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What is lattice energy?

The lattice energy of a crystalline solid is typically defined as the energy of formation of the crystal from infinitely-separated atoms, ions and molecules. The crystalline structure allows each ion to interact with many other oppositely charged ions, which leads to a highly favorable change in the amount of heat content used or released in the system. The strength of the bond between the ions of opposite charge in an ionic compound is determined by the charges on the ions and the distance between the centers of the ions when they combine to form a crystal. The interaction between oppositely ..

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What is the molecular weight of starch?

The monomer has two hydrogens and one oxygen fewer than a typical glucose molecule. This is due to the dehydration reaction between the monomers, which forms a water molecule in the process of forming the bond. Starch is used by plants to hold excess glucose, and in practice, it can hold anywhere from a few hundred to a few hundred thousand glucose monomers.

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What is the structure of an amoeba?

Amoeba is defined primarily by the fact that it consists of a single cell. Because it must sustain itself using only a single cell, an amoeba has many different organelles. Amoebas have cell membranes that allow them to change shape and absorb substances. Their movement is facilitated through the use of pseudopoodium. Their cytoplasm is the home to their chemical reactions. Amoebas use their cytoplasm to consume food. Like all cells, the nucleus of the amoeba keeps and copies its genetic material and allows it to perform cell reproduction. When amoebas replicate, their daughter cells are ident..

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What are the functions of dermal papilla?

A vascular, bulb-shaped structure, the papilla fits snugly into the base or root of each hair strand, as explained by Follicle.com. The papilla supplies hair with nourishment during active growth phases and rests when hair sheds and stops growing. Without the blood, oxygen and nutrients supplied by the papilla, hair growth would be impossible. The papilla is also responsible for transporting protein cells, the building blocks of hair, to the growth site.\nAccording to Follicle.com, the hair-growth cycle has three phases: anagen, catagen and telogen. During the anagen, or growth, phase, hair gr..

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How do I set up a Tasco telescope?

As described by Tasco, the tripod is assembled by loosening the leg screws and pulling the legs out to the desired height, then re-tightening the leg screws. The accessory tray needs to be bolted into the tripod. Next, take the main body of the telescope, and align the hole in it to the yoke of the tripod. Insert the locking knobs into the yoke and telescope. If the telescope comes with a finderscope, fasten the finderscope mounting bracket onto the main body of the telescope by inserting the thumbscrews into the provided holes and tightening. If necessary for the telescope model, insert the d..

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What are some of the differences between acids and bases?

There are additional physical and chemical differences between acids and bases. Acids taste sour while bases have a bitter taste. If a wound comes in contact with an acid, it will produce a stinging pain. Bases feel slippery. Acids react with metals to produce hydrogen gas, and will produce carbon dioxide gas when they react with a carbonate compound. Acids in an aqueous solution will turn litmus test paper red, while bases in an aqueous solution will cause it to turn blue.

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What are the five kingdoms of living things?

Monera includes small, single-celled organisms without a nucleus and includes archaea bacteria, cyanobacteria and mycoplasma. They do not possess a direct feeding structure and obtain nutrients through photosynthesis or by absorption through the cell wall.\nProtista consists of single-celled, mainly aquatic organisms such as diatoms, algae and euglena, as well as protozoans such as amoeba, paramoecium and plasmodium. Some have cell walls, but not all possess them. This group acquires nutrients via photosynthesis or ingestion of other organisms. Protista move via cilia, flagella or amoeboid pro..

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How many biomes exist in the world?

Those that claim that there are five biomes are referring to aquatic, desert, forest, grassland and tundra biomes. These are all broad categories of biomes.\nA person that claims that there are 14 biomes in the world separates the forest category into taiga, chaparral and temperate forest. According to this theory, grasslands are separated into savanna and temperate grasslands. The aquatic category is divided into freshwater, freshwater wetlands, marine, coral reef and estuaries. The alpine category is also included.\nThose that contend that there are nine biomes are only referring to geograph..

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How deep is the Grand Canyon?

The Grand Canyon is so deep that it exposes rock layers, or strata, from the Protozoic and Paleozoic Eras. In fact, the Grand Canyon is deep enough that much of the early geologic history of the continent is recorded in its rock layers. However, it is not the deepest canyon in the entire world. The Grand Canyon's depth is due in part to the Colorado Plateau being uneven, which forces all the runoff from the surrounding mountains into the canyon.

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What information can be found on a mushroom guide?

Despite being the most obvious features of a mushroom, a species' size, color, shape and similar overt characteristics are not especially useful when making an identification. Many mushroom species exhibit remarkable similarity in these features.\nThe structures in which the mushroom stores its spores are vital characteristics mycologists use when making an identification. Most mushrooms store their spores in gills, while others store these reproductive structures in spongy tubes and still others store them on long, dangling teeth.\nA mushroom's spore print color is one of the most u..

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