Proteins: Structure of Amino Acids | A-level Biology | OCR, AQA, Edexcel

Proteins: Structure of Amino Acids in a Snap! Unlock the full A-level Biology course at http://bit.ly/2tjNUXC created by Adam Tildesley, Biology expert at SnapRevise and graduate of Cambridge University.

SnapRevise is the UK’s leading A-level and GCSE revision & exam preparation resource offering comprehensive video courses created by A* Oxbridge tutors. Our courses are designed around the OCR, AQA, SNAB, Edexcel B, WJEC, CIE and IAL exam boards, concisely covering all the important concepts required by each specification. In addition to all the content videos, our courses include hundreds of exam question videos, where we show you how to tackle questions and walk you through step by step how to score full marks.

Sign up today and together, let’s make A-level Biology a walk in the park!

The key points covered in this video include:
1. Introduction to Proteins
2. Structure of Amino Acids
3. R groups

Introduction to Proteins

Proteins are organic molecules that have many important functions including: Structural roles, Metabolic roles, Transport roles. Like carbohydrates and lipids, proteins are made up of carbon, hydrogen and oxygen. However, they also contain other elements such as nitrogen and sometimes sulphur and phosphorus.

Structure of Amino Acids

Amino acids are the building blocks used to make proteins - they are monomers. All amino acids have the same basic structure. They have a central carbon (C) atom bonded to a carboxyl group (-COOH), an amino group (-NH2), a hydrogen atom (-H) and an R group (-R). There are 20 naturally occurring amino acids that each have a different R group. Amino acids are the monomer units used to make proteins. All amino acids have the same basic structure with different R groups.

R groups

Each amino acid has a different R group which can vary in: Size, Polarity, Charge. This gives every amino acid different properties.

Summary

Proteins are organic compounds composed of carbon, hydrogen, oxygen, and nitrogen
The R groups of amino acids can also contain sulphur and phosphorus
Amino acids are the monomer units used to make proteins
Amino acids contain a central carbon which is bonded to a carboxyl group, an amino group, a hydrogen and an R group
There are 20 naturally occurring R groups which can vary in size, polarity and charge

Видео Proteins: Structure of Amino Acids | A-level Biology | OCR, AQA, Edexcel канала SnapRevise