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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Ever heard that kids are naturals when it comes to learning a language? Or maybe you know someone who gets easily discouraged from attending a second language course because they say they’re too old. Whatever you might have heard about this, whether you can remember or not, I’m positive it’s related to one of the most famous linguistics debates, which has been around since the 1960s.
1 minute of latitude is equal to 1 nautical mile.
Just like an hour of time, there are 60 minutes in a degree of latitude.
Therefore, there are 60 nautical miles in each degree.
Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested material.
