Amylose makes up about 15-20% of starch and is responsible for its helical structure.
80-85 %
60-80 %
50-60 %
15-20 %
Starch is a polysaccharide made up of glucose units and consists of two main components: amylose and amylopectin. Amylose is a linear polymer of glucose, while amylopectin has a branched structure. On average, amylose makes up about 15-20% of starch, while the remaining 80-85% is amylopectin.
Thus, the correct answer is \( \boxed{15-20\%} \), corresponding to option (E).
For the reaction:
\[ 2A + B \rightarrow 2C + D \]
The following kinetic data were obtained for three different experiments performed at the same temperature:
\[ \begin{array}{|c|c|c|c|} \hline \text{Experiment} & [A]_0 \, (\text{M}) & [B]_0 \, (\text{M}) & \text{Initial rate} \, (\text{M/s}) \\ \hline I & 0.10 & 0.10 & 0.10 \\ II & 0.20 & 0.10 & 0.40 \\ III & 0.20 & 0.20 & 0.40 \\ \hline \end{array} \]
The total order and order in [B] for the reaction are respectively: