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Compare and contrast light dependent and light independent reactions of photosynthesis.?
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∙ 10y ago
Light dependent reactions : The first stage of the photosynthetic system is the light-dependent reaction, which converts solar energy into chemical energy.
The light dependent reaction produces oxygen gas and converts ADP and NADP+ into the energy carriers ATP and NADPH.
In plants, light dependent reactions occur in the thylakoid membranes of the chloroplasts and use light energy to synthesize ATP and NADPH. The light dependent reaction has two forms; cyclic and non-cyclic reaction. In the non-cyclic reaction, the photons are captured in the light-harvesting antenna complexes of photosystem II by chlorophyll and other accessory pigments.The cyclic reaction takes place only at photosystem I. Once the electron is displaced from the photosystem, the electron is passed down the electron acceptor molecules and returns back to photosystem I, from where it was emitted; hence the name cyclic reaction.
Light-independent reaction : In photosynthesis, the light-independent reactions, also somewhat misleadingly called the dark reactions (they don't require darkness, but they do require the products of the light reactions), are chemical reactions that convert carbon dioxide and other compounds into glucose. It occurs in the stroma, the fluid filled area of a chloroplast outside of the thylakoid membranes. These reactions, unlike the light-dependent reactions, do not need light to occur; hence the term dark reactions. These reactions take the products of the light-dependent reactions and perform further chemical processes on them. There are two light-independent reactions: carbon fixation and the Calvin-Benson cycle.
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∙ 10y ago
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Compare and contrast the functions of photosynthesis and respiration. Explain the relationship between the processes.?
photosynthesis and respiration are linked because they both involve the exchange of the gases; oxygen and carbon dioxide.
What are the similarities between density-dependent factors and density- independent factors?
Density dependent factors are factors that depend of the population (density). Such as food, water, and space Density Independent factors are factors that the population (density) depends on. Such as weather, natural disasters and random occurances.
Compare and contrast photosynthesis and chemosynthesis?
Chemosynthesis gets its energy from oxidation of inorganic substance, photosynthesis gets its energy from light. Chemosynthesis could occur just about anywhere there are enough suitable chemicals to oxidize [metabolize], while photosynthesis could occur only when there is sufficient light.
Why would you use an irrigation staining technique opposed to direct application of iodine?
An irrigation staining technique is used to increase the contrast of soft tissue structures on an imaging study. This is done by injecting a contrast agent into the tissue. The contrast agent is typically iodine-based. Iodine-based contrast agents can be irritating to the tissue and can cause inflammation. This can lead to increased pain and discomfort for the patient. Additionally, iodine-based contrast agents can cause allergic reactions in some patients. An irrigation staining technique can help to minimize these side effects by diluting the contrast agent and evenly distributing it throughout the tissue. This can help to improve the comfort of the patient and increase the safety of the procedure.
Where does the most reactions of aerobic cellular respiration occur?
Glycolysis, the first stage of aerobic respiration, occurs in a cell's cytoplasm. The second stage (acetyl-CoA formation and the Krebs cycle) and the third stage (electron transfer phosphorylation) occur inside a cell's mitochondria. They occur at the inner mitochondrial membrane, which is highly folded. Therefore, most of the reactions of aerobic cellular respiration occur inside the mitochondria of a cell.
What are some facts about independent and dependent variable?
An independent variable is a variable which, in the context of the experiment or the observations, can affect the dependent variable but is not affected by it. By contrast, the dependent variable is affected by changes in the independent variable. It is quite possible that there is no independent variable, as such, and each variable affects the other.
A variable measured in an experiment?
The variable measured in an experiment is called the dependent variable" the outcome factor". In contrast, the independent variable is the experimental factor that is manipulated; the variable who effect is being studied.
What does the science Dependent variable mean?
The dependent variable in a scientific experiment refers to the variable that is being measured or observed to determine the effect or relationship with the independent variable. It is called "dependent" because its value is believed to depend on the changes made to the independent variable.
Compare and contrast the functions of photosynthesis and respiration. Explain the relationship between the processes.?
photosynthesis and respiration are linked because they both involve the exchange of the gases; oxygen and carbon dioxide.
What are the similarities between density-dependent factors and density- independent factors?
Density dependent factors are factors that depend of the population (density). Such as food, water, and space Density Independent factors are factors that the population (density) depends on. Such as weather, natural disasters and random occurances.
Compare and contrast between exergonic and endergonic reactions?
Exergonic vs. Endergonic reactions: exergonic release more energy than they absorb. Endergonic reactions absorb more energy than they release.Exergonic reactions release energy while endergonic reactions absorb energy.
Compare and contrast mitochondria and plastic?
the mitochondria is the vital activities of the cell while plastids are manufacture in food photosynthesis.
What are obligate parasites?
A parasite that cannot lead an independent nonparasitic existence, in contrast to facultative parasite.
How do you create simple sentence?
1. A simple sentence contains a single independent clause: one single or compound subject and one single or compound verb, for example: "The dog and cat ran around the house." "Dog and cat" is a compound subject. "Ran" is a single verb. 2. In contrast, a compound sentence contains two independent clauses linked together by a conjunction, for example: "The dog and cat ran around the house, but they didn't break anything." The first independent clause is "The dog and cat ran around the house" and the second independent clause is "they didn't break anything" and these two clauses are linked by the conjunction "but". 3. Lastly, a complex sentence contains at least one independent clause and at least one dependent clause, for example: "The dog and cat ran around the house because they were full of energy." The independent clause is "The dog and cat ran around the house", and the dependent clause is "because they were full of energy." The second clause is "dependent" on the first for full meaning.
Contrast dependent and independent variables?
Dependant variable: the variable you measure in an experiment. It changes due to external factors affecting it. It can be time taken, or distance traveled... ect. Independant variable: the variable you change in an experiment. It can be the amount of time, or concentration of a substance... ect. Generally continuous variables, though not always.
Compare and contrast producers and consumers?
Producers are organisms that make their own food through photosynthesis or other reactions and are a food source for other organisms (e.x. plants, extremophile benthos communities). Consumers are organisms that ingest other organisms, like plants, in order to gain energy (e.x. herbivores, carnivores, omnivores, detrivores).
What is the Differences between dependent and in dependent variables?
Dependent part instancesBy default, Abaqus/CAE creates a dependent instance of a part. A dependent instance is only a pointer to the original part. In effect, a dependent instance shares the geometry and the mesh of the original part. As a result, you can mesh the original part, but you cannot mesh a dependent instance. When you mesh the original part, Abaqus/CAE applies the same mesh to all dependent instances of the part. Most modifications are not allowed on a dependent part instance; for example, you cannot add partitions or create virtual topology. However, operations that do not modify the geometry of a dependent part instance are still allowed; for example, you can create sets, apply loads and boundary conditions, and define connector section assignments. If you have already meshed a part or added virtual topology to the part, you can create only a dependent instance of the part.If you apply an adaptive remeshing rule to a dependent part instance in the Mesh module, Abaqus/CAE remeshes the original part and applies the new mesh to each dependent instance of the part.You cannot change the mesh attributes of an individual dependent part instance; for example, the mesh seeds, mesh controls, element types, and the mesh itself. However, you can change the mesh attributes of the original part, and Abaqus/CAE propagates the changes to all dependent instances of the part. Although you have already meshed the original part and applied the same mesh to its dependent instances, the mesh is visible only in the Mesh module. You continue to work with the native Abaqus/CAE geometry in the Assembly, Interaction, and Load modules.The advantages of dependent part instances are that they consume fewer memory resources and you need mesh the part only once. In addition, Abaqus/CAE instances a dependent part instance in the input file by writing a single set of nodal coordinates and element connectivity to define the part along with a transform to define each part instance.Independent part instancesIn contrast, an independent part instance is a copy of the geometry of the original part. You cannot mesh a part from which you created an independent part instance; however, you can mesh the independent instance. In addition to meshing, you can perform most other operations on an independent instance; for example, you can add partitions and create virtual topology. The disadvantages of independent instances are that they consume more memory resources, and you must mesh each independent instance individually. In addition, Abaqus/CAE does not take advantage of instantiation in the input file with independent part instances-sets of nodal coordinates and element connectivity are written to the input file for each independent part instance.
