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Cell Membrane: The Blue Outside Layer On My Model

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Cell membrane- the blue outside layer on my model: The cell membrane is made up of a phospholipid bilayer. The membrane excludes, takes in, and excretes various substances, all in specific amounts. In addition, they must able to communicate with other cells. The plasma membrane needs lipids, which make a semi-permeable barrier between the cell and its environment. It also needs proteins, which are involved in cross-membrane transport and cell communication.

Nucleus- the swirled light blue ball in the center of my model: The Nucleus is a double-membrane bound cell organelle present in eukaryotic cells. The nucleus contains the genetic material of the cell - the DNA. DNA contains the information required to build cellular proteins. The membrane that surrounds the nucleus is the nuclear envelope. Tiny pores in the nuclear envelope, called nuclear pores, then selectively permit certain macromolecules to enter and leave the nucleus. …show more content…

As these ribosomes make proteins, they feed the newly forming protein chains. Some are transferred fully into the ER and float inside, while others are anchored in the membrane. Inside the ER, the proteins fold and undergo modifications, such as the addition of carbohydrate side chains. These modified proteins will be either incorporated into cellular membranes, the membrane of the ER or those of other organelles—or secreted from the

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1. Nucleus- present only in eukaryotic cells, this structure stores most of the genetic information of the cell. The nucleus directs the production of proteins through the synthesis of mRNA. 2.

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In baseball players roam the field and they make plays, by catching the ball or throwing the ball to a base for an out. Ribosomes make proteins and baseball players make plays. 7. Cytoplasm - The cytoplasm in a cell hold the organelles in place and fills the extra space in a cell. Cytoplasm is just like the seats in a baseball stadium.

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Rationale The cell membrane, also called the plasma membrane is found in all cells and separates the extracellular side of the cell from the cytosolic side (Cell membrane (plasma membrane), 2023). The purpose of the cell membrane is to communicate with the cell’s external environment, to contain the cell’s contents and to control the transport of molecules in and out of the cell. Diffusion is the passive movement of molecules from an area of high to low concentration.

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Cytoplasm is a specially organized solution of salt, nutrients, and complex molecules in water. The composition of cytoplasm may vary among different types of cells, but its purpose is the same – it provides a medium in which complex reactions can occur. For complex reactions to occur, cells need a source of energy.

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Lipids are also very rigid molecules that help keep the shape of the membrane.

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What we knew in last 100 years about chromosomes has completely changed now with this new discovery. We had thought the nucleus is made up of tightly wrapped proteins called histones which form chromosomes. “New research shows that not only the the chromosomes contain 25,000 or more genes it contains also a mysterious structure scientists have found a sheet-like structure that occupies the 47% of the chromosome” (BEC Crew). For the last century, we thought the cell nucleus was made of complex DNA and histone proteins. The reason we did not know much about the cell nucleus is because the chromosomes were only visible during cell division that is during meiosis and mitosis, where the chromosomes are tightly packed to form supercoiled like structures which were visible under a microscope.

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  The cell membrane regulates the deoxyribonucleic acid, enzymes, and it builds a pathways for any reaction such as metabolic.   When waste products are present the cell membrane gets rid of it and the cell membrane allows important things inside .   A great example of what the cell membrane allows in or out is water and oxygen.   Specific molecules are only made to enter the cell which is also called semipermeable.   Molecules can be passed by active transport or either passive transport.

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The Nucleus is the most prominent feature of the cell they are commonly found in eukaryotic cells such as animal, plant and fungi. It basically acts as the brain of the cell in which it directs. It is surrounded by vthe nucleus membrane made up of phospholipids that form lipid bilayers. The nuclear envelop assists in controlling the passage of molecules such as the RNA into and out of the nucleus through the nuclear pores. (Bailey, 2015).

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A Eukaryote has a nucleus in its cell but a prokaryote does not have a nucleus in its

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The nucleus is a part of a eukaryotic cell that controls all of the cells activity. There are many parts of the nucleus, considering all it does this makes sense. All the parts word together to achieve a shared goal. This organelle is surrounded by a nuclear membrane that allows things in and out of the nucleus, as long as they are smaller than a certain size. The outer layer of the membrane is always in contact with the rough endoplasmic reticulum for easy transport of the amino acids.

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Eukaryotic cells are quite distinct containing nuclear and cytoplasmic compartments. The nucleus is a membrane-enclosed organelle that is surrounded by a nuclear envelope (NE). In the cells a lot of transportation occurs. One of the reasons is that nuclear proteins are synthesised in the cytoplasm, but are needed in the nucleus. Another reason is that to be able to synthesize the proteins that are required for the cell, the different RNA species located in the nucleus are needed in the cytoplasm (6).

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The nucleus contains the DNA, with genetic codes that helps to shape the inherited traits. The cytoplasm is like a workshop in the cell, where most functions occur. Mitochondria in the cell which provides energy from the conversion of food, which let the human body to function. They are tiny compartments found within cells and they perform lots of

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Hello fellow organelles! Vote for me to be the president of the organelle club! For those who don’t know me, i’m the nucleus. I’m proud to say that i’m one of the most important organelles there are in a cell.

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It consists of a network of membranous tubules and flattened sacs. The bags are known as cisternae, a general term for membrane structures that come in stacks and have a flattened-pancake structure. The discs and tubules of the ER are hollow, and the interior space is called the lumen or cisternal space. The ER membrane is continuous with the nuclear envelope, and its lumen connects to the space between the two membrane layers of the nuclear envelope. ER is divided into two types: rough ER, having ribosomes attached to its outersurface, and smooth ER, lacking ribosomes.

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The nucleus is generally in the center of a cell. A typical cell nucleus is so small that ten thousand could fit on the tip of a needle. One strand of DNA is around 6 feet long. This mean that 6 feet of DNA fits inside the nucleus, which occupies about 10% of a total cell (https://en.wikipedia.org/wiki/Cell_nucleus), of a microscopic cell. For this to happen eight separate histone protein subunits attach to the DNA molecule to

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