Science

Refine Search

Why is heat necessary in spore staining?

According to Austin Community College, staining is a technique used by scientists to identify the spores in a bacteria sample. One of the most important steps in spore staining is to anticipate the properties of the spore that is being analyzed, because some of them are resistant to traditional dying processes. Often, this is a result of their tough exterior layer of protein, known as keratin. For endospores of this nature, it is necessary to utilize a heat-staining technique in order to stain the spores with their primary stain, malachite green.\nThe application of heat weakens the wall of a ..

Continue Reading

Where can I find little stars models?

The most highly-regarded star model is the Hertzsprung-Russell Diagram. Astronomers use this chart to help determine age and physical size of a star based on luminosity, temperature, absolute magnitude and spectral class. Once a star is identified and plotted on the Hertzsprung-Russell Diagram using at least two of the classifiers, the star's position in its life-cycle can be determined. The Hertzsprung-Russell Diagram can be found on Swinburne University's astronomy website.

Continue Reading

What animals eat kelp?

There are even sea mammals who stay close to kelp forests for protection and food. These mammals include seals, sea lions, and in some cases, grey whales. Each animal in a kelp forest helps to control the populations of other animals, or the kelp itself. Sea urchins remove kelp plants and the sea otter eats the sea urchin. Animals that eat kelp are an important part of the ocean's ecosystem.

Continue Reading

What is the boiling point of dichloromethane?

Dichloromethane is a colorless and volatile liquid at room temperature. It is miscible in many organic solvents and therefore is widely used as an organic solvent. The compound is highly polar as well and dissolves any polar compounds. Dichloromethane can be found naturally on Earth in the ocean, in wetlands and in volcanoes. It can also be produced by treating chloromethane or methane with large concentrations of chlorine at very high temperatures.

Continue Reading

What are the two bony structures that make up the nasal septum?

Because the nasal septum is often off center or crooked, this can result in a narrowing of one or both sides of the nasal cavity, according to the American Rhinologic Society. The nasal septum acts to separate the right and left nasal cavities, or nostrils, which connect at the back of the septum via the opening of the nasopharynx.

Continue Reading

What is the definition of "rhizome"?

Rhizomes have nodes, which are small swellings. These nodes produce both rootlets that go down into soil and collect nutrients and produce stems that rise up through the ground and form new plants.\nMany gardeners are ambivalent about plants with rhizomes because even if the plants are wanted, they can become invasive. Plants with rhizomes include species of bamboo, lily-of-the-valley, irises, cannas, some types of orchids and asparagus. Some plants are grown specifically for their rhizomes, which are used in cooking. These include ginger, galangal and turmeric.

Continue Reading

Where is sulfur found?

Sulfur is classified as a non-metal part of the nitrogen family in the periodic table of elements and has an atomic weight of 32.065 with a melting point of 388.36 K. It is the 10th most plentiful element in the universe. Sulfur is pale yellow in color, odorless and appears as a brittle solid. It is not water soluble but is soluble in carbon disulfide. There are eleven isotopes of sulfur. Four isotopes of sulfur are naturally occurring. The majority of sulfur that is produced or collected is used to create sulfuric acid. Sulfuric acid is commonly used to create fertilizers and batteries. To ha..

Continue Reading

How many valence electrons does phosphorus have?

Phosphorus is the 15th element on the periodic table of elements. It is incredibly reactive, which is why it is almost always found attached to other elements and compounds in rock. A single phosphorus atom has 15 electrons and protons, as well as usually having 16 neutrons. It is a very important element for life on Earth, found in both RNA and DNA.

Continue Reading

What are some facts about Hurricane Hanna?

Hurricane Hanna began in late August 2008 as a tropical storm located to the east-northeast of the northern Leeward Islands and moved westward from there across the Atlantic Ocean. It grew rapidly and was named Hanna by the National Hurricane Center on Aug. 28.\nMeanwhile, Hurricane Gustav was commencing nearby. Initial forecasts predicted that Gustav would weaken Hanna, but Hanna suddenly took a sharp southerly turn off its predicted course on Aug. 30 due to the influence of Hurricane Gustav's large circulation. Convection increased, and the storm began to intensify on Sept. 1. The Natio..

Continue Reading

What animals eat fruit?

Fruit bats live entirely on fruits, such as mangoes, bananas and avocados. They are important pollinators. As the bats sip nectar from flowers, pollen gets caught in their fur and carried to other flowers. The seeds from the fruit are distributed through the bats' excrement. Fruit bats are distinct from their insect-eating cousins. They have small ears, long noses and resemble foxes.\nOrangutans are another mammal with a fruit-filled diet. Ninety percent of their food is fruit, coming from at least 400 different types of plants and trees. Their favorite food is a durian, a spine-covered f..

Continue Reading
Showing 8261 to 8270 of 10000 (1000 Pages)