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Essay on endosymbiotic theory
Mitochondria and Chloroplasts Similarities
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1. Lynn Margulis developed the theory of endosymbiosis.
2. Endosymbiosis is when one organism symbiotically lives inside another organism.
3. According to this theory, mitochondria evolved from a bacteria that causes typhus.
4. This theory says that chloroplasts came from cyanobacteria.
5. The genetic resemblance of mitochondria and chloroplasts to certain bacteria supports the endosymbiosis theory. The DNA within mitochondria and chloroplasts is also different than the DNA of the cell.
6. The main function of mitochondria is to convert the every from food into a kind of energy that the cell are able to use.
7. Mitochondria also regulate the self-destruction of cells and produce cholesterol and a component of hemoglobin called heme.
8. There are 37 genes found in mitochondria.
9. These genes produce enzymes used in oxidative phosphorylation and provide instructions for making transfer RNA and ribosomal RNA.
10. a. The number of mitochondria per cell depends on how much energy that cell is using.
b. The outer membrane and the inner membrane of mitochondria function very sim...
The ATP is used for many cell functions including transport work moving substances across cell membranes. It is also used for mechanical work, supplying the energy needed for muscle contraction. It supplies energy not only to heart muscle (for blood circulation) and skeletal muscle (such as for gross body movement), but also to the chromosomes and flagella to enable them to carry out their many functions. A major role of ATP is in chemical work, supplying the needed energy to synthesize the multi-thousands of types of macromolecules that the cell needs to exist. ATP is also used as an on-off switch both to control chemical reactions and to send messages.
Animal metabolism consists of the utilization of nutrients absorbed from the digestive tract and their catabolism as fuel for energy or their conversion into substances of the body. Metabolism is a continuous process because the molecules and even most cells of the body have brief lifetimes and are constantly replaced, while tissue as a whole maintains its characteristic structure. This constant rebuilding process without a net change in the amount of a cell constituent is known as dynamic equilibrium (Grolier1996). In the combustion of food, oxygen is used and carbon dioxide is given off. The rate of oxygen consumption indicates the energy expenditure of an organism, or its metabolic rate (Grolier1996).
Eukaryotic Cells are Deemed as a Result of the Evolution of Symbiotic Prokaryotes Both Prokaryotic and Eukaryotic cells over time have sustained very dynamic changes from one another. More specifically we have seen the appearance of a more complicated and organized cell structure, the nucleus. However the big question amongst scientists today is how did these changes first occur? A fundamental concept of this evolution is the belief in the natural progression 'from the simple, to the more complex.' However one popular theory that argues that Prokaryotic symbiosis was responsible for forming the Eukaryotic nucleus is the 'Endosymbiotic Theory' this theory was first proposed by a former Boston University Biologist known as Lynn Margulis in the 1960's.
During her presentation, Bonnie Bassler expends many different aspects of communication in a bacterial level and how successful communication is important to survival and efficient functioning. It is evident from her presentation that without a common language to communicate with, bacteria could not work as efficiently as they do, neither to immunize people nor create havoc in them. In her presentation, Bassler asserts the importance of the use of language in communication in bacteria, using rhetorical appeals – logical, ethical and emotional – and how it is consequently related to humans.
The mitochondria produces food for the cell by converting energy the cell needs. The mitochondria and the nucleus are two organelles within a cell that have many of the same similarities. Both organelles are made of two membranes. These layers isolate within the organelle all things considered, yet have protein channels that permit things to go in and out. Both contain DNA material that conveys qualities that encode for proteins. Both have qualities that make ribosomes, the machines that read the guidelines in RNA to make
The organelle responsible for energy production in the cell is the mitochondria. Eukaryotic cells contain or have mitochondria. For the body to function all humans have mitochondria which makes living possible.
for a cell to function as part of cellular respiration. ATP is needed to power
Our metabolism, “the totality of an organism’s chemical reactions”, manages energy usage and production of cells. We use energy constantly and our metabolism breaks down food through complex chemical reactions into energy our cells
The mitochondria is an organelle which is generally an oval shape and is found inside the cytoplasm and is again apart of the eukaryotic cells. The main function of the mitochondria is to complete cellular respiration; in simple terms it acts like a digestive system to break down essential nutrients and to convert it into energy. This energy is usually found to in ATP which is a rich molecule taken from the energy stored in food. Furthermore, mitochondria stores calcium for signalling activities; such as heat, growth and death. They have two unique membranes and mitochondria isn’t found in human cells like the red blood cells yet liver and muscle cells are filled entirely with mitochondria.
...y is generated, that energy being ATP. It is a folded membrane inside a membrane. The mitochondria looks a lot like a bacteria, and thats because scientists think that they became parts of our cells through endosymbiotic theory. In other words, they became parts of the cell, they produce ATP for that cell and then they get a place to live. Evidence supporting this theory being the fact that the mitochondria produces its own DNA through binary fission. The lysosome has sometimes been coined as the suicide sac. Lysosomes has digestive enzymes inside it that is contained within a membrane. A lysosome could go next to a vesicle that has material that we want to break down and those digestive enzymes will go in there and break it down. Lysosomes gets its name from when it pops the digestive enzymes would go throughout the cell and would kill the cell, dissolve the cell.
Energy production- The most important function of mitochondria is energy production in the form of ATP. The raw materials are food materials and tissues which are broken down in catabolism. These molecules transferred to mitochondria for further processes. In inner membrane they have electrical charges then they help in producton of ATP (Phosphorylaton) by combine with oxygen (Oxidaton) through five electron transport chain complexes. So this overall
Leboffe, M. J., & Pierce, B. E. (2010). Microbiology: Laboratory Theory and Application, Third Edition 3rd Edition (3rd Ed.). Morton Publishing
Distinct characteristics are not only an end result of the DNA sequence but also of the cell’s internal system of expression orchestrated by different proteins and RNAs present at a given time. DNA encodes for many possible characteristics, but different types of RNA aided by specialized proteins sometimes with external signals express the needed genes. Control of gene expression is of vital importance for an eukaryote’s survival such as the ability of switching genes on/off in accordance with the changes in the environment (Campbell and Reece, 2008). Of a cell’s entire genome, only 15% will be expressed, and in multicellular organisms the genes active will vary according to their specialization. (Fletcher, Ivor & Winter, 2007).
Microbes are microscopic life forms, usually too small to be seen by the naked eye. Although many microbes are single-celled, there are also numerous multi-cellular organisms. The human body has 10-100 trillion microbes living on it, making it one giant super-organism. Since the first link between microbes and diseases was made, people have been advised to wash their hands. Scientists, however, have recently started to investigate more closely how the microbes that call the human body home affect our health. While some microbes cause disease, others are more beneficial, working with our bodies in many subtle ways.
They generate most of the energy in the cell but are also part of cell growth. Mitochondria also affect human health with mitochondrial disorder and cardiac dysfunction. Some of its functions include making energy for the cell, regulate the number of calcium ions in a cell and help build hormones such as testosterone and estrogen. They make energy by receiving nutrition molecules to be processed, thus charging them and then combining them with