1. Cell Membrane- Every cell is surrounded by a cell membrane. It is sometimes called a plasma membrane. The cell membrane separtes the cell from its external environment and from the neighboring cells. It also regulates the passage or transport of certain molecules into and out of the cell, while preventing the passage of others. This is why the cell membrane is often called a selective semipermeable membrane. The cell membrane consists of protein and lipid (fatty substance) molecules arranged in a double layer.
2. Nucleus- The nucleus is the most important organelle (Little Body) within the cell. It has two vital functions; to control the activities of the cell and to facilitate cell division. This spherical organelle is usually located in or near the center of the cell. Various dyes or stains, such as iodine, can be used to make the nucleus stand out. The nucleus stains vividly becaue it contains deoxyribonucleic acid (DNA) and protein. Surrounding the nucleus is a membrane called the nuclear membrane. The DNA and protein are arranged in a loose and diffuse state called chromatin. When the cell is ready to divide, the chromatin condenses to form short, rodlike structures called chromosomes. There is a specific number of chromosomes in the nucleus for each species. When a cell reaches a certain size, it may divide to form two new cells. The nucleus divides first by a process called mitosis. It is only during the process of mitosis that the chromosomes can be seen. Chromosomes are important because they store hereditary material DNA, which is passed on from one generation of cells to the next.
3. Cytoplasm- Cytoplasm is a sticky, semifluid material found between the nucleus and the cell membrane. Chemical analysis of the cytoplasm shows that it consists of proteins, lipids, carbohydrates, minerals, salts, and water. Each of these substances other than water varies greatly from one cell to the next and form one organism to the next. The cytoplasm is the background for all chemical reactions that take place in the cell, such as protein synthesis an cellular respiration. Molecules are transported about the cell by the circular motion of the cytoplasm. Embedded in the cytoplasm are organelles, or cell structures that help a cell to function.
there's definitely more than three parts of a cell but I'm guessing you want:
(this is for eukaryotic animal cells)
- cell membrane : maintains homeostasis by allowing cell to control what enters and exits, also contains all of the organelles and cytoplasm
- cytoplasm : watery substance in which the organelles are suspended, allows things to exist in solution inside cells and also provides volume and structure
- organelles : membrane-contained 'cell organs' that perform the various functions of the cell, including respiration, housing DNA, producing proteins, etc. prokaryotic cells do not have organelles
The three basic parts of a cell are the plasma membrane, the cytoplasm, and the nucleus.
The three main parts of the cell are the cell membrane (surrounds and protects the cell), the cytoplasm (the liquid inside the cell), and the nucleus (control center of the cell).
Everything inside a cell is not really one thing, but a bunch of parts. The substance that these parts are floating around in is the cytoplasm, but the core or center of a cell is the nucleus. The "powerhouse" of the cell is the mitochondria, etc. There are numerous parts to a cell, and it depends on if you are talking about a plant cell or an animal cell.
The function of the cell wall is to protect the cell from foreign objects =]
protoplasm , cell membrane and nucleus (may be well defined or not well defined)
The three laws of the cell theory is: 1) All living things are composed of cells 2)Cells are the basic unit of structure and function in living things 3)Cells are made from other existing cells
the cell membranes selectivley permits material to pass in or out of the cell
They have money
what three parts of an egg that make it a cell
A neuron has three basic parts, the cell body, the axon, and the dendrites.For more info, see the related link below.
Organelles.
list three parts of the cell hteory list three parts of the cell hteory
The cytoskeleton is made up of three main parts. (microfilaments, intermediate filaments, and microtubules) They all help to maintain cell structure and cell shape.
The three main parts of a nueron are: the dendrites, the axon, and the cell body.
Describe how the onion and cheek cell were similar in observed parts what parts did they have common? Well they are similar because they both have a nucleus and cytoplasm. They are different because in an onion cell there is a cell wall, doesnt have chlorplast, and it is a plant. For a cheek cell it has a cell membrane, doesnt have a cell wall, and is an animal.
The function of the cell membrane in the plant cell is to separate the interior parts of the cell from the cell wall, and to block off what the cell wall can't.
to protect the rest of the parts of that cell and to hold all of the parts together
prokayotic cell