BBC - Higher Bitesize Biology - Respiration : Revision, Page2
If oxygen is not present to act as the final hydrogen acceptor, the hydrogen cannot pass through the system and complete oxidation cannot take place Page123 Back Next More from Cell biology Links BBC - Science and Nature The natural world and beyond! Links BBC News - Science and Nature Get the latest news on science and nature. This is a system of hydrogen carriers located on the cristae of the mitochondrion and this stage also requires oxygen, which acts as the final hydrogen acceptor: The oxygen and the hydrogen combine to form metabolic or respiratory water
Glycolysis During glycolysis, the potential energy of a primary foodstuff, glucose, is released during a series of chemical reactions which occur in the cytoplasm. During the process, the coenzymes (NADH + H+ and FADH2) which have accumulated during previous processes transfer hydrogen atoms to components of the electron transport chain
While the molecules are being rearranged in this cycle, carbon dioxide is produced, and electrons are pulled off and passed into an electron transport system which, just as in photosynthesis, generates a lot of ATP for the plant to use for growth and reproduction. They conserve water a lot better than we do.Can plants live without animals? Can animals live without plants?Thanks for asking.Click Here to return to the search form
Molecules derived from the breakdown of fats, proteins, and carbohydrates can enter glycolysis or the Krebs cycle at various points in order to yield more energy to an organism. Part A How does oxygen get into or out of chloro- plasts and mitochondria? Part B What are the roles of oxygen in the processes of photosynthesis and cellular respiration, and how are the roles similar? Make sure you get plenty of rest the night before the test
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Already registered? Login here for access 0:00 Cellular Respiration 1:24 The Process 3:51 Formula 4:31 Lesson Summary Timeline Create An Account To Start This Course Today Used by over 10 million students worldwide Create An Account Try it free for 5 days Lesson Transcript Instructor: Kelly Robson Kelly has taught High School Science and Applied Communications. ATP stores energy in a strong bond, and cells can harness this energy by breaking that bond, thereby removing a phosphate group and resulting in ADP, which can then be reconverted to ATP
Photosynthesis 1
In the light reactions, excited electrons from chlorophyll flow through a cytochrome transport system along membranes of the thylakoid disks (thylakoid membranes). When the guard cells lose water pressure on a hot day, they deflate and push together, thus closing off the stoma and reducing water loss (transpiration) through the leaf
ATP and heat production in human skeletal muscle during dynamic exercise: higher efficiency of anaerobic than aerobic ATP resynthesis
This observation of differences in energy turnover between exercise intensities could be due to a difference in recruitment pattern, as glycogen depletion measurements have revealed that type II recruitment increases with increasing exercise intensity (Gollnick et al. Although it is not possible to separate between molar enthalpy values from CP breakdown and glycolysis is seems as if the total heat losses during this dynamic exercise match well with the above-mentioned in vitro values
While many microorganisms can accomplish this task within their single cell, we larger macroorganisms have evolved body organs dedicated to efficiently obtaining enough oxygen -- and eliminating enough carbon dioxide -- to undergo enough aerobic respiration to fuel our large, complex selves. While photosynthesis takes place in the chloroplasts of plant and algae cells, aerobic respiration takes place in the cytoplasm (gooey inner cell space) and mitochondria of all eukaryotic cells
Cell Respiration
Each and every cell in every organism (plant or animal) must have oxygen in order to make ATP so that each cell has the energy available to maintain its complex organization that is essential for that cell to carry out the basic functions required to stay alive. To make the electro leave the atom, you are going to have to add energy to it to make it move away from the positive charges--just like opposite poles of magnets require energy to be pulled apart
Aerobic Cellular Respiration
The objective in this process is to break down glucose and form ATP, NADH and pyruvates (pyruvates or pyruvic acid is the end product of glycolysis, which can be converted to different biomolecules). A point worth mentioning here is, while glycolysis takes place in the cytoplasm of a cell, the Krebs Cycle and electron transport takes place in the mitochondria of a cell
Carbon is the fundamental building block of all the organic compounds needed by living things, including nucleic acids, carbohydrates, proteins and fats. For example, Neisseria meningitidis ferments glucose and maltose, but not sucrose and lactose, while Neisseria gonorrhoea ferments glucose, but not maltose, sucrose or lactose
Cell Respiration: Introduction
Since most textbooks provide abundant details of the chemical reactions in respiration, this tutorial will focus on how the chemical energy in glucose is converted into ATP and where respiration occurs in the cell. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved
Aerobic Respiration - BIOLOGI MEDIA CENTRE
In eukaryotic cells, the electron transport chain and the enzyme ATP-synthase are embedded in the inner membrane of the mitochondrion in folds called cristae. Krebs cycle When pyruvic acid enters the mitochondrial matrix, it reacts with a molecule called coenzyme A to form acetyl coenzyme A, abbreviated acetyl CoA
Weegy: The Krebs Cycle is a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy User: Why is more ATP found in muscle cells than in bone cells? Muscle cells use energy less efficiently than bone cells. Muscle cells power motion, so they have greater energy needs than bone cells.Why is more ATP found in muscle cells than in bone cells? Muscle cells use energy less efficiently than bone cells
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