Children get first mobile phone at average age of eight. Eight is the average age at which children are given their first mobile phone, according to a survey. Child on mobile phone: A survey found that children as young as seven were offering to do chores in exchange for cash to buy ringtones Photo: IAN JONES.
Enzymes such as amylases and proteases break down large molecules (starch or proteins, respectively) into smaller ones, so they can be absorbed by the intestines. Starch molecules, for example, are too large to be absorbed from the intestine, but enzymes hydrolyze the starch chains into smaller molecules such as maltose and eventually glucose, which can then be absorbed.
One example of hydrolysis is the breakdown of starch, which is catalyzed by the enzyme amylase. Starch is broken down into smaller molecules, which consist of the sugar known as maltose. Maltose may then be further broken down into glucose molecules, under the influence of the enzyme maltase.