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Why is the citric acid cycle a cyclic pathway rather than a linear pathway?
Wiki User
∙ 11y ago
The citric acid cycle is a cyclic pathway rather than a linear pathway because it is easier to remove electrons and produce CO2 from compounds with three or more carbon atoms that form a two-carbon compound such as acetyl CoA.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoThe Krebs cycle is also known as the Citric Acid Cycle or Tricarboxylic Acid Cycle and was named after Hans Krebs who discovered it. It is used to oxidize pyruvates formed when glucose is broken down into Carbon Dioxide and Water. It is cyclic because it is a repetitive cycle.
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What is the general term for lipids synthesized from isoprene units?
Terpenes are derived biosynthetically from units of isoprene, which has the molecular formula C5H8. The basic molecular formulae of terpenes are multiples of that, (C5H8)n where n is the number of linked isoprene units. This is called the isoprene rule or the C5 rule. The isoprene units may be linked together "head to tail" to form linear chains or they may be arranged to form rings. One can consider the isoprene unit as one of nature's common building blocks.Isoprene itself does not undergo the building process, but rather activated forms, isopentenyl pyrophosphate (IPP or also isopentenyl diphosphate) and dimethylallyl pyrophosphate (DMAPP or also dimethylallyl diphosphate), are the components in the biosynthetic pathway. IPP is formed from acetyl-CoA via the intermediacy of mevalonic acid in the HMG-CoA reductase pathway. An alternative, totally unrelated biosynthesis pathway of IPP is known in some bacterial groups and the plastids of plants, the so-called MEP(2-Methyl-D-erythritol-4-phosphate)-pathway, which is initiated from C5-sugars. In both pathways, IPP is isomerized to DMAPP by the enzyme isopentenyl pyrophosphate isomerase. Dimethylallyl pyrophosphateIsopentenyl pyrophosphate
Why do chemists prefer to read the absorbance rather than the percent transmittance of lght when analyzing a sample having a visible color?
Because when you graph a molar concentration vs. absorbance graph, the graph is linear, making the graph easier to read.
What is the advantage of using a metabolic pathway to burn glucose?
1. the energy is released gradually, which allows a significant amount of the released energy to be conserved for the cell to use rather than being lost as heat. 2. additionally, the process generates intermediate compounds into the metabolic pathways (divert surplus intermediate compounds into the metabolic pathways that best meet the organism's constantly changing needs)
What is the purpose of the hatch-slack pathway?
C4 fixation is an elaboration of the more common C3 carbon fixation and is believed to have evolved more recently. and CAM overcome the tendency of the enzyme RuBisCoto wastefully fix oxygen rather than carbon dioxide in what is called photorespiration. This is achieved by using a more efficient enzyme to fix in mesophyll cells and shuttling this fixed carbon via malate or asparate to bundle-sheath cells. In these bundle-sheath cells, RuBisCO is isolated from atmospheric oxygen and saturated with the released by decarboxilation of the malate or oxaloacetate. These additional steps, however, require more energy in the form of ATP. Because of this extra energy requirement, plants are able to more efficiently fix carbon in only certain conditions, with the more common pathway being more efficient in other conditions.
How much ATP can be obtained from one glycerol and three 12 carbon chains?
The http://www.answers.com/topic/oxidative breakdown of fatty acids occurs in mitochondria through a series of reactions known as beta-oxidation. Fatty acids are rich sources of energy; 44 moles of ATP are generated by the complete oxidation of 1 mole of a six-carbon fatty acid, whereas only 38 moles of ATP are generated from 1 mole of http://www.answers.com/topic/glucose, a six-carbon sugar. Glucose is broken down to pyruvate, or pyruvic acid, by way of the glycolytic pathway. Glycolsis process changes one molecule of glucose into two molecules of pyruvate, and makes energy in the form of two net molecules of ATP. There is a net gain of two ATPs per glucose molecule. Four molecules of ATP per glucose are actually produced; however, two are consumed for the preparatory phase. The initial phosphorylation of glucose is required to destabilize the molecule for cleavage into two triose sugars. During the pay-off phase of glycolysis, four phosphate groups are transferred to ADP by substrate-level phosphorylation to make four ATP, and two NADH are produced when the triose sugars are oxidized . There is a net gain of two ATPs per glucose molecule. In short, glucose is a 6 carbon sugar that gets broken down into two 3 carbon compounds. The enzymes of this pathway occur in the cytoplasm of cells, outside the mitochondria. Much more energy, a total of 34 ATPs, depending on how you add them up, is obtained from the complete oxidation of glucose to carbon dioxide and water. This more complete breakdown is accomplished by enzymes of the KREB'S CYCLE. The key features are that acetyl Coenzyme A, formed by the decarboxylation of pyruvic acid, enters the cycle by joining the 2-carbon acetyl unit to a 4-carbon compound to create the 6-carbon citric acid and there is no real end point because of the cyclic nature of the pathway. Rather, carbon dioxide is created at two points in the cycle by decarboxylations and electron carriers become loaded with electrons at 4 points in the cycle. Finally, the equivalent of 1 ATP is generated with each round of the cycle. The enzymes for the decarboxylation of pyruvate to acetyl CoA and the enzymes of the citric acid cycle are all located in the matrix of the mitochondria.
Is meiosis cyclic or non cyclic?
Meiosis is not cyclic; rather it is a linear process. It does not cycle.
What is a cyclic hydrocarbon?
It is a ring formed carbon skeleton. The smallest possible cyclic hydrocarbon is cyclopropane (triangular C3H6) together with cyclobutane both being rather unstable (degration to linear propene and 1-butene). Five and six membered rings are quite common. The most 'famous' cyclic hydrocarbon is the aromatics-group of benzene, which is the cyclic 'honeycomb' formed 1,3,5-cyclohexatriene C6H6 (and derivatives).
Is the ATP cp pathway considered the aerobic pathway?
no, it is anaerobic metabolism. (without oxygen, rather than with oxygen.)
Do dried cranberries have a lot of a acid in them?
Yes, they are rather highly acidic. Mostly malic acid and citric acid.
Is pathway a sensory word?
No, "pathway" is not typically considered a sensory word since it primarily conveys a physical or metaphorical route or direction rather than appealing to the senses like taste, touch, sight, smell, or sound.
How do you tell whether the relationship between two variables is linear?
By definition, if you graph the relationship between two variables and the result is a straight line (of whatever slope) that is a linear relationship. If it is a curve, rather than a straight line, then it is not linear.
How does enzymes speed up chemical reactions?
The way enzymes speed up chemical/biochemical reactions is the same way that catalysts work. They provide an alternate pathway for the reaction which has a LOWER activation energy. They don't actually decrease the activation energy of the pathway in question, but rather they provide a different pathway that has a lower energy of activation.
What digestive path would a piece of steak take?
Because steak is red meat, it takes what biochemists refer to as the 'red pathway', the 3rd of 4 pathways in the human digestive system. The red pathway is unfortunately the closest to the urinary pathway, and so sometimes red-meat by-products (after eating) are passed out through urine, rather than through 'normal' methods.
What is the equivalent of linear yards?
If you buy something sold in linear yards, then it will be a role of material (or carpet etc) that is sold by a length as it comes off the roll rather than by its area measurement.
What is synaestheia?
Why on earth did you post this as a question, waiting days or weeks for an answers, rather than just typing it into google? There is no such word. But synesthesia is a neurologically-based phenomenon in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway.
What is the application of feedback amplifier?
A: feedback is not an application but rather is a must to keep a system or amplifier stable in the linear regions
How do you find the answer to an integer problem?
It depends on the problem: you may have to use integer programming rather than linear programming.
