A group of similar cells performing the same function is

Explanation

The question is asking about a group of similar cells that work together to perform the same function. The options are enzyme, organ, tissue, and organelle. The correct answer is option C, a tissue. A tissue is a group of similar cells that work together to perform a specific function. For example, muscle tissue is made up of muscle cells that work together to contract and produce movement. Another example is nerve tissue, which is made up of nerve cells that work together to transmit messages throughout the body. Enzymes, on the other hand, are proteins that speed up chemical reactions in the body. They are not made up of cells and do not perform the same function as tissues. An organ is a structure in the body made up of different tissues that work together to perform a specific function. For example, the heart is an organ made up of muscle tissue, nerve tissue, and connective tissue that work together to pump blood throughout the body. An organelle is a specialized structure within a cell that performs a specific function. Examples of organelles include the mitochondria, which produce energy for the cell, and the nucleus, which contains the cell's genetic material. So, in summary, a group of similar cells that work together to perform the same function is called a tissue.