look at the following cartoon of the cell find out the functions of cell organelles
Answers
The nucleus also contains all of the cell's genetic material, or its DNA. This material has all the instructions the cell needs for making proteins and many other important molecules.
The nucleus is surrounded by two membranes. These membranes have many openings in them, which allow for the transport of materials into and out of the nucleus. RNA, proteins, and other molecules move out of the nucleus into the rest of the cell.
The cell's chromosomes are also found in the nucleus. These condensed strands of DNA are what carry all of the cell's genetic information.
When the cell is in its growing phase, the DNA is elongated into very thin, hair-like structures. When the cell is getting ready to divide, the DNA condenses into chromosomes and the material gets duplicated.
Within the nucleus of eukaryotic cells is a structure called the nucleolus. This is the site of ribosome formation.
Prokaryotic cells lack a nucleus. In these organisms (which include the bacteria), the genetic material is free-floating within the cell membrane. The genetic material of prokaryotes is a different shape than that of eukaryotes, but it serves the same function.
Outside of the nucleus but within the cell membrane is a gel-like substance called cytoplasm (also called cytosol). It is made mostly of water and dissolved salts. It bathes the organelles and keeps them healthy. It is also the medium through which materials move about the cell.
Within the cytoplasm is a network of tiny tubes called the cytoskeleton. These tubes are used to give the cell structure and also to support the organelles by holding them into place. Some parts of the cytoskeleton also work to transport certain things between different parts of the cell.
The cytoskeleton is made from two different components: microtubules and microfilaments. Microtubules are hollow and made of protein. They are very important in helping to maintain the cell's shape. They are also important during cell division. When this occurs, the microtubules form structures called spindle fibers, which allow the chromosomes to separate. Microtubules are also part of the different projections coming off of the cell surface. These structures, called cilia and flagella, assist with cell locomotion.
Microfilaments are very thin threads made of protein. Like the microtubules, they help the cell keep its shape.
Making proteins is a very important job for a cell. Ribosomes are small pieces of RNA found throughout the cytoplasm and on some other organelles. Their only job is to assemble proteins.
DNA coding tells them which proteins to make. Prokaryotic cells can have tens of thousands of ribosomes. Eukaryotic cells can have hundreds of thousands, if not millions of them, all making proteins.
Once proteins are made, they need to be moved to different parts of the cell. The endoplasmic reticulum (E.R.) is a collection of lipid membranes that work to move the proteins from one area of the cell to another.
The E.R. comes in two different forms - rough and smooth. Rough E.R. has ribosomes attached to it. These ribosomes make proteins that are scheduled to leave the cell. The E.R. transports these proteins to another organelle that will package them up and ship them out. The smooth E.R. does not have any ribosomes on its surface. This is where the lipid part of the cell membrane is assembled.
Once the ribosomes on the E.R. have made the proteins for exporting from the cell, they need to be packaged in such a way that they can leave the cell and be taken in by the parts of the body that need them. The organelle responsible for this is called the Golgi apparatus (or Golgi bodies), which looks like a stack of pancakes. The Golgi apparatus changes, sorts and packages the proteins as they leave the E.R. so they are ready to leave the cell. Because it is so important to shipping things out of the cell, the Golgi apparatus is always found near the cell membrane.
Answer:
The cell organelles are specialized components of cell that carry out unique duties that help the cell function.
Explanation:
Cell organelles just like organs of the body are different from each other and are the components of the cell that help it carry out its function.
Here are some examples of cell organelles and their functions:
Nucleus: this organelle is the nerve center of the cell. The nucleus controls all of the cell's function and also contains the cell's genetic information ( DNA).
Ribosomes: these organelles form the site at which protein synthesis takes place in the cell
Endoplasmic reticulum - the endoplasmic reticulum are the channels through transport within the cell takes place.
Golgi Bodies: the golgi bodies are the organelles in which synthesized protein are stored.
Mitochondria: The mitochondria is the "power house" of the cell. In the mitochondria,chemical energy in food nutrients is converted to ATP molecules that are able to store energy in a form that can be used by the cells.
Lysosomes: these organelles are small sacs that contain digestive enzymes. The digestive enzymes can be used to digest old foreign materials, worn out organelles and/or food
Vacuoles: These are storage sites of the cell. Cell vacuoles store food, water, waste products, sugar and minerals.
⇒ The above organelles can be found in both animal and plant cells.
There are organelles that are found in plants and not in animals, like:
Cell wall: This is the membrane that encloses the cell membrane in plant cells. It gives plant cell there shape.
Plastids like chloroplasts and leucoplast: By using these organelles plants can make and store food. For instance chloroplasts in green plants contain chlorophyll which helps in photosynthesis.
Central vacuole: This a centrally located fluid filled sac in plant cells.
⇒There are also organelles that exist in animals that not exist in plants eg. cillia and flagella. These organelles aid in movement of materials along tubular organs in multi-cellular organisms and in locomotion is single-celled organisms.