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Proteins and Fats Structure and Function. Proteins and Fats What are some examples of protein?

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Presentation on theme: "Proteins and Fats Structure and Function. Proteins and Fats What are some examples of protein?"— Presentation transcript:

1 Proteins and Fats Structure and Function

2 Proteins and Fats What are some examples of protein?

3 Proteins and Fats What are some examples of protein? Fingernails

4 Proteins and Fats What are some examples of protein? Hair

5 Proteins and Fats What are some examples of protein? Egg Albumin

6 Proteins and Fats What are some examples of protein? Feathers

7 Proteins and Fats Proteins serve many functions in an organism:  Structural-collagen

8 Proteins and Fats Proteins serve many functions in an organism:  Structural-collagen  Transport-Hemoglobin

9 Proteins and Fats Proteins serve many functions an organism:  Structural-collagen  Transport-Hemoglobin  Immune-Antibodies

10 Proteins and Fats Proteins serve many functions in an organism:  Structural-collagen  Transport-Hemoglobin  Immune-Antibodies  Catalytic-Enzymes

11 Proteins and Fats All proteins, regardless of the source, animal, plant, fungal or bacterial, are all made from the same 20 amino acids.

12 Proteins and Fats All proteins, regardless of the source, animal, plant, fungal or bacterial, are all made from the same 20 amino acids. Amino acids contain carbon, hydrogen, oxygen and NITROGEN

13 Proteins and Fats Amino Acid Structure All amino acids have the following common structure.

14 Proteins and Fats Amino Acid Structure All amino acids have the following common structure.

15 Proteins and Fats Amino Acid Structure The side group is what makes each amino acid unique.

16 Proteins and Fats

17 Proteins are joined together by the DEHYDRATION SYNTHESIS REACTION.

18 Proteins and Fats How can 20 amino acids make all the proteins found in living organisms?

19 Proteins and Fats How can 20 amino acids make all the proteins found in living organisms? Different combinations and lengths (Letters of the alphabet)

20 Proteins and Fats Each amino acid is like a letter in the alphabet, the change of one amino acid can change the shape of the protein.

21 Proteins and Fats This is seen in hemoglobin where one acid change results in Sickle Cell Anemia.

22 Proteins and Fats Proteins have a specific three dimensional shape which is important in their biological role.

23 Proteins and Fats

24 The shape of a protein is influenced by temperature and pH. Out side of a specific range the protein breaks down, its DENATURED.

25 Proteins and Fats

26 What are some examples of fats?

27 Proteins and Fats What are some examples of fats? Animal Fat

28 Proteins and Fats What are some examples of fats? Plant Fat

29 Proteins and Fats What are some examples of fats? Lard

30 Proteins and Fats Fats serve two functions in an organism:  Storage of excess energy reserves

31 Proteins and Fats Fats serve two functions in an organism:  Storage of excess energy reserves  Insulation whale blubber

32 Proteins and Fats Fats serve three functions in an organism:  Storage of excess energy reserves  Insulation whale blubber  Protection

33 Proteins and Fats All lipids, regardless of the source, animal, plant, fungal or bacterial, are composed of carbon, hydrogen and oxygen. They are nonpolar (do not dissolve in water)

34 Proteins and Fats All lipids, regardless of the source, animal, plant, fungal or bacterial, are composed of carbon, hydrogen and oxygen. They are made of two molecules:  glycerol

35 Proteins and Fats All lipids, regardless of the source, animal, plant, fungal or bacterial, are composed of carbon, hydrogen and oxygen. They are made of two molecules:  glycerol &  fatty acids

36 Proteins and Fats Glycerol Structure

37 Proteins and Fats Fatty Acid Structure They can exist as two types, saturated and unsaturated.

38 Proteins and Fats Fatty Acid Structure They can exist as two types, saturated and unsaturated. They can range from 12 to 22 carbons in length.

39 Proteins and Fats Triglycerides are the most common fats and are composed of 1 glycerol and three fatty acid molecules.

40 Proteins and Fats Triglycerides are the most common fats and are composed of 1 glycerol and three fatty acid molecules. Guess what reaction combines them.

41 Proteins and Fats Triglycerides are the most common fats and are composed of 1 glycerol and three fatty acid molecules. Guess what reaction combines them. DEHYDRATION SYNTHESIS

42 Proteins and Fats

43 Phospholipids are another type of fat and make up cell membranes.

44 Proteins and Fats

45 1. What elements are found in proteins?

46 Proteins and Fats 1. What elements are found in proteins? Carbon, Hydrogen, Oxygen and Nitrogen

47 Proteins and Fats 2. What elements are found in carbohydrates and fats?

48 Proteins and Fats 2. What elements are found in carbohydrates and fats? Carbon, Hydrogen and Oxygen

49 Proteins and Fats 3. Is C 12 H a fat or carbohydrate? 4. How do you know?

50 Proteins and Fats 3. Is C 12 H a fat or carbohydrate? Carbohydrate 4. How do you know? 2 to 1 ratio of hydrogen to oxygen


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