Friday, May 15, 2020

Cell Organelles And Structures - 2117 Words

tion of Cell Organelles Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer of phospholipid molecules. Within the cell surface membrane, the intracellular space known as the cytoplasm, contains all the organelles and a fluid known as cytosol. Within the cytosol is a network of microtubules and fibres called the cytoskeleton. This cytoskeleton’s main functions are to give support to the cell helping to maintain its shape and aid the movement of organelles. Most cell organelles and structures are common to both animal and plant cells but there are some differences as outlined in the table below and as seen in fig. 1 and fig. 2. Organelles + structures Present in animal cells Present in plant cells Cell surface membrane Yes Yes Cytoskeleton Yes Yes Nucleus Yes Yes Endoplasmic reticulum Yes Yes Ribosomes Yes Yes Golgi body Yes Yes Mitochondria Yes Yes Lysosomes Yes Rarely Centrioles Yes Not in higher plants Cell wall No Yes Chloroplasts No Yes Vacuole No Yes Animal Cell (Fig.1) PlantShow MoreRelatedThe Structure And Function Of Cell Organelles1763 Words   |  8 PagesThe Structure and Function of Cell Organelles Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer ofRead MoreStructure and Function of Eukaryotic Cell Organelles1800 Words   |  8 PagesStructure and Function of Eukaryotic Cell Organelles What are eukaryotic and prokaryotic cells? Organelles in Eukaryotic Cells The Nucleus. Nearly all animal cells have a nucleus, with the only exception being the red blood cell. The nucleus has two major functions, which are housing the DNA and controlling the cell’s activities. In the centre of the nucleus is the nucleolus. This doesn’t have a membrane, but holds itself together. In the nucleolus, ribosomes are created through the mixtureRead MoreThe Structure And Function Of Organelles Within A Eukaryotic Cell Essay1376 Words   |  6 PagesThe Structure and Function of Organelles within a Eukaryotic Cell The Structure of the Membrane and its Function in Cell Transport The essence of life begins with knowing that all living things are made from cells. Cells and what is contained inside form the basic unit of structure and function in an organism. All cells have the same basic structure, the vital part being organelles. The name organelle comes from the Latin organellea; which means little organ. They can be found in both eukaryoticRead MoreEukaryotic Cells And Its Functions978 Words   |  4 Pagesâ€Å"Eukaryotic cells are complex and include all animal and plant cells. Prokaryotic cells are smaller and simpler, e.g. Bacteria† - (AQA 2008) Eukaryotic cells contain membrane-bound organelles, whereas prokaryotic cells do not contain these. Although both of these cells contain DNA, only eukaryotic cells contain a nucleus. The nucleus is the largest organelle, surrounded by a double membrane (nuclear envelope) containing lots of pores. The nuclear membrane protects contents of the nucleus and controlsRead MoreDifference Between Plant And Animal Cells1309 Words   |  6 Pages CELL OBSERVATION LAB By Alexandra Escaja-Heiss, Ashley Reeves, Christine Constant Period G1/B3a - Living Systems 10/22/15 Purpose To identify the difference between plant and animal cells, recognize their structures, and to better understand the various functions of those cell organelles. II. Background In 1665 Robert Hooke used an early light microscope to look at a thin slice of cork. Under the microscope the cork looked to have thousands on empty chambers, whichRead MoreTypes Of Cells And Prokaryote And Eukaryote1480 Words   |  6 Pagesare two types of cells; Prokaryote and Eukaryote. They have many differences including their structures and functions. The main difference being that a Eukaryote cell has an organised nucleus with a nuclear envelope, whereas a prokaryote cell does not have a nucleus at all. Eukaryotes are much more complex than a prokaryote cell. They have multiple organelles with many different functions. Eukaryotic cells are bigger in size than Prokaryotic cells. Some examples of eukaryotic cells are: animals, plantsRead MoreA Comparison of Eukaryotic and Prokaryotic Cells Essay1304 Words   |  6 PagesA Comparison of Eukaryotic and Prokaryotic Cells There are two main types of cells in the world. The simplest cells such as bacteria are known as Prokaryotic cells, and human cells are known as Eukaryotic cells. The main difference between each of these cells is that a eukaryotic cell has a nucleus and a membrane bound section in which the cell holds the main DNA which are building blocks of life. Prokaryotic cells do not have a nucleus. The chromosomes which are found in prokaryotes are usuallyRead MoreCell Lab Report1076 Words   |  5 Pagesï » ¿STRUCTURE AND FUNCTION OF LIVING CELLS Name Answer the following questions as you work your way through the lab material typing in your answers. Then submit your completed lab report through the â€Å"Assignment† feature. This lab report is worth 50 points towards your final lab grade. Also, per the Honor Code, this work must be your own. CELLS Using your Biology Textbook answer the following questions. 1. What types of organisms are Prokaryotes? The Prokaryotes are organisms that areRead MoreMiddle School El Students- Carlos986 Words   |  4 Pagesof a cell as a whole and ways parts of cells contribute to the function. ïÆ'Ëœ SWBAT: Students will be able to identify the different parts of a plant and animal cell ïÆ'Ëœ SWBAT: Students will be able to describe/ define the function of the parts of a cell ïÆ'Ëœ SWBAT: Students will create a model of a cell. WV ELP Standards: 1, 2, 5, 7 Language Objectives: ïÆ'Ëœ SW be able to orally describe the structure and function of a cell to a partner ïÆ'Ëœ SW define and use scientific terms for cells, organelles, andRead MoreAnimal Cells And Their Functions1044 Words   |  5 PagesAnimal cells and their functions Cell Membrane The cell â€Å"surface† membrane is a semi-permeable membrane whose function is to control the exchange of substances between the cell and its environment. Semi-permeable means that only certain molecules are allowed to be transported in and out of the cell. The membrane is mainly made up of Lipid and protein. On the diagram, the Cell Membrane forms the â€Å"outer shell† of the animal cell, and can be seen as the bold line around it. Nucleus The Nucleus has a

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.