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Cell Analogy

What Are Cells?

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The last phase is called telophase. Telophase is almost the opposite of prophase, in which the chromosomes begin to revert back into chromatids and the nuclear envelope begins to redevelop. It is here where plant cell cytokinesis takes place that further divides the cell into two. Plant cell cytokinesis is the last step in telophase that plants use in dividing parent and daughter cells.

This is accomplished through the use of cell walls. Plants create cell walls along the metaphase plate to separate from each other. How are the cell walls constructed? This is credited to the Golgi apparatus which sends vesicles think of air bubbles which move to the center of the cell near the metaphase plate.

It surrounds the cell contents and separates the cell from other cells and from the external environment. Nothing gets in or out without permission from the nucleus.

Protoplasm is made up of mostly water and inorganic ions sodium, potassium, calcium, magnesium, for example and proteins, lipids and carbohydrates and is the primary component of the cell.

The protoplasm part that surrounds the nucleus and is involved in cell reproduction is called the nucleoplasm. The protoplasm outside of the nucleus is called the cytoplasm. The fluid part of cytoplasm is called cytosol. Cytoskeleton - Protein structures that give the cell its shape. Centrosomes - These organelles contain short cylinders called centrioles that lie adjacent to the nucleus and play a part in reproduction.

Ribosomes - These structures are made in the nucleolus a structure positioned inside the nucleus and help synthesize proteins. Endoplasmic Reticulum - This organelle is a network of membrane enclosed tiny tubules with rough and smooth parts. The "rough" part of this organelle is covered with ribosomes and makes certain proteins. The "smooth" part stores calcium and contains enzymes that make lipids. Golgi Apparatus - These organelles are like the UPS service, packaging, sorting and processing of proteins made by the rough ER to be secreted out of the cell or used to replace worn out cell parts.

Along with being the control center, the nucleus is also the largest organelle in the cell. Surrounding the nucleus is the nuclear membrane. The nuclear membrane is two membranes, with the same center which basically separate the nucleus from the cytoplasm.

Within the nucleus is the nucleolus, which is a structure solely, formed with the purpose of creating Ribosomal RNA. Another important part of the animal cell is the ribosome. Ribosomes are a combination of nucleic acid, or RNA and protein in the cell. Ribosomes are essential to the cell because they are the site of protein synthesis, which is the creation of protein using both DNA and RNA. Another important part to the cell of an animal is the lysosome.

The lysosome is commonly found in animal cells and less common to plant cells Lysosomes, Peroxisomes, Secretory Vesicles. The lysosome is a round organelle which is just inside of the cell membrane. The lysosome itself is also surrounded by a membrane. These enzymes within the lysosome break up the ingested nutrients and distribute them amongst the cell.

Another term used to describe a lysosome is vesicle. Also contained within an animal cell are the vacuole and the mitochondrion. The vacuole is basically the waste management center of the cell. Over time a vacuole will become filled with different items coming in and out of the cell. First off, the vacuole receives food which is waiting to be digested by the enzymes within the lysosomes. While the vacuole becomes full with food which is on its way into the cell, at the same time it is also being filled with waste which no longer serves a purpose, and is on its way out of the cell.

Along with the vacuole, there is also the mitochondrion. The mitochondrion is the area for energy storage within the cell. The mitochondrion can be either sphere, or oval shaped.

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The Cell Biology chapter of this High School Biology Homework Help course helps students complete their cell biology homework and earn better grades. This homework help resource uses simple and fun videos that are about five minutes long.

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What are the differences between the process of cytokinesis in plant and animal cells. 1 educator answer how are animal, plant, bacteria, and fungal cells alike? How are they important to each other? 1 educator answer List three similarities and differences between plant and animal cells.

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They are divided into those two groups based on whether the cell has a true nucleus and nuclear membrane, as well as important differences in DNA, organelles, the way they move, and functions within the cell. Need information on cytokinesis for a plant cell? Cytokinesis is one of the last steps in mitosis that allows a parent cell to divide from a daughter cell. Read this article to help you understand cytokinesis in a plant cell and help you finish your homework.

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Nearly all plant cells have a cell wall made of cellulose and may contain waxes and suberin. The cell wall lies outside the plasma membrane and is non living. It is tough and firm and provides support for the plant body. The ribosome basically maintains the cell’s health through protein synthesis. Another important part to the cell of an animal is the lysosome. The lysosome is commonly found in animal cells and less common to plant cells (Lysosomes, Peroxisomes, Secretory Vesicles). The lysosome is a round organelle which is just inside of the cell membrane.