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ANTONII [103]
3 years ago
12

Heeeeelp and thanks :)

Biology
1 answer:
ollegr [7]3 years ago
6 0
A:)))))))))))))))))))))))))))))))
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A carbohydrate composed of two covalently-bonded simple sugars (monosaccharides) is called a(n)?
Novosadov [1.4K]

A carbohydrate composed of two covalently bonded simple sugars is called a <u>disaccharide</u>.

Carbohydrates or sugars are one of the four main categories of the macromolecules that make up living things (the other three being nucleic acids, proteins and lipids). It can either be a simple sugar (sugar monomer or monosaccharide) or a polymer of simple sugars.

Carbohydrates are composed entirely of carbon, oxygen and hydrogen atoms. Simple sugars or monosaccharides contain six carbon atoms, twelve hydrogen atoms and six oxygen atoms. When two monosaccharides bond covalently, they form a disaccharide.

Some examples of disaccharides include:

  • Sucrose or table sugar - It is made up of one glucose molecule and one fructose molecule
  • Lactose or milk sugar - It is made up of one glucose and one galactose molecule
  • Maltose or malt sugar - It is made up of two glucose molecules.

Learn more about carbohydrates here:

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2 years ago
"A technologist in a tissue bank who performed HLA typing by DNA analysis was asked to bank all DNA extracted from specimens rec
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Explanation:

The DNA could be dried -through the process of lyophilization- or stored, as a precipitate of ethanol, in liquid nitrogen (temperatures below -80 degrees Celsius). The aim is to reduce water in the stored samples as much as possible because the water can be involved in natural hydrolytic reactions (depurination, depyrimidination, deamination, and hydrolytic cleavage) that could degrade the nucleic acids of the DNA.

If the DNA is stored while being used regularly it is not advisable to store it as a precipitate of ethanol. It should be stored in aqueous form but in a slightly alkaline pH of about 8.5 to prevent acid-catalysed degradation processes.

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4 0
3 years ago
5. What is another word for Lithogenous
AlexFokin [52]

The answer is Marine Sediments or Sediments. Lithogenous is a sediments derived from preexisting rocks on land, it is also a type of marine sediment that forms thickest deposits worldwide, and it is sediment that begins as rocks on continents or island. An example of lithogenous sediment is sandstone.

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Dating the fossil at the site it was found, without benefit of laboratory equipment, would BEST be described as
galina1969 [7]

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Answer c) Relative Dating.

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Describe Lamarck’s idea about how organisms evolved. Use the giraffe’s neck as an example.
Murljashka [212]

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Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.

Lamarck believed that the stretching elongated the giraffe's neck, which became a useful characteristic and was passed onto future generations. This resulted in the length of the giraffe's neck increasing over time. It is now commonly accepted that Lamarck's ideas were wrong.

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