Select all that apply Which of the following structures are common to animal cells? \( \square \) Rough ER \( \square \) Mitochondria \( \square \) Cell membrane \( \square \) Centrioles \( \square \) Nucleus \( \square \) Chloroplasts \( \square \) Cell wall \( \square \) Smooth ER

To determine which structures are common to animal cells, let's analyze each option: 1. **Rough ER**: Present in animal cells; it is involved in protein synthesis. 2. **Mitochondria**: Present in animal cells; they are the powerhouses of the cell, generating ATP. 3. **Cell membrane**: Present in all animal cells; it provides structure and regulates what enters and exits the cell. 4. **Centrioles**: Present in animal cells; they play a role in cell division. 5. **Nucleus**: Present in animal cells; it contains the cell's genetic material and controls cellular activities. 6. **Chloroplasts**: Not present in animal cells; these are found in plant cells and are involved in photosynthesis. 7. **Cell wall**: Not present in animal cells; this structure is found in plant cells and provides rigidity. 8. **Smooth ER**: Present in animal cells; it is involved in lipid synthesis and detoxification. Based on this analysis, the structures common to animal cells are: - Rough ER - Mitochondria - Cell membrane - Centrioles - Nucleus - Smooth ER Thus, the correct selections are: - \( \square \) Rough ER - \( \square \) Mitochondria - \( \square \) Cell membrane - \( \square \) Centrioles - \( \square \) Nucleus - \( \square \) Smooth ER The options for Chloroplasts and Cell wall should not be selected.