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.
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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