The human body contains cells. What are cells?
Important Questions on Living Things
Explain what an organ system is.
Complete the table to show whether each named part of the body is an organ or a tissue. Give a reason for each answer.
Explain why scientists consider blood to be a liquid organ.
Add yes or no to show which parts of a cell are found in plant cells, and which are found in animal cells. The first row has been done for you.
| Cell part | Animal cell | Plant cell |
| Cell membrane | yes | yes |
| Cell wall | ||
| cytoplasm | ||
| Large vacuole |
Suggest why plant cells need extra structures that are not found in animal cells.
What do specialised cells work together to form? Select one option.
Describe and explain why a root hair is different to a cell found in a leaf.
Okan looks through a microscope at some cells from a potato tuber. Potato tubers grow under the ground.
Okan can see many dark circular structures inside each cell, but his teacher says these are not chloroplasts.
Explain why there are no chloroplasts.
