Answer:
Living cells.
Step-by-step explanation:
Living cells are generally more useful than dead cells. Here are some reasons why:
1. Functionality: Living cells are capable of carrying out various biological functions, such as metabolism, growth, and reproduction. They are the building blocks of living organisms and play essential roles in maintaining life processes.
2. Research and Medicine: Living cells are crucial for scientific research and medical applications. They can be used to study cellular processes, develop new treatments and therapies, and understand diseases. Examples include studying cancer cells to develop targeted treatments or using stem cells for regenerative medicine.
3. Biotechnology: Living cells are utilized in biotechnological processes, such as fermentation, protein production, and genetic engineering. These processes rely on the metabolic activities and genetic material of living cells to produce desired products or modify organisms for various purposes.
4. Diagnosis: Living cells are often used in diagnostic tests, such as blood tests or cell cultures. By examining the characteristics and behavior of living cells, healthcare professionals can identify diseases, monitor treatment effectiveness, and make informed medical decisions.
On the other hand, there are specific cases where dead cells can also be useful. For example:
1. Histology: Dead cells can be preserved and used in histological studies to examine tissue structure and identify abnormalities or diseases.
2. Forensics: Analysis of dead cells, such as hair, skin, or blood cells, can provide valuable information in forensic investigations for identifying individuals or determining causes of death.
In general, the usefulness of cells, whether living or dead, depends on the specific context and purpose for which they are being utilized.