Lesson (1) Chemical structure of living organisms' bodies (Carbohydrates and Lipids)

(Give reasons for (Rationlize

1- The importance of carbohydrates

2- Benedict reagents can be used to detect simple sugars

3- The importance of lipids

4- The biological importance of phospholipids

5- Monosaccharides are good sources of energy

6- Some birds' feathers are covered with oils

7- Waxes cover the leaves of desert plants

8- Steroids play an important role in living organisms

9- Sudan IV reagents are used to detect lipids

1 Choose the correct answer

1- ……… are from organic molecules forming living organisms

2- ……. are from inorganic molecules in living organisms

3- Biological macromolecules whose general formula is (CH2O)n are called……

4- Carbohydrates are stored in plants in the form of…….

5- Carbohydrates are stored in animals and humans in the form of …..

6- Animals and humans store carbohydrates in ………

7- ……….. polymers consist of one molecule

8- ………. Polymers consist of two molecules each

9- ………….. is from monosaccharides.

10- …………. Is from disaccharides

11- starch is from ……..

12- ……… is from complex sugars

13- …….. is a disaccharide whose polymer is composed of one glucose molecule and another fructose one

14- …….. is a disaccharide whose polymer is composed of two glucose molecules bound together 

15- Lactose polymer consists of a glucose molecule bound to …….. one

16- ……… sugar is found in fruits