this doc is abought Cells and how theyAlive - Cells Alive ... - Free Printable

It looks like you've uploaded a worksheet titled "Cells Alive! WebQuest" with several parts focused on learning about the structure and function of cells, particularly focusing on mitochondria. Since I can't view images directly, I'll solve and explain each section based on your description and typical content found in such webquests.

---

✔ Part A: "NOW BIG IS..."

This section asks students to explore cell size using a website (likely [https://www.cellsalive.com](https://www.cellsalive.com)).

#### 1. How many times bigger is the smallest object you can see with the naked eye than the head of a pin?
- The smallest object visible to the naked eye is about 100 micrometers (μm).
- The head of a pin is about 1 millimeter (mm) = 1000 μm.
- So, the head of a pin is 10 times larger than the smallest visible object.
- But if the question is asking *how many times bigger* the head of a pin is compared to the smallest visible object, then:
- 1000 μm / 100 μm = 10 times bigger.

> ✔ Answer: The head of a pin is 10 times bigger than the smallest object visible to the naked eye.

#### 2. Compare two things that are smaller than a cell.
Let’s assume the student is comparing:
- Virus (~100 nm)
- Ribosome (~20–30 nm)

> ✔ Answer: A virus is typically larger than a ribosome. For example, a virus might be 100 nanometers, while a ribosome is around 25 nanometers — so the virus is about 4 times larger.

#### 3. Compare two things that are larger than a cell.
Examples:
- Human hair (~70–100 μm diameter)
- Flea (~1 mm long)

> ✔ Answer: A flea is much larger than a human hair — about 10 times longer.

---

✔ Part B – Bacteria Cell Model

You're asked to label the parts of a bacterial cell. Based on standard bacterial cell diagrams:

#### Labels:
- Cell Wall
- Plasma Membrane
- Cytoplasm
- Ribosomes
- Nucleoid region (DNA)
- Flagellum
- Pili

> ✔ Note: Bacteria do not have a nucleus — their DNA is in the nucleoid.

---

✔ Part C – Animal Cell Model

You’re to identify and describe organelles.

#### Key Organelles & Functions:
| Organelle | Function |
|---------|--------|
| Nucleus | Controls cell activities; contains DNA |
| Mitochondria | Produces energy (ATP) via cellular respiration |
| Ribosomes | Site of protein synthesis |
| Endoplasmic Reticulum (ER) | Rough ER has ribosomes; makes proteins; Smooth ER makes lipids |
| Golgi Apparatus | Modifies, sorts, and packages proteins/lipids |
| Lysosomes | Break down waste materials and cellular debris |
| Cytoskeleton | Provides structure and shape; involved in movement |
| Vacuoles | Store water, nutrients, waste (small in animal cells) |

---

✔ Part D – Questions

#### 1. What do mitochondria do?
> ✔ Answer: Mitochondria are known as the "powerhouses" of the cell because they produce ATP (energy) through cellular respiration. They use oxygen and glucose to generate energy for the cell.

#### 2. How big are mitochondria?
> ✔ Answer: Mitochondria are typically about 0.5 to 1.0 micrometers (μm) in length — roughly the size of a bacterium.

#### 3. What does the Golgi Apparatus do?
> ✔ Answer: The Golgi apparatus modifies, sorts, and packages proteins and lipids from the endoplasmic reticulum. It sends them to their final destinations, such as the plasma membrane or lysosomes.

---

✔ Sketch Instructions

You’re asked to sketch:
- Mitochondrion
- Golgi Apparatus

#### Sketch Tips:
- Mitochondrion: Draw an oval with an outer membrane and folded inner membrane (called cristae). Label: Outer membrane, Inner membrane, Matrix, Cristae.
- Golgi Apparatus: Draw a stack of flattened sacs (like pancakes), with vesicles budding off. Label: Stacked membranes, Vesicles, Cis face, Trans face.

---

🔍 Final Summary

This WebQuest helps students:
- Understand relative sizes of biological structures.
- Learn organelle functions in bacteria and animal cells.
- Recognize key features like mitochondria and Golgi apparatus.
- Develop skills in observation, comparison, and labeling.

---

If you'd like, I can help format this into a completed printable version or guide you on how to fill it out step-by-step. Let me know!