Categories :

What is desiccation in biology?

What is desiccation in biology?

In biology, desiccation is the drying out of an organism by removing water or extracting moisture. This is what occurs when an aquatic organism is taken out of their habitat or when a vulnerable organism is exposed to a desiccating agent, such as earthworm that is exposed to salt.

What is desiccation in chemistry?

DESICCATION (from the Lat. desiccare, to dry up), the operation of drying or removing water from a substance. It is of particular importance in practical chemistry. Liquids are dried either by means of the desiccator, or, as is more usual, by shaking with a substance which removes the water.

What is the difference between dehydration and desiccation?

As nouns the difference between desiccation and dehydration is that desiccation is (uncountable) the state or process of being desiccated while dehydration is the act or process of freeing from water; also, the condition of a body from which the water has been removed.

What is desiccation in a cell?

Thermal desiccation refers to the event of the drying out of a cell, also known as dehydration. At temperatures of up to 100°C intra- and extracellular water dehydrates causing cells to dry out and shrink.

Where is desiccation used?

Desiccation is widely employed in the oil and gas industry. These materials are obtained in a hydrated state, but the water content leads to corrosion or is incompatible with downstream processing.

What kinds of creatures could tolerate desiccation?

However, there are species of animals, plants, and microbes that do tolerate complete desiccation. Among animals, desiccation tolerance is common in three phyla: nematodes (Wharton, 2003), rotifers (Ricci, 1998; Ricci and Carprioli 2005), and tardigrades (Wright et al., 1992; Wright, 2001).

How do humans prevent desiccation?

The most important finding is that vacuum greatly enhances the ability of human cells in culture to withstand desiccation. In fact, cells dried slowly and stored under vacuum are able to withstand desiccation even in the absence of added carbohydrates or polyols.

What causes desiccation?

Disc desiccation is usually caused by wear and tear on your spine, which happens naturally as you age. Several other things can also cause disc desiccation, such as: trauma from a car accident, fall, or sports injury. repeated strain on your back, especially from lifting heavy objects.

Is bacteria sensitive to desiccation?

In the air-dried state some bacteria survive only for seconds whereas others can tolerate desiccation for thousands, perhaps millions, of years. The desiccated (anhydrobiotic) cell is characterized by its singular lack of water–with contents as low as 0.02 g of H2O g (dry weight)-1.

Which bacteria is resistant to desiccation?

The majority of isolates were closely related to members of the genus Deinococcus, with Chelatococcus, Methylobacterium and Bosea also among the genera identified. Desiccation-resistant isolates accumulated high intracellular manganese and low iron concentrations compared to sensitive bacteria.

How do organisms deal with desiccation?

Organisms can deal with the potential water loss by hiding or “clamming up.” “Clamming up” consists of closing shells or otherwise walling yourself off from the environment in an attempt to conserve moisture (such as an oyster closing its shell or a snail walling itself off using its operculum).

What animals can survive desiccation?

Which is the best description of the process of desiccation?

Desiccation. Desiccation is the state of extreme dryness, or the process of extreme drying. A desiccant is a hygroscopic (attracts and holds water) substance that induces or sustains such a state in its local vicinity in a moderately sealed container.

How does disc desiccation affect an older person?

As we mentioned, disc desiccation is a degenerative condition which usually affects older people. The spine is made up of vertebrae. In order to absorb the shock, a spongy disc is placed between each vertebra. Unfortunately, these discs can wear down and cause degenerative disc disease (DDD).

What does the word desiccation mean on YouTube?

DESICCATION meaning, definition & explanation If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

How is desiccation used in oil and gas industry?

Desiccation is widely employed in the oil and gas industry. These materials are obtained in a hydrated state, but the water content leads to corrosion or is incompatible with downstream processing. Removal of water is achieved by cryogenic condensation, absorption into glycols, and absorption onto desiccants such as silica gel.