Multicellular organisms begin as a single cell. These cells then grow and undergo differentiation, the process by which cells develop specialized forms and functions.
A collection of cells that function together makes up a tissue. A collection of tissues that function together makes an organ.
Well actually, a cell makes up tissue. Then the tissue makes up an organ, the organ makes the organ system, then the organ system makes up an organism. But the exact amount of cells in an organism is unknown, but it is estimated to be 100 trillion.
In a single-celled organism (Unicellular organism), one cell carries out all the functions of the body. For example, transporting nutrients, excretion ,etc are performed by the single cell which makes up the organism. In a multi-cellular organism, on the other hand, various cells arrange or group themselves to perform certain or particular functions. They are specialized to perform any one type of function. This is what makes up tissues, organs and ogran systems in a multi-cellular organism. One group of cells performs one function. For example, blood corpuscles are of different types. One type (WBCs) helps in fighting diseases, another type (RBCs) will help in transporting oxygen to various cells and so on.
The number of cells in an organism can vary widely depending on the species. For example, humans have trillions of cells in their body, while simpler organisms like bacteria may consist of just a single cell. The total number of cells in an organism is influenced by factors such as size, complexity, and function.
Eukaryotic cells
a tissue is the same group of cells that makes up part of an organism.
There are two types of cells. Plant cells, and animal cells. Just because people have animal cells, we are not animals. People are also too narrow of a group to become an own organism group.
An organism.
multiple cells
A group of organs makes an organ system or a organism.
A collection of cells that function together makes up a tissue. A collection of tissues that function together makes an organ.
A group of cells make up a tissue.
Well actually, a cell makes up tissue. Then the tissue makes up an organ, the organ makes the organ system, then the organ system makes up an organism. But the exact amount of cells in an organism is unknown, but it is estimated to be 100 trillion.
The outer tissue layer of an organism is typically made up of epithelial cells. These cells are responsible for protecting the organism from the external environment and regulating the exchange of materials between the organism and its surroundings.
that it has many cells that are able to carry out specific tasks
In a single-celled organism (Unicellular organism), one cell carries out all the functions of the body. For example, transporting nutrients, excretion ,etc are performed by the single cell which makes up the organism. In a multi-cellular organism, on the other hand, various cells arrange or group themselves to perform certain or particular functions. They are specialized to perform any one type of function. This is what makes up tissues, organs and ogran systems in a multi-cellular organism. One group of cells performs one function. For example, blood corpuscles are of different types. One type (WBCs) helps in fighting diseases, another type (RBCs) will help in transporting oxygen to various cells and so on.
a one celled organism has only one cell which it depends on for everything which makes it grows faster whereby a many celled organism has multiple cells that it depends so it grows faster