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The black reaction, also known as the Golgi stain method, is a histological technique used to visualize individual neurons in tissue samples. Developed by Camillo Golgi, it involves the use of silver chromate solution, which selectively stains a small percentage of neurons, allowing for detailed observation of their structure and morphology. This method is particularly valuable in neuroscience for studying neuronal networks and the intricate branching of dendrites and axons. The striking black appearance of the stained neurons against a clear background facilitates their analysis under a microscope.
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What is the purpose of adding iodine solution to the onion cell?
The purpose of adding iodine solution to the onion cell is to stain the cell's starch granules. Starch granules will appear blue-black when iodine solution is added, allowing for easy visualization of the presence of starch in the cell.
An electrolytic cell is different from a voltaic cell because in an electrolytic cell?
In an electrolytic cell, an external power source is needed to drive a non-spontaneous redox reaction, while in a voltaic cell, the redox reaction is spontaneous and generates electric energy. In an electrolytic cell, the anode is positive and the cathode is negative, whereas in a voltaic cell, the anode is negative and the cathode is positive.
What are the proteins that control reactions in a cell?
The proteins that control reaction in a cell are enzymes.
Where does the transition reaction occur in the cell?
cristae
How can a galvanic cell become an electrolytic?
the redox reaction is reserved
Why do the cell walls of onions turn blue-black when put with iodine?
The blue-black color change occurs due to the reaction between iodine and starch present in the onion cell walls. When iodine comes in contact with starch, it forms a complex that absorbs light in the visible spectrum, giving the characteristic blue-black coloration.
When did Immediate Reaction Cell end?
Immediate Reaction Cell ended in 2010.
When was Immediate Reaction Cell created?
Immediate Reaction Cell was created in 1952.
What must be the sign of the standard cell potential (cell) for a redox reaction to be spontaneous?
For a redox reaction to be spontaneous, the standard cell potential (cell) must be positive.
When a cell uses chemical energy to perform work it couples a reaction with a reaction?
When a cell uses chemical energy to perform work, it couples an exergonic (energy-releasing) reaction with an endergonic (energy-requiring) reaction. This coupling allows the cell to harness the energy released from the exergonic reaction to drive the endergonic reaction, enabling the cell to perform work such as transport, mechanical movement, or synthesis of molecules.
Is free energy of cell reaction positive when emf of cell reaction is positive?
No, the free energy of a cell reaction is negative when the emf of the cell reaction is positive. This is because a positive emf indicates that the reaction is spontaneous and capable of performing work, resulting in a negative change in free energy.
What is the difference between an e cell and an e0 cell in electrochemistry?
An E cell is the actual cell potential measured during a chemical reaction, while E cell is the standard cell potential under specific conditions. E cell can vary based on the reaction conditions, while E cell is a constant value for a specific reaction at standard conditions.
Is the cell always positive in an electrochemical reaction?
In an electrochemical reaction, the cell can be positive or negative, depending on the direction of electron flow.
What does a positive cell voltage mean?
The reaction is spontaneous.
What is the purpose of adding iodine solution to the onion cell?
The purpose of adding iodine solution to the onion cell is to stain the cell's starch granules. Starch granules will appear blue-black when iodine solution is added, allowing for easy visualization of the presence of starch in the cell.
What is the purpose of the reaction in a cell?
z
How can a galvanic cell become a electrolytic cell?
The Redox Reaction Is Reversed
