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Amino Acids Video Lecture | Biology and Biochemistry for MCAT
FAQs on Amino Acids Video Lecture - Biology and Biochemistry for MCAT
| 1. What are amino acids and why are they important for the MCAT? |  |
Amino acids are organic compounds that are the building blocks of proteins. They consist of an amino group (-NH2), a carboxyl group (-COOH), and a side chain that is specific to each amino acid. Amino acids are important for the MCAT because they are a fundamental concept in biochemistry, and understanding their structure, properties, and functions is crucial for understanding protein structure, enzyme kinetics, and metabolism.
| 2. How many amino acids are there? | |
There are 20 standard amino acids that are commonly found in proteins. Each amino acid has a unique side chain, also known as the R-group, which gives it its specific properties and determines its role in protein structure and function.
| 3. What is the difference between essential and non-essential amino acids? | |
Essential amino acids are those that cannot be synthesized by the body and must be obtained through the diet. There are nine essential amino acids: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Non-essential amino acids, on the other hand, can be synthesized by the body from other molecules and do not need to be obtained through the diet.
| 4. How are amino acids classified? | |
Amino acids can be classified based on the properties of their side chains. They can be categorized as nonpolar, polar, acidic, or basic. Nonpolar amino acids have hydrophobic side chains, polar amino acids have hydrophilic side chains, acidic amino acids have negatively charged side chains, and basic amino acids have positively charged side chains.
| 5. What is the significance of the peptide bond in proteins? | |
The peptide bond is a covalent bond that links amino acids together in a protein. It forms between the carboxyl group of one amino acid and the amino group of another amino acid, resulting in the formation of a dipeptide. The peptide bond is significant because it determines the primary structure of a protein, which in turn influences its folding, stability, and function.
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