Answer:
- Tissues are groups of specialized cells.
- In addition to cells, tissues are also composed of extracellular matrix.
Step-by-step explanation:
Cells are the structural and functional unit of living organisms. These cells have the ability to multiply and differentiate to form specialized cells.
A group of differentiated cells join with other similar cells to form a specialized tissue, which will be part of an organ or body structure. Tissues are formed both by cells —cellular component— and by extracellular matrix, which contains fibers and is produced by the same cells.
The other options are not correct because:
- Organelles: are intracellular structures.
- Organs: are formed by tissues, such as the heart, intestine or muscle.
- Genes: are fragments of DNA with structural or functional information of a living being.
- Fibers : are part of the extracellular matrix.
- Enzymes : specialized proteins with a catalytic function.
- Cell junctions: they allow the union and cohesion between cells.