Define the terms Antigen and Antibody

Let two A.P's have the first terms a , a' and common difference d. Given that difference between their 100th  term is 100. then a + 99d - a' - 99d = 100 ⇒...

Let 1st term of AP be a Its common difference d = 3rd term - 2nd term = 18-14=4 So  a+d =14=> a=14-4=10 Sum of first 51 terms =51/2(2*10+(51-1)*4) = 51×110=5610

Sum of first n terms of A.P will be n2  Explanation : n1=7 Sn=49 we know that Sn = n/2{2a+(n-1)d} thus, Sn1=7/2(2a+6d)=49     =14a+42d=98     ... (1) x17 n2=17 Sn2=289 Sn2=17/2(2a+16d)=289      =34a+272d=578     ....(2) x7 from eq 1 & 2 238a +714d =1666 ...

(i) Phylum Phylum is the primary division of kingdom. It includes one or more related classes of animals. In plants, instead of phylum, the term ‘division’ is used. (ii) Class Class is a...

(i) Parallel lines : Two straight lines which have no point in common are said to be parallel to each other. ‘Point’ and ‘straight line’ will have to be defined...

An antigen is a foreign substance that elicits the formation of an antibody. Antibody is a protein that is synthesised in response to an antigen. Antigen and antibody show high degree of specificity in binding each...

Yes. One can use antibody against the enzyme (that is responsible for the metabolism of phenylalanine) to develop ELISA based diagnostic technique. The patient where the enzyme protein is absent...

Yes. One can use antibody against the enzyme (that is, responsible for the metabolism of phenylalanine) to develop ELISA based diagnostic technique. The patient where the enzyme protein is absent...

We have, an = 5-6n ⇒ a1 = 5 - 6 x 1 = -1 So, the given sequence is an A.P with first term a = a1 = -1 and last...

Solution: a + 3d + a + 7d = 24 Or, 2a + 10d = 24 Similarly, 2a + 14d = 44 So, 44 – 24 = 4d Or, d = 5 2a + 10x5...