Question

the centrioles, found only in animal cells, are important for cell division. they help organize the movement of chromosomes during mitosis. the chloroplasts, found only in plant cells, capture sunlight and convert it into glucose through photosynthesis. they contain the green pigment chlorophyll, which absorbs light energy. finally, the central vacuole, found only in plant cells, is a very large storage organelle. it stores water, nutrients, and waste, and also helps maintain pressure inside the cell so the plant stays firm. 1. what is the role of the cell membrane, and which types of cells contain it? both plants and animals 2. how is the cell wall different from the cell membrane, and why is it important for plants? cell wall only in plant cell membrane have 3. compare the functions of the mitochondria and chloroplasts. how do they differ in how they provide energy to the cell? 4. why are lysosomes mainly found in animal cells, and what would happen to a cell if lysosomes stopped working properly? 5. explain the difference between vacuoles in animal cells and the central vacuole in plant cells. 6. a cell has a nucleus, mitochondria, and lysosomes. what type of cell is this, and how do you know? 7. a scientist examines a cell and notices it contains a cell wall, chloroplasts, and a large central vacuole. what type of cell is this, and which organelles give it away? 8. under a microscope, you observe a cell that has ribosomes and cytoplasm but no nucleus or other membrane - bound organelles. what type of cell is this, and why? 9. a researcher finds a cell with centrioles, mitochondria, and a small vacuole. which cell type is this, and what organelles are the key identifiers? 10. a cell is observed that contains a nucleus, smooth er, rough er, golgi bodies, and chloroplasts. what type of cell is this, and what evidence supports your answer?

Explanation:

1. The cell - membrane is a selectively permeable barrier. It controls the movement of substances in and out of the cell. Both plant and animal cells have cell - membranes.
2. The cell wall is a rigid outer layer found only in plant cells, providing structural support and protection. The cell membrane is a flexible layer present in both plant and animal cells, regulating transport. The cell wall is important for plants as it helps maintain their shape and withstands turgor pressure.
3. Mitochondria are the power - houses of the cell, performing cellular respiration to convert glucose into ATP (energy) using oxygen. Chloroplasts are in plant cells and perform photosynthesis, converting light energy into chemical energy (glucose) using carbon dioxide and water.
4. Lysosomes are mainly in animal cells as they are involved in breaking down waste materials and cellular debris. If lysosomes stopped working properly, waste would accumulate in the cell, leading to cell damage and potentially cell death.
5. Animal cells have small vacuoles that store waste and nutrients. Plant cells have a large central vacuole that stores water, nutrients, and waste, and also helps maintain cell turgor pressure.
6. This is an animal cell. The presence of lysosomes is a key indicator as they are mainly found in animal cells, along with mitochondria and a nucleus which are common in both plant and animal cells.
7. This is a plant cell. The cell wall, chloroplasts, and large central vacuole are organelles specific to plant cells.
8. This is a prokaryotic cell. Prokaryotic cells lack a nucleus and membrane - bound organelles but have ribosomes and cytoplasm.
9. This is an animal cell. Centrioles are only found in animal cells, and the presence of a small vacuole and mitochondria further supports this.
10. This is a plant cell. The presence of chloroplasts is a key indicator of a plant cell, along with other organelles like the nucleus, smooth and rough ER, and Golgi bodies which are common in eukaryotic cells.

Answer:

1. Role: Selectively permeable barrier controlling substance movement. Cell types: Both plant and animal cells.
2. Difference: Cell wall is rigid, outer - layer in plant cells only; cell membrane is flexible and in both. Importance for plants: Maintains shape and withstands turgor pressure.
3. Mitochondria: Cellular respiration, convert glucose to ATP using oxygen. Chloroplasts: Photosynthesis, convert light energy to glucose using CO₂ and H₂O.
4. Reason: Involved in waste breakdown. Consequence: Waste accumulation, cell damage/death.
5. Animal cells: Small vacuoles for waste/nutrient storage. Plant cells: Large central vacuole for water, nutrient, waste storage and turgor maintenance.
6. Type: Animal cell. Reason: Presence of lysosomes (mainly in animal cells), mitochondria and nucleus.
7. Type: Plant cell. Organelles: Cell wall, chloroplasts, large central vacuole.
8. Type: Prokaryotic cell. Reason: Lack of nucleus and membrane - bound organelles, presence of ribosomes and cytoplasm.
9. Type: Animal cell. Key identifiers: Centrioles (only in animal cells), small vacuole and mitochondria.
10. Type: Plant cell. Evidence: Presence of chloroplasts.