Answer:
In a single-celled organism, the absorption directly involves the cell membrane. The cell membrane is responsible for keeping the shape of the cell and for deciding what goes inside the cell and what stays out. It lets the substances that help and sustain the cell in and keeps the substances that would harm the cell outside and thus it is directly involved in the absorption of nutrients.
Answer:
The workbook sharing in excel can be limited to few users which restricted access.
Explanation:
The workbook of excel can be shared with various users. The users can be granted limited access and only few sheets can be displayed by restricting other worksheets. The host can restrict the worksheet by password protection so that unauthorized used can be limited.
