What is the main role of carbohydrates in the body?

Providing a quick source of energy

An enzyme is best described as:

A biological catalyst that speeds up reactions without being used up

Each enzyme has a specific shape that fits only one type of substrate

It is denatured and the active site changes shape

Iodine solution turning blue-black

Because it is a catalyst and is unchanged at the end

Slow the enzyme and, at extremes, denature it

13questions. Pick an answer and you'll see why right away.

What are the building blocks of proteins?
Which element is found in proteins but not in carbohydrates or fats?
What is the main role of carbohydrates in the body?
An enzyme is best described as:
The lock and key model explains that:
What happens to an enzyme at a temperature well above its optimum?
What is the optimum temperature for most human enzymes?
Which reagent and result show that starch is present?
A food gives a brick-red colour when heated with Benedict's solution. What does it contain?
Which test gives a violet (purple) colour as a positive result?
Why is an enzyme not used up during a reaction?
What does the ethanol emulsion test detect?
Each enzyme also has an optimum pH. Moving far from it will: