- Amylase: This is a polysaccharide found in plants, with \( \alpha \)-1,4 and \( \alpha \)-1,6 linkages between glucose units, so the correct linkage type is \( \alpha \)-C1-C4 plant (IV).
- Cellulose: Cellulose is a polysaccharide made of \( \beta \)-1,4 linkages, commonly found in plants, so the correct linkage is \( \beta \)-C1-C4 plant (I).
- Glycogen: Glycogen is a polysaccharide found in animals, consisting of \( \alpha \)-1,4 and \( \alpha \)-1,6 linkages between glucose units, so the correct linkage is \( \alpha \)-C1-C4 \( \alpha \)-C1-C6 plant (III).
- Amylopectin: Similar to glycogen, it is found in plants and is made of \( \alpha \)-1,4 and \( \alpha \)-1,6 linkages, so the correct linkage is \( \alpha \)-C1-C4 plant (II). Thus, the correct answer is (2).
Consider the following two reactions A and B: 
The numerical value of [molar mass of $x$ + molar mass of $y$] is ___.
Consider an A.P. $a_1,a_2,\ldots,a_n$; $a_1>0$. If $a_2-a_1=-\dfrac{3}{4}$, $a_n=\dfrac{1}{4}a_1$, and \[ \sum_{i=1}^{n} a_i=\frac{525}{2}, \] then $\sum_{i=1}^{17} a_i$ is equal to
