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Ratio and Proportion - Lesson 2
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mam, both selenocysteine (UGA) and pyrrolysine(UAG) are coded by stop codon. so, how cell system differentiate whether to code these amino acid or stop polypeptide synthesis?
1. Ratio and Proportion made easy Lesson 2

2. Calculating value of Ratio Ratio can be calculated in 2 ways In decimal terms e In percentage terms

3. In decimal terms Let us consider the below example A: B 1:4 In terms of decimal it is given by 14 0.25 We are simply dividing it

4. In percentage terms Let us consider the below example A: B 1:4 In terms of percentage it is given by 1 X 100 = 25% 4 We are simply multiplying the decimal terms by 100

5. Important properties of ratio Property 1: If we multiply all the terms of a ratio with the same number, then the ratio remains unaltered Example: A:B=2:3 A 2 2Xc 2X4 8 B 3 3Xc 3X4 12

6. Important properties of ratio Property 2 If we divide all the terms of a ratio with the same number, then the ratio remains unaltered Example: A:B=2:3 2

7. Important properties of ratio Property 3 Relation between 2 ratios A B 2:3 B: C 4:7 What is A : B : C A: B2X4:3X4 8:12 12: 21 Hence A : B : c 8:12:21

8. Thank You Arka Roy