Question
(7.LS1.1) Which of the following best explains the role of the mitochondria in a cell?
(5 Points)
The mitochondria produce proteins that help with cell structure.
The mitochondria store energy in the form of glucose for later use.
The mitochondria are responsible for producing energy in the form of ATP, which powers various cellular functions.
The mitochondria regulate the movement of materials into and out of the cell.
3.(7LS1.1) A student is constructing a model of a plant cell. Which of the following accurately describes the function of the cell wall in the plant cell model?
(5 Points)
The cell wall acts as a protective barrier, helping the cell maintain its shape and providing structural support.
The cell wall stores water and nutrients for later use.
C) The cell wall synthesizes proteins necessary for cell division.
D) The cell wall regulates the movement of molecules into and out of the cell.
4.(7.LS1.2) A student places a slice of potato in two different beakers: one filled with distilled water and the other filled with saltwater. After an hour, the potato slice in distilled water becomes firm, while the one in saltwater becomes soft.
Which statement best explains the role of passive transport in this experiment?
(5 Points)
The salt in the saltwater moves into the potato cells, causing them to shrink.
Water moves out of the potato cells in saltwater, causing the cells to lose pressure and shrink.
The potato cells actively pump out water in saltwater, making them soft.
The potato absorbs salt from the saltwater, which changes its texture.
5.(7.LS1.2) A scientist is studying how oxygen moves across the cell membrane. She places living cells in a sealed container with a high concentration of oxygen outside the cells and a low concentration inside. Over time, she observes that oxygen molecules move into the cells without the use of energy.
Which process best explains how oxygen moves into the cells?
(5 Points)
Active transport, because oxygen requires energy to move across the membrane.
Facilitated diffusion, because oxygen moves through protein channels.
Osmosis, because oxygen is dissolved in water.
Diffusion, because oxygen moves from high concentration to low concentration without energy.
(5 Points)
The mitochondria produce proteins that help with cell structure.
The mitochondria store energy in the form of glucose for later use.
The mitochondria are responsible for producing energy in the form of ATP, which powers various cellular functions.
The mitochondria regulate the movement of materials into and out of the cell.
3.(7LS1.1) A student is constructing a model of a plant cell. Which of the following accurately describes the function of the cell wall in the plant cell model?
(5 Points)
The cell wall acts as a protective barrier, helping the cell maintain its shape and providing structural support.
The cell wall stores water and nutrients for later use.
C) The cell wall synthesizes proteins necessary for cell division.
D) The cell wall regulates the movement of molecules into and out of the cell.
4.(7.LS1.2) A student places a slice of potato in two different beakers: one filled with distilled water and the other filled with saltwater. After an hour, the potato slice in distilled water becomes firm, while the one in saltwater becomes soft.
Which statement best explains the role of passive transport in this experiment?
(5 Points)
The salt in the saltwater moves into the potato cells, causing them to shrink.
Water moves out of the potato cells in saltwater, causing the cells to lose pressure and shrink.
The potato cells actively pump out water in saltwater, making them soft.
The potato absorbs salt from the saltwater, which changes its texture.
5.(7.LS1.2) A scientist is studying how oxygen moves across the cell membrane. She places living cells in a sealed container with a high concentration of oxygen outside the cells and a low concentration inside. Over time, she observes that oxygen molecules move into the cells without the use of energy.
Which process best explains how oxygen moves into the cells?
(5 Points)
Active transport, because oxygen requires energy to move across the membrane.
Facilitated diffusion, because oxygen moves through protein channels.
Osmosis, because oxygen is dissolved in water.
Diffusion, because oxygen moves from high concentration to low concentration without energy.
Answers
GPT-4o mini
Here are the best explanations for each of the questions provided:
1. **Role of Mitochondria**:
- **Correct Answer**: The mitochondria are responsible for producing energy in the form of ATP, which powers various cellular functions.
2. **Function of the Cell Wall in Plant Cell**:
- **Correct Answer**: The cell wall acts as a protective barrier, helping the cell maintain its shape and providing structural support.
3. **Role of Passive Transport in the Potato Experiment**:
- **Correct Answer**: Water moves out of the potato cells in saltwater, causing the cells to lose pressure and shrink.
4. **Process of Oxygen Movement Across the Cell Membrane**:
- **Correct Answer**: Diffusion, because oxygen moves from high concentration to low concentration without energy.
These answers align with fundamental concepts of cell biology. Let me know if you need further explanations!
1. **Role of Mitochondria**:
- **Correct Answer**: The mitochondria are responsible for producing energy in the form of ATP, which powers various cellular functions.
2. **Function of the Cell Wall in Plant Cell**:
- **Correct Answer**: The cell wall acts as a protective barrier, helping the cell maintain its shape and providing structural support.
3. **Role of Passive Transport in the Potato Experiment**:
- **Correct Answer**: Water moves out of the potato cells in saltwater, causing the cells to lose pressure and shrink.
4. **Process of Oxygen Movement Across the Cell Membrane**:
- **Correct Answer**: Diffusion, because oxygen moves from high concentration to low concentration without energy.
These answers align with fundamental concepts of cell biology. Let me know if you need further explanations!