There's no set answer to how long the battery charge will last - it all depends on what you're doing with the tablet. Actions such as connecting to the internet, playing games or movies and other complex tasks will consume power faster than more simple tasks like writing emails or reading an ebook.
THE EFFECT OF CHANGING CONDITIONS IN ENZYME CATALYSIS This page looks at the effect of changing substrate concentration, temperature and pH on reactions involving enzymes. It follows on from a page describing in simple terms how enzymes function as catalysts.
Such bindings may activate an enzyme or inhabit the activity of the enzymes. Such enzymes are called allosteric enzymes. The components that bring about the activation or inactivation of allosteric enzymes are called allosteric affectors or effectors. The affecters block the activity and effectors activate the activity.