There are four classes of organic molecules: Proteins, lipids, carbohydrates and nucleic acids
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1 There are four classes of organic molecules: Proteins, lipids, carbohydrates and nucleic acids
2 Monomer Polymer The big four organic molecules are POLYMERS. Each is made up of smaller units called MONOMERS
3 If the train is the whole polymer, what would be the small groups that make up the train? If the necklace is the polymer, what are the monomers that make up the necklace? A Polymer Here are some analogies to better understand what polymers and monomers are. EXAMPLE of POLYMER MONOMER A TRAIN? A NECKLACE?
4 If the train is the whole polymer, what would be the small groups that make up the train? If the necklace is the polymer, what are the monomers that make up the necklace? A Polymer Here are some analogies to better understand what polymers and monomers are. EXAMPLE of POLYMER A TRAIN MONOMER THE CARS A NECKLACE EACH PEARL
5
6 When studying these biochemical molecules, we are interested in finding out.. what they do for living things. what they generally look like. what their monomers are. and how they may help the body gain energy to sustain life.
7 1. LIPIDS ü They are a great source of STORED ENERGY so we have it in the future. ü They INSULATE the body to maintain normal body temperature and they CUSHION the internal organs for protection. ü They produce hormones for the body called STEROIDS ü They waterproof surfaces of animals,plants, and fruits- these are waxes!
8 LIPIPS Some interesting info Fruits produce a waxy coating to keep from drying out. The cells in a tulip make a wax which helps coat the leaves. Ear wax traps dust, sand, and other foreign particles from going deeper into the ear and causing damage. Beeswax- a structural material to hold honey in the hive
9 LIPIPS Some interesting info There are many different types of steroids. They are all lipids. Their functions vary. Some common steroids are: SEX STEROIDS ANABOLIC STERIODS Like testosterone and estrogen CHOLESTEROL They increase muscle
10 very unhealthy LIPIPS Some interesting info NATURAL STERIODS Some anabolic IN OUR steroids are illegal BODY INCREASE MUSCLE GROWTH AND BONE DEVELOPMENT AND ARE GOOD. THE ILLEGAL ONES THAT ARE SYNTHETIC ARE BAD. And can be dangerous and
11 LIPIDS In plants- in the seeds, leaves In animals- in adipose tissue, connective tissue, in animals Lipids make up the cell membrane of all cells.
12 LIPIDS
13 LIPIDS Polymers: Lipids Monomer: Fatty acid This is a triglyceride molecule
14 LIPIDS Each lipid molecule is made up of THINK: CHO Notice the ratio of hydrogen to oxygen C 30 H 56 O 6
15 2. PROTEINS ü They are the major structural molecules in living things for growth and repair : muscles, ligaments, tendons, bones, hair, skin, nails ü ALL CELL MEMBRANES have protein in them ü They make up antibodies in the immune system ü They make up enzymes for helping chemical reactions ü Hormones the communicators of the bodies
16 Muscles, ligaments, tendons, and bones Without these particular structural proteins, we would look more like this.
17 Well, maybe not exactly
18 Hair, Skin, and Nails
19 Microscope View of Skin and Nails This is skin This is a nail
20 Cell Membrane The cell membrane surrounds everything in a cell so it doesn t leak out. It is kind of like the balloon in a water balloon. The cell membrane is made mostly of protein AND lipids.
21 Antibodies are part of the immune system. When something enters the body that isn t supposed to be there, like certain bacteria, antibodies find the invader and stick themselves onto it. When a white blood cell finds the invader covered with antibodies, it knows it doesn t belong there and kills it.
22 Enzymes are proteins that speed up chemical reactions. If you didn t have enzymes in your stomach to speed up digestion, the food would rot in your stomach because it would take so long!
23 Hormones are chemicals made in glands that are in one place in the body and then put into the blood to be used in another. These are where the hormone producing glands are located in your body.
24 The thyroid is found in the middle of your neck, by your voice box. Here is a picture of those cells secreting the thyroid hormone. (The yellow stuff is thyroid hormone) Thyroid hormone regulates how fast your body uses energy. If you have an over active thyroid, you use energy quickly and tend to be very thin and have a hard time putting on weight. If you have an under active thyroid gland, you use energy very slowly and tend to carry more body fat and have a difficult time losing it. Don t be quick to think you have a thyroid problem if you are overweight, chances are it s actually your eating and exercise habits!
25 PROTEINS In plant foods- in the cell membranes In animal products- in the cell membranes- in the muscles or living things- cows, chicken, fish
26 Proteins
27 Proteins Aside from the protein found in animal sources protein can also be found in fruits, vegetables, grains, and nuts. (it just does not have as many amino acids)
28 PROTEINS Proteins are made of long chains (polymers) made of monomers. All proteins are made of the monomer
29 The shapes of proteins are like a balled up piece of string Amino Acid chain All wound up
30 PROTEINS Each protein is made up of THINK: CHONS
31 3. CARBOHYDRATES ü They are the main source for the body to gain energy. They are our fuel! ü They make up the cell wall in plants which allow them to grow tall, without this carbohydrate, a plant would be a mushy mess! This type of carbohydrate is called Cellulose. THINK: CARBS= ENERGY and CELL WALLS
32 CARBOHYDRATES In plant foods- in the cell walls of plants --- in fruits, vegetables, peas, beans, SUGAR comes from a plant and so does FLOUR! (pasta, potatoes, bread, candy, cookies) In animal products- in MILK
33 CARBOHYDRATES THERE ARE 2 TYPES OF CARBOHYDRATES Simple Complex
34 Simple Sugars are carbohydrates made up of 1 or 2 monomers. They also taste sweet.
35 Simple Sugars
36 Complex Carbohydrates What are they? Complex Cabohydrates are polymers made up of many monomers. Most also taste starchy.
37 Complex Carbohydrates
38 CARBOHYDRATES Carbohydrates are chains (polymers) made of monomers. The most common monomer of carbohydrates is
39 The shape of Glucose is a hexagonal ring
40 CARBOHYDRATES Each carbohydrate is made up of THINK: CHO
41 OH NO CHO! Lipids and Carbs both CHO? You might have noticed that both carbohydrates and lipids have the elements Carbon, Hydrogen, and Oxygen. CHO A carbohydrate, has twice as many hydrogen atoms as the number of oxygen atoms. EX: C 6 H 12 O 6 (This is a carb= there are double the number of H compared to O) On the other hand, lipids have a lot more than twice the amount hydrogen atoms as the number of oxygen atoms. EX: C 27 H 46 O cholesterol
42 4. Nucleic Acids DNA & RNA
43 What do they do? The blueprints of life Dictate the making of proteins Genetic information found in chromosomes, which are passed from parent to offspring
44 What are they made of? Monomers called nucleotides, connected in long chains Nucleotides have 3 parts: 1-5-Carbon sugar 2- Nitrogen containing base (made of C, H and N) 3- A phosphate group ( P )
45 Nucleotides (the building blocks monomers, of nucleic acids
46
47 ENERGY Three of the BIG 4 provide us with energy through the food we eat: BIG 4 MACROMOLECULES Carbohydrates Number of Calories it provides Proteins Lipids Nucleic Acids
48 ENERGY Energy that is gained by consuming food is called a
49 Energy that we gain by the consumption of food is measured in Calories. If you drink a glass of skim milk, you will get a gain of 90 Calories of energy for your body.
50 Energy Gained From Carbohydrates Eating 1 gram of carbohydrate provides your body with 4 Calories.
51
52 Energy Gained from Lipids Eating 1 gram of fat provides your body with 9 Calories. Notice if you eat 1 gram of fat, you are gaining more than twice the amount of Calories than from a gram of carbohydrate or protein!
53 So BIG 4 MACROMOLECULES ENERGY Number of Calories it provides Carbohydrates 4 Proteins 4 Lipids 9 Nucleic Acids 0 TEST: Are you smart? If you eat a sandwich with 46 grams of carbs and 24 grams of protein and 10 grams of fat, how much energy will you gain? 370 Calories
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