All cells are bound by a cell membrane and contain cytoplasm, which is where the cell parts lie.
Bodies of multicellular organisms, particularly animals, are organized on the basis of tissues, organ and organ systems. A tissue is composed of cells with similar structures … and functions. An organ is composed of several tissues grouped together into a structural and functional unit.  Similarities: 1  One important distinction here is whether we're talking about prokaryotes, i.e. organisms without a complex cell structure, and/or eukaryotes, organisms that have nuclei and other structures. 2  This would significantly affect the comparison. Another difference is that unicellular organisms are smaller as compared to multicellular organisms. Example of unicellular organisms is amoeba, bacteria etc. Example of multicellular organisms are humans, most plants and animals. The biggest similarity between them is that they both contain cell. A unicellular organism only has one cell, a multicellular organism has many cells. Multicellular organisms have specialized cells to carry out different jobs (ie. humans have cardiac muscle cells in the heart, and nervous cells in the brain). Best Answer: unicellular (bacteria and some eukaryotes) and multicellular organisms (like us) both have the basic unit of life, the cell. each cell is considered the basic unit of life because it can act on its own and have do the biochemical processes that a normal cell would do in order to live In unicellular (single-celled) organisms, the single cell performs all life functions. It functions independently. However, multicellular (many celled) organisms have various levels of organization within them. Individual cells may perform specific functions and also work together for the good of the entire organism. May serve a specific function within the organism. Examples-blood cells, nerve cells, bone cells, etc. LEVEL 2 - Tissues. Made up of cells that are similar in structure and function and which work together to perform a specific activity. Examples-blood, nervous, bone, etc. In the vast majority of plants and animals, the body is made up of numerous cells. They are called multicellular organisms. A multicellular organism is actually an aggregation of cells. Here a group of cells functions in a same way to form a tissue or an organ (Example: Xylem vessels, cork cells, cells in the skin). Multicellular organisms have a great capacity to survive than un Unicellular organisms are made up of only one cell, while some multicellular organisms are comprised of trillions of cells. In multicellular organisms, groups of cells sharing similar structure form tissues that carry out a specialized function. Different tissue layers form organs. Although multicellular organisms can have diverse cell types, all cells have certain parts in common (see the interactive cell picture below). All cells are bound by a cell membrane and contain cytoplasm, which is where the cell parts lie. Tissues In multicellular organisms, similar types of cells are organized into groups. Tissues are groups of similar types of cells that work together to carry out specific tasks. Most animals, including humans, have four main types of tissues.  Levels of organization in multicellular organisms include cells, tissues, organs, organ systems, and the organism itself. Different tissues working together to perform a particular function represent another level of organization, the organ. The eye is an organ that functions with the tarsier's brain to allow sight. A multicellular organism is a community of cells. Cells in a multicellular organism are specialized. The ways in which the cells work together and interact depend on the organism. You can think of the cells of an organism as members of a community.
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how are cells similar in multicellular organism