Looking at Cell Functions
All cells have a purpose. If they don't do anything productive, they are not needed anymore. In the big picture, a cell's purpose is much more important than acting as small organizational pieces. They had their purpose long before they started working together in groups and building more advanced organisms. When alone, a cell's main purpose is to survive.
Even if you were a single cell, you would have a purpose. You would have to survive. You would be moving around (probably in a liquid) and just trying to stay alive. You would have all of your pieces inside of you. If you were missing a piece you needed to survive, you would die. Scientists call those pieces organelles. Organelles are groups of complex molecules that help a cell survive.
All Cells are not Created EqualIn the same way that cells survive in different ways; all cells have different types and amounts of organelles. The larger a cell becomes the more organelles it will need. It makes sense if you think about it. If you are a big cell, you will need to eat more than a little cell. You will also need to convert that food into energy. A larger cell would need to eat more and may wind up having more mitochondria to process that food into energy.
While they might have a purpose, more advanced cells have a difficult time surviving on their own. A cell from your brain could not survive in a Petri dish for long. It doesn't have the right pieces to live on its own. It does have the ability to transmit electrical systems around your body. An amoeba could survive in a dish forever, thrive, and reproduce. On the other hand, that amoeba will never help you transmit electrical impulses. The brain cell is far more advanced and has specific abilities and organelles. Simpler cells have a better chance of surviving on their own while complex cells can accomplish tasks that are more advanced.
no
Without knowing what the functions are a person will have difficulty knowing which are specialized for epithelial cells. Including the functions would insure that a person will provide the correct answer.
Growing, reproducing, and responding to a stimulus are common functioning characteristics amongst all cells. In addition, all cells can maintain their boundaries, metabolize, digest nutrients, and dispose wastes.
A living cell goes through many processes that keep it alive. In order to perform basic functions it goes through processes such as converting fuel into usable energy. Cells also divide in order to keep living and keep the creature they are making up alive. Without cell division we would not be able to live.
Tissue
reproduce.
نننغ
Neurons, sarcomeres, osteoblasts, and cardiac muscle cells all have specialized functions performed by no other cells.
Neurons, sarcomeres, osteoblasts, and cardiac muscle cells all have specialized functions performed by no other cells.
food is used up by all the cells in the body as all the cells need energy to perform their functions
Cells
cells
NO
no
True because Nucleic acids contain instructions that cells need to carry out all the life functions of life.
Without knowing what the functions are a person will have difficulty knowing which are specialized for epithelial cells. Including the functions would insure that a person will provide the correct answer.
Penguin cells are eukaryotic cells so they have the same organelles as people cells (and all animal cells!)