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The history of the animal cell
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A cell is the smallest functional unit of an organism, that has a structure. The parts of a cell vary in sizes, functions, and shapes. Cells are usually microscopic and are either eukaryotic or prokaryotic. Eukaryotic cells contain many organelles surrounded by a cellular membrane. Animal and plant cells are eukaryotic. Prokaryotic cells do not have a nucleus and many of the other organelles found in eukaryotic cells. Single cell bacteria are an example of a prokaryotic cell. In our cell project we chose twenty seven organelles of an animal eukaryotic cell. Lastly, we chose to make a walled medieval city to represent our cell.
The first organelle that we will discuss is the cell membrane. A cell membrane is a biological membrane that isolates
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It is found in the nucleus of the cell. The nuclear receptor works with other proteins to regulate the expression of specific genes in order to control the development and homeostasis, as well as the metabolism of the organism. It also recognizes and binds with specific molecules. In our model, the nuclear receptor is depicted by the queen.
A few other cell organs are the nuclear pores. They are also found in the nucleus. The nuclear pores are the tiny holes in the cell that regulate the passage of molecules between the nucleus and cytoplasm. They are represented by the castle guards.
The next organelle is the nucleolus. The main components of the nucleolus are RNA, DNA, and proteins. In an animal cell, the nucleolus produces subunits which then forms ribosomes. This organelle is portrayed by the king.
Another organelle in our project is the nuclear membrane or nuclear envelope, which is found on the outside of the nucleus. The function of this organelle is to hold the DNA and other genetic material inside the nucleus in order to protect it from surrounding substances. The nuclear membrane also regulates which substances can enter or exit the nucleus. In our model, the nuclear membrane is depicted by the moat surrounding the
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This organelle is involved in some protein production, as well as protein folding, quality control and despatch. It is called the rough endoplasmic reticulum because it is studded with ribosomes. This organelle is portrayed by the dirt/unpaved roads.
The next cell organ in our cell city project is the smooth endoplasmic reticulum. The main function of the smooth endoplasmic reticulum is to make cellular products, such as lipids and hormones. This organelle also distributes those products throughout the cell, as well as places in the organism. The smooth endoplasmic reticulum also releases and regulates calcium ions. It also processes toxins. It is called the smooth endoplasmic reticulum to distinguish it from the rough endoplasmic reticulum. In our project, it is depicted by the smooth/paved roads.
Another organelle that we chose was the vesicle. The majority contents of a vesicle is water. They control the internal water level and pressure of the cell’s environment. In our project, the food store rooms represents the
The building of the grocery store is like the cell membrane, because it gives it structure and keeps everything inside safe. The security guard of the front door in the grocery store is like the cell membrane, because it says what can come in and out of the cell. The boss of the store is like the nucleus, because they tell the employes what to do and what needs to be done. The floors of the grocery store is like the cytoplasm, because it hold everything in it place, where it need to be. The illes in the store is
Question 1: Briefly describe, in 500 words or less, the normal structure and function of your chosen cell type. In your answer, discuss specific features in your chosen cell type, including cell organelles.
There are many different cells that do many different things. But all of these cells fall into two categories: prokaryotic and eukaryotic cells. Eukaryotic cells contain a nucleus and are larger in size than prokaryotic cells. Prokaryotic cells do not contain a nucleus, are smaller and simpler than eukaryotic cells. Two of their similarities are they both have DNA as their genetic material and are covered by a cell membrane. Two main differences between these two cells are age and structure. It is believed that prokaryotic cells were the first forms on earth. They are considered primitive and originated approximately 3.5 billion years ago. Eukaryotic cells have only been around for about a billion years. There is strong evidence that suggests eukaryotic cells may be evolved from groups of prokaryotic cells that became interdependent on each other (Phenotypic analysis. (n.d.).
parts, and each part has its own job. The nucleus of a cell is very similar
In contrast, eukaryotic organisms typically include (but are not limited to) membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum (E.R.), golgi body, lysosome and peroxisome. The main defining difference between a eukaryote and prokaryote is that the latter does not contain a nucleus or any such organelles. Such a definition, however, can be argued to be a poor discriminator between organisms of Eukarya and Prokarya, because it describes only what prokaryotes are lacking, not what they fundamentally are. This essay aims to detail a more comprehensive definition of why these two kingdoms are so different from each other. A key example of this thinking is that, while prokaryotes are often singly responsible for metabolic processes, reproduction and cell repair, eukaryotes are often highly specialised in order to perform certain functions and rely upon other cells to fulfil different functions. For exa...
The most important and largest cellular organelle is the nucleus, which houses most of the eukaryotic cell’s DNA and is surrounded by a double membrane. The nucleus contains most of the cells genetic material. The nucleus is the control center of the cell.
A)Is incorrect because all cells require ribosomes (Module 14, slide 4) . Ribosomes are important since they make proteins which are part of the basic building blocks of life (Campbell 102).
The nucleus is a organelle that controls all life activities, especially reproduction. In a basketball stadium, the head coach is like the nucleus. The head coach controls everything that happens especially what his team does. This is how the
The nucleus of a cell keeps the cell going as a result of its the mainframe of a cell therefore it controls what happens inside a cell,what the cell will do and the way the cell is going to be used. Found inside of the nucleoplasm, the nucleolus is a consolidated district of chromatin where ribosome manufacturing happens.
Vesicles are a major organelle in the cell. They are really just a group of individual organelles as a whole. These smaller groups of vesicles are a lot harder to tell apart from one another. The vesicles control and also do a lot of the jobs that need to be done in a cell. They have many different jobs depending on what type of vesicle they are. Vesicles are very, very small and were discovered many years later than all of the other organelles in the cell. The vesicles are a very important and also interesting organelle to learn about. In the same ways as it was interesting it is very complex because there are so many different groups and different jobs that they do.
to construct and or maintain the cell membrane. In a microscopic view of the cell membrane we can
The nucleus is often the largest organelle found in a Eukaryotic cell with a size of 10-20 un. It is surrounded by two membrane layers which can be identified on the diagram below. Within the nucleus structure are small pores with a size of 100un in diameter. These pores together make up around one third of the nuclear membrane surface area.
The Animal Cell is a little bit different than the Plant Cell for only a couple of reasons. One is how the Plant Cell has a cell wall and the Animal Cell doesn’t. The cell wall protects and gives structure to the cell. Then there is the Nucleus, which serves as a control center for the cell. Inside the Nucleus there are one or more Nucleoli. They are dense, granular bodies that disappear at the beginning of cell division and reappear at the end. Then you have the Cytoplasm. This is the watery material lying within the cell between the cell membrane and the nucleus. The Cytoplasm also contains organelles, which have specific functions in the cell metabolism. Then there are the Golgi Bodies, which serve as processing, packaging, and storage for the cell. These organelles package and ship things out. Another parts of the cell, a very important one in fact, are the Lysosomes. These organelles are used to break things down and contain enzymes.
Nucleus: It is a double-membraned organelle present in Eukaryotic cells. The nucleus makes most of the cells DNA. It is made up of seven parts, they are the outer membrane, the inner membrane, the nucleoplasm, the nucleolus, the chromatin, the nuclear envelope and the nuclear pore. Some of the main functions of the nucleus are
This report provides an insight into the differences in the structure of cells and the way that they carry out their internal mechanisms. Cells form the basis of all living things and they are the smallest single unit of life. Cell biology is the study of cells and how they function, from the subcellular processes which keep them functioning, to the