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A dry cell is a chemical device that produces electricity by a chemical reaction contained in a sealed container. Its contents are not liquid, hence the name "dry" cell. An example is a common flashlight battery or "D-Cell" or "AA-Cell", etc. Those are examples of a carbon rod enclosed in a zinc case and separated from the case and surrounded by a damp mixture of manganese dioxide powder. It is a "Primary Cell" meaning it cannot be recharged once it is depleted. An accumulator, once known as a condenser, is now known by the name "capacitor". It has no chemistry, at least not to react to form electricity. The simplest types are two metal plates separated by a "dielectric" or "insulator". When one plate is connected to the plus side of a battery or power supply, and the other plate is connected to the negative side of the battery or power supply, the capacitor charges up to whatever the battery voltage is, e.g., 1.5 volts DC. When the battery is removed the capacitor stores that charge and holds it for some time (it eventually leaks off). While the capacitor is charged, i.e., has voltage across its two plates or two terminals, it can act as a source of power, just like a battery. However as soon as some current is withdrawn from the capacitor, its voltage decreases, leading to lower capacity to deliver current until eventually its voltage goes to zero. A battery or dry cell can deliver current at a slowly decreasing voltage for an hour or more, depending on the load it is driving. An accumulator or capacitor might deliver current only for a fraction of a second. It can be discharged very quickly since it doesn't store that much charge to begin with, and has no chemical reaction to continue producing electricity.
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What are the differences and similarities between onion and elodea cells?
similarities: cell wall present, cytoplasm, both eukaryote. difrences: elodea cell smaller vacuoles chloroplasts present unicellular onion cell: large vacuoles multicellular
What are the similarities between a plant and a chemical cell?
they both have mebranes and cell walls
What is the similarities between a wet cell battery and a dry cell battery?
Some of the similararities between wet cell batteries and dry cell batteries include: * Multiple cells. * A container such as a case or housing. * Positive and negative electrodes. * An electrolyte. * The ability to produce of electricity in the form of Direct Current [DC].
One similarity between cell receptors and antibodies is that both?
highly specific
One similarity between cell receptors and antibodies is?
Are highly specific in their actions
What is differences between prokryotes and eukryotes?
has a cell membrane
What are the 2 differences between an animal cell and a plant cell?
cell wall, central vacuole, and chloroplasts
What are the differences between elodea cell and a paramecium cell?
the differences between the paramecuim cell and the elodea cell is that paramecuim- hunt for food, live by itself, single cell creature. elodea- make their onw food, cannot live alone, multicullar cells. (lots of cells)
What are the differences and the similarities between the plant and animal cell?
Animal cells have no cell Walls and plant cells have a cell wall
What are the main differences between plants and animals cells?
the plant cell is round and the animal cell is squered
What is the major similarity and the major differences between cellular respiration and photosynthesis?
That it have cell
What does cell diversity mean?
Cell diversity refers to the wide variety of cells and the differences between various cells.
What are the main differences between plant cells and animal cells?
the plant cell is round and the animal cell is squered
How does the cancer cell cycle differ from a normal cell cycle, and can you explain the specific differences between the two?
In cancer cells, the cell cycle is disrupted, leading to uncontrolled growth and division. This results in the formation of tumors. Normal cells, on the other hand, follow a regulated cell cycle with checkpoints to ensure proper division and growth. The specific differences between the two include the loss of cell cycle control in cancer cells, leading to rapid and uncontrolled proliferation, as well as the ability of cancer cells to evade cell death mechanisms that would normally eliminate abnormal cells.
How are the structures that have similar functions alike and different among plants and animals?
the differences between an animal cell and a plant cell is that an animal cell has a cell membrane and a plant cell has a cell wall.
Explain the relationship between cell surface area and volume as a cell grows larger?
As the volume of a cell grows, the surface area grows but not as quickly.
What is the difference between plants cell and animal cell in cell division?
There are not many differences between animal and plant cell division, only that when it comes time for the cell to divide during cytokinesis, the plant cell grows a cell plate in between the two nuclei, and the animal cell forms a cleavage furrow (like the cell is being pinched) and divides.
