1.2 Carbohydrates - monosaccharides

Question 1

What are organic molecules?

Answer 1

Molecules that contain carbon

Question 2

Define monomer

Answer 2

one of many small molecules that combine to form a larger one known as a polymer

Question 3

Define polymer

Answer 3

Large molecule made up of repeating smaller molecules (monomers)

Question 4

What is the basic monomer in carbohydrates?

Answer 4

sugar/saccharide

Question 5

What do you call a single, pair and many sugars?

Answer 5

monosaccharide, disaccharide and polysaccharides

Question 6

What features do monosaccharides hold?

Answer 6

sweet-tasting, soluble

Question 7

What is the general formula for monosaccharides?

Answer 7

(CH20)n

Question 8

Define isomer

Answer 8

2 or more compounds with the same formula but different arrangement of atoms in the molecule and different properties

Question 9

How do you test for reducing sugars?

Answer 9

Benedicts test
1. add 2cm3 of the food sample to be tested to a test tube. If the sample is not already in liquid form, first grind it up in water

2. add an equal volume of Benedicts reagent
3. heat the picture in a gently boiling water bath for 5 mins
4. Positive test shows yellow (low), orange (moderate), brick red (high)

Question 10

What is a reducing sugar?

Answer 10

A sugar that can donate electrons to (or reduce) another chemical.