Science

Refine Search

What are the uses for moringa seed?

Moringa seeds contain vitamins A and C, potassium, calcium, iron and zinc. They are loaded with protein. The seeds are used in treatment programs for diabetes, high cholesterol, boils, gout, rheumatism, arthritis, liver and kidney disorders. Diarrhea, epilepsy, low energy levels, blindness, osteoporosis and weakened immune systems are also treated with the seeds. Moringa trees are very cheap and easy to grow, making them an important food source in many parts of the world. The leaves, pods and seeds are often used in India and Africa in feeding programs to fight malnutrition.\nMoringa trees ar..

Continue Reading

What is an extended phenotype?

If a new allele arose that somehow improved dam making in beavers or nest building in birds, that allele would grow in prevalence among the beaver and bird populations, respectively. Baby birds with the allele would build better nests than those without it and be more likely to survive to pass it on to their offspring. Richard Dawkins, the man who proposed the idea of the extended phenotype, argues that once the new allele was introduced, the population of birds would evolve because of the allele.

Continue Reading

What reaction must carboxylic acid go through to create an aldehyde?

Some possible methods to synthesize aldehydes from carboxylic acid include reducing the carboxylic acid to form an alcohol, and then oxidizing the alcohol to form an aldehyde. Another method to produce aldehydes from carboxylic acid is to convert the carboxylic acid to an ester via esterification. The ester product can then be reduced with a mild reducing agent to produce an aldehyde.

Continue Reading

What is Stentor coeruleus?

Stentor coerulus ingest algae and form a photosynthesis relationship with them which gives them a blue or green color. They are referred to as heterotrichs because they have multiple cilial structures on different parts of their body. Cilia mostly cover the rim of the trumpet. A major characteristic of stentor is the rapid stretching and contraction of its body

Continue Reading

What is the electron configuration of arsenic?

The electron configuration of arsenic allows it to combine in several different valances, including -3, 0, +3 and +5. It combines with other elements, including hydrogen, oxygen, the halogens and sulfur. Many of these compounds are extremely poisonous. Arsenic (III) oxide of white arsenic is one of the most well-known. In dilute concentrations, too weak to be poisonous, arsenic is a carcinogen, according to Reference.com.\nThe synthetic arsenates, Paris Green (copper(II) acetoarsenite), calcium arsenate and lead hydrogen arsenate were once common as agricultural insecticides, until the discove..

Continue Reading

In which part of the chloroplast does each stage occur?

In the light stage of photosynthesis, the chloroplast absorbs the light of the sun. This sets off a series of chemical reactions, beginning by converting the sunlight to chemical energy. According to About.com, three types of energy are produced: ATP, NADPH and oxygen, all of which are used in the dark stage of photosynthesis. The light stage takes place in the grana's thylakoid stacks. Grana are visible under a microscope. Thylakoids contain chlorophyll, a green plant pigment that allows for the absorption of light. The thylakoids also contain important proteins that are needed in the ph..

Continue Reading

How many milliliters equal 1 cup?

To calculate how many milliliters are in cups, divide the number of cups by 0.0042268, then round the result to the nearest one-hundredth. So, in the example of 1 cup, to determine the number of milliliters, the numerical problem is written out as 1/0.0042268=236.5855966688748, which then rounds to 236.59. To calculate the number of milliliters in different numbers of cups, remove the number one representing the number of cups from the numerical equation and plug in the new number. Then, divide by 0.0042268 to get the new amount of milliliters for the new amount of cups.

Continue Reading

What is a U-shaped magnet?

The magnetic lines go from pole to pole in a magnet. In a U-shaped magnet, most of the magnetic field is in the area between the two poles, but the magnetic lines travel through the rounded area of the U as well. Because both poles are pointing in the same direction, the U-shaped magnet has more lifting strength, attracting objects to both poles. This type of magnet is a permanent magnet and does not require a current to operate.

Continue Reading

What is DNA sequencing?

Automatic sequencing machines read electrophoresis gels, resulting in faster and more accurate DNA sequencing. These machines can produce a rough draft of a DNA sequence of 20,000 to 50,000 bases in a few hours. First-generation DNA sequencing technology employed the Maxam-Gilbert method and the Sanger method. Finishing is a method that involves the final assembly of the raw sequences that come out of the sequencing machines. Newer sequencing technologies have made it possible to sequence the genomes of several organisms, including the mouse, the rat, a malaria-carrying mosquito and mustard we..

Continue Reading

What is a phase transfer catalyst?

Reactions that use phase transfer catalysts do not require the high polar solvents DMSO or DMF. Instead, they are carried out using nonpolar aprotic solvents and water. Phase transfer catalysts, sometimes referred to as PTCs, are used in green chemistry because they reduce the need for organic solvents and produce higher yields with fewer byproducts and waste materials.

Continue Reading
Showing 6421 to 6430 of 10000 (1000 Pages)