Science Studies

New PDF release: Biochemistry

By Monique LaBerge

An creation to the basics of biochemistry. This e-book explains an important advancements and achievements within the box, identifies key rules, and covers the necessities in a concise demeanour.

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The approaching substrate fits perfectly into the ­enzyme—­like a key going into a lock. The ­enzyme-­substrate complex is then formed, and products form out of the substrate. The products no longer fit the “lock” of the active site and are released. shape that fits the substrate precisely. The substrate bonds to the enzyme at the active site, forming an ­enzyme-­substrate (ES) complex. Once the substrate and enzyme are bound together, the enzyme can change its shape slightly, twisting the substrate in the active site to make it more likely to change to form the product.

0 × 1010 km For comparison, the distance from the Earth to the Sun is 152 × 106 km. 0 × 1010 km/152 × 106 ­km = ­131 This means that the length of the DNA in the body of an adult is as long as the distance covered by 131 trips between the Earth and the ­Sun. the chromatin unwinds so that the DNA can replicate. After DNA replication, the chromatin coils up even tighter to form structures called chromosomes. The chromosomes are about 100,000 times shorter than fully stretched DNA, and therefore are 100,000 times thicker, so they are big enough to be seen with a light microscope.

Molecules made up of two monosaccharides bonded together are called disaccharides. ” Molecules made up of more than two monosaccarides are called polysaccharides. Sugars are very soluble in water, as seen when adding a spoonful to a cup of tea. 1 Glucose is a monosaccharide. It has two forms: the straight form (left) and the ring form (right). Monosaccharides Glucose, the most important monosaccharide, has the molecular formula C6H12O6. Most carbohydrates in food are broken down to glucose in the course of digestion.

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Biochemistry by Monique LaBerge


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