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Questions and Answers
What is the primary function of ciliated cells in the human body?
What is the primary function of ciliated cells in the human body?
- To conduct water and minerals from the root to the leaves of the plant
- To prevent lung damage by sweeping mucus with trapped dust and bacteria (correct)
- To transport food substances from leaves to other parts of the plant
- To absorb sunlight for photosynthesis
What is unique about the structure of palisade cells?
What is unique about the structure of palisade cells?
- They have a large surface area to catch as much sunlight as possible (correct)
- They are extremely elongated like nerve cells
- They are hollow and have lignified walls like xylem cells
- They have a thin cell wall to allow water to pass through easily
What is the main function of phloem cells?
What is the main function of phloem cells?
- To conduct water and minerals from the root to the leaves of the plant
- To absorb minerals and water from the soil
- To carry nerve impulses around the body
- To transport food substances from leaves to other parts of the plant (correct)
What is a unique feature of nerve cells?
What is a unique feature of nerve cells?
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What is the primary function of root hair cells?
What is the primary function of root hair cells?
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What is a consequence of smoking on ciliated cells?
What is a consequence of smoking on ciliated cells?
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Study Notes
Ciliated Cell
- Lines air passages down to the lungs
- Has tiny hairs called cilia
- Functions to stop lung damage by sweeping mucus with trapped dust and bacteria back up the throat to be swallowed
Effects of Smoking
- Causes cilia to die
- Leads to mucus buildup, resulting in a smoker's cough
Palisade Cell
- Found in the top of a leaf
- Has a tall structure with a large surface area to catch as much sunlight as possible
- Packed with chloroplasts to absorb sunlight
- Functions to carry out photosynthesis to help make plant food
Phloem Cell
- Composed of sieve tube elements and companion cells that are living
- Functions to transport food substances (sugars) from leaves to other parts of the plant
Xylem Cell
- Composed of hollow, non-living cells with lignified walls
- Functions to conduct water and minerals from the root to the leaves of the plant
Nerve Cell
- Extremely elongated (long) cells
- Has many branches at both ends to connect to other nerve cells
- Long axis (main branch) is covered in fat to prevent electrical impulses from affecting surrounding parts of the body
- Functions to carry nerve impulses around the body
Root Hair Cell
- Has a large surface area to absorb lots of water
- Thin cell wall allows water to pass through easily
- Does not contain chloroplasts, unlike other plant cells
- Functions to absorb minerals and water
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