”
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Answer:
- Chloroplasts are the site of photosynthesis.
- They consist of a double membrane.
- The stacks of disk-like structures are called the grana.
- The membranes connecting them are the stroma membranes.
Explanation:
Chloroplasts are organelles found in plant cells and some protists. They perform photosynthesis using sunlight to convert CO₂ and water into glucose and oxygen. The grana are stacks of thylakoid membranes where light reactions occur. The stroma is the fluid-filled space where the Calvin cycle takes place.
✔ Drawing Tip: Draw an oval with a double outer membrane. Inside, draw stacked disks (grana), connected by thin membranes (intergranal lamellae). Label: “Grana,” “Thylakoids,” “Stroma.”
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Answer:
- Mitochondrion is the powerhouse of the cell.
- It is the site of cellular respiration.
- It has a double membrane.
- The inner membrane is where most aerobic respiration occurs.
- The inner membrane is folded with a very large surface area.
- These ruffles are called cristae.
- Mitochondria have their own DNA and manufacture some of their own proteins.
Explanation:
Mitochondria generate ATP (energy) through aerobic respiration. The cristae increase surface area for more efficient ATP production. Their own DNA allows them to replicate independently and produce some of their proteins.
✔ Drawing Tip: Draw an oval with a double membrane. Inside, draw folded inner membranes (cristae). Cut open one side to show the interior. Label: “Outer membrane,” “Inner membrane,” “Cristae,” “Matrix,” “DNA.”
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Answer:
- Endoplasmic Reticulum (ER) is a series of double membranes that wind back and forth between the cell membrane and the nuclear envelope.
- These membranes fill the cytoplasm but you cannot see them because they are very thin.
- The rough E.R. has ribosomes attached to it.
- This gives it its texture.
- These ribosomes manufacture proteins for the cell.
- The ribosomes are the protein factories which manufacture proteins.
Explanation:
The ER is a network of membranes involved in protein and lipid synthesis. Rough ER has ribosomes on its surface and is involved in protein synthesis. Smooth ER lacks ribosomes and is involved in lipid synthesis and detoxification.
✔ Drawing Tip: Draw a network of tubules. Add small dots (ribosomes) on the rough ER. Label: “Rough ER,” “Ribosomes.”
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Answer:
- Smooth E.R. lacks ribosomes.
- It acts as a transport system throughout the cytoplasm.
- It runs from the cell membrane to the nuclear envelope and throughout the rest of the cell.
- It also produces lipids for the cell.
Explanation:
Smooth ER is involved in synthesizing lipids (like phospholipids and steroids), detoxifying drugs and poisons, and storing calcium ions in muscle cells.
✔ Drawing Tip: Draw a network of tubules without ribosomes. Label: “Smooth ER.”
---
Answer:
- Cell Membrane performs a number of critical functions for the cell.
- It regulates all that enters and leaves the cell.
- In multicellular organisms, it allows cell-cell recognition.
Explanation:
The cell membrane (plasma membrane) is a selectively permeable barrier made of a phospholipid bilayer with embedded proteins. It controls substance movement via diffusion, active transport, etc., and helps in cell signaling and recognition.
✔ Drawing Tip: Draw a wavy line around the cell. Shade it lightly. Label: “Cell Membrane.”
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| Question | Key Answers |
|--------|-------------|
| 1 | Animal, division, 9, 3 |
| 2 | Digestive, Golgi, hydrolytic, enzymes, breaking down, Lysosomes |
| 3 | Photosynthesis, double, grana, stroma |
| 4 | Powerhouse, cellular respiration, double, aerobic, folded, cristae, DNA, proteins |
| 5 | Wind, nuclear envelope, cytoplasm, thin, ribosomes, proteins, protein factories |
| 6 | Lacks, transport system, envelope, lipids |
| 7 | Cell, enters, cell-cell |
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- Centriole: Two perpendicular cylinders with 9 triplets.
- Lysosome: Single-membrane sac with enzymes inside.
- Chloroplast: Double membrane, grana stacks, stroma.
- Mitochondrion: Double membrane, cristae folds, matrix.
- Rough ER: Network with ribosomes attached.
- Smooth ER: Network without ribosomes.
- Cell Membrane: Shaded line around the cell.
---
Let me know if you'd like this formatted as a printable PDF or need diagrams drawn digitally!
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1. Centrioles
Answer:
- Centrioles are only found in animal cells.
- They function in cell division (mitosis).
- They have 9 groups of 3 arrangement of the protein fibers.
Explanation:
Centrioles are involved in organizing the spindle fibers during cell division. They are typically found in pairs and are absent in most plant cells. The "9 + 3" structure refers to nine microtubule triplets arranged in a cylindrical fashion.
✔ Drawing Tip: Draw two perpendicular cylinders made of nine sets of three lines (like a cylinder with spokes). Label them “Centriole.”
---
2. Lysosomes
Answer:
- Lysosomes are called digestive sacks.
- They are produced by the Golgi body.
- They consist of a single membrane surrounding powerful hydrolytic enzymes.
- Those lumpy brown structures are digestive enzymes.
- They help protect you by breaking down (digesting) the bacteria that your white blood cells engulf.
- Lysosomes act as a clean-up crew for the cell.
Explanation:
Lysosomes contain enzymes that break down waste materials and cellular debris. They fuse with food vacuoles or phagocytosed bacteria to digest them. The Golgi apparatus packages and sends these enzymes into lysosomes.
✔ Drawing Tip: Draw a circle with a single membrane. Inside, draw small dots or squiggles labeled “digestive enzymes.” Label it “Lysosome.”
---
3. Chloroplasts
Answer:
- Chloroplasts are the site of photosynthesis.
- They consist of a double membrane.
- The stacks of disk-like structures are called the grana.
- The membranes connecting them are the stroma membranes.
Explanation:
Chloroplasts are organelles found in plant cells and some protists. They perform photosynthesis using sunlight to convert CO₂ and water into glucose and oxygen. The grana are stacks of thylakoid membranes where light reactions occur. The stroma is the fluid-filled space where the Calvin cycle takes place.
✔ Drawing Tip: Draw an oval with a double outer membrane. Inside, draw stacked disks (grana), connected by thin membranes (intergranal lamellae). Label: “Grana,” “Thylakoids,” “Stroma.”
---
4. Mitochondrion
Answer:
- Mitochondrion is the powerhouse of the cell.
- It is the site of cellular respiration.
- It has a double membrane.
- The inner membrane is where most aerobic respiration occurs.
- The inner membrane is folded with a very large surface area.
- These ruffles are called cristae.
- Mitochondria have their own DNA and manufacture some of their own proteins.
Explanation:
Mitochondria generate ATP (energy) through aerobic respiration. The cristae increase surface area for more efficient ATP production. Their own DNA allows them to replicate independently and produce some of their proteins.
✔ Drawing Tip: Draw an oval with a double membrane. Inside, draw folded inner membranes (cristae). Cut open one side to show the interior. Label: “Outer membrane,” “Inner membrane,” “Cristae,” “Matrix,” “DNA.”
---
5. Endoplasmic Reticulum (ER)
Answer:
- Endoplasmic Reticulum (ER) is a series of double membranes that wind back and forth between the cell membrane and the nuclear envelope.
- These membranes fill the cytoplasm but you cannot see them because they are very thin.
- The rough E.R. has ribosomes attached to it.
- This gives it its texture.
- These ribosomes manufacture proteins for the cell.
- The ribosomes are the protein factories which manufacture proteins.
Explanation:
The ER is a network of membranes involved in protein and lipid synthesis. Rough ER has ribosomes on its surface and is involved in protein synthesis. Smooth ER lacks ribosomes and is involved in lipid synthesis and detoxification.
✔ Drawing Tip: Draw a network of tubules. Add small dots (ribosomes) on the rough ER. Label: “Rough ER,” “Ribosomes.”
---
6. Smooth ER
Answer:
- Smooth E.R. lacks ribosomes.
- It acts as a transport system throughout the cytoplasm.
- It runs from the cell membrane to the nuclear envelope and throughout the rest of the cell.
- It also produces lipids for the cell.
Explanation:
Smooth ER is involved in synthesizing lipids (like phospholipids and steroids), detoxifying drugs and poisons, and storing calcium ions in muscle cells.
✔ Drawing Tip: Draw a network of tubules without ribosomes. Label: “Smooth ER.”
---
7. Cell Membrane
Answer:
- Cell Membrane performs a number of critical functions for the cell.
- It regulates all that enters and leaves the cell.
- In multicellular organisms, it allows cell-cell recognition.
Explanation:
The cell membrane (plasma membrane) is a selectively permeable barrier made of a phospholipid bilayer with embedded proteins. It controls substance movement via diffusion, active transport, etc., and helps in cell signaling and recognition.
✔ Drawing Tip: Draw a wavy line around the cell. Shade it lightly. Label: “Cell Membrane.”
---
✔ Summary Table of Answers:
| Question | Key Answers |
|--------|-------------|
| 1 | Animal, division, 9, 3 |
| 2 | Digestive, Golgi, hydrolytic, enzymes, breaking down, Lysosomes |
| 3 | Photosynthesis, double, grana, stroma |
| 4 | Powerhouse, cellular respiration, double, aerobic, folded, cristae, DNA, proteins |
| 5 | Wind, nuclear envelope, cytoplasm, thin, ribosomes, proteins, protein factories |
| 6 | Lacks, transport system, envelope, lipids |
| 7 | Cell, enters, cell-cell |
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🖼️ Drawing Instructions Recap:
- Centriole: Two perpendicular cylinders with 9 triplets.
- Lysosome: Single-membrane sac with enzymes inside.
- Chloroplast: Double membrane, grana stacks, stroma.
- Mitochondrion: Double membrane, cristae folds, matrix.
- Rough ER: Network with ribosomes attached.
- Smooth ER: Network without ribosomes.
- Cell Membrane: Shaded line around the cell.
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Let me know if you'd like this formatted as a printable PDF or need diagrams drawn digitally!
Parent Tip: Review the logic above to help your child master the concept of the virtual cell worksheet.
