MACROMOLECULES & HOMEOSTASIS
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1 MACROMOLECULES & HOMEOSTASIS
2 What do the prefixes Mono, Di, and Poly mean?
3 Answer: Mono 1 Di 2 Poly - Many
4 What is a monomer?
5 Answer: One unit in a molecule. It is one single sugar, amino acid, nucleic acid, etc
6 What is a Polymer?
7 Answer: A bunch of monomers attached together to form a chain or larger molecule.
8 What is a dimer?
9 Answer: Two Monomers attached together. Or a chain of two.
10 Fill in the following chart! Macromolecule Monomer Polymer Structure Example Lipids Nucleic Acids Carbohydrates Proteins
11 Answer: Macromolecule Monomer Polymer Structure Example Lipids Fatty Acid Lipid : Triglyceride Steroids Monounsaturated Fat Saturated Fats Nucleic Acids Nucleotide Nucleic Acid: DNA/RNA DNA/RNA mrna trna rrna Carbohydrates Monosaccharides Polysaccharides C6H12O6 Starch Cellulose Proteins Amino Acids Polypeptide OR Protein Hemoglobin Hormones Enzymes
12 Name 3 types of fat/lipid.
13 Answer: Unsaturated Monounsaturated Polyunsaturated Saturated Trans Fat
14 What does the term hydrophobic mean in relation to Lipids?
15 Answer: Hydrophobic means water fearing, or in other words water and lipids don t mix. Example: if you put oil in water, they will not mix.
16 What are the functions (4) of lipids?
17 Answer: Long term energy storage Protects against water loss Create hormones Big part of cell membranes
18 Name two important hormones that are in the human body and are made of lipids.
19 Answer: Estrogen and Testosterone
20 What is the purpose of a Nucleic Acid?
21 Answer: Stores hereditary information Stores information for making proteins. ATP is a nucleic acid and is our energy molecule.
22 What is another name for a Carbohydrate?
23 Answer: Sugar
24 What is the function of a Carb/Sugar?
25 Answer: Short Term Energy Storage Cell Recognition (they allow cells to sense what is happening around them) Structure in plants and insects.
26 How do plants store carbohydrates?
27 Answer: As starch (like in potatoes) As Cellulose (Fiber) We can t digest this!
28 What are the six functions of Proteins?
29 Answer: 1. Storage 2. Transport 3. Regulatory 4. Movement 5. Structural 6. Enzymes
30 What do we call in when a protein breaks down? Give 2 examples.
31 Answer: Denaturing can be caused by temperature changes or ph changes. Denaturing is when proteins unfold and don t work properly anymore. Eggs when cooked, curdled milk.
32 How much energy does each macromolecule provide for the body?
33 Answer: Lipids 9 kcal/g DNA 0 kcal/g Carbohydrates 4 kcal/g Protein 4 kcal/g
34 Match the monomer with the polymer that it creates. Monosaccharides Fatty Acids Amino Acids Nucleotides Answers: Protein, Lipid, Nucleic Acid, Carbohydrates
35 Answer: Fatty Acids Lipids Amino Acid Proteins Monosaccharides Carbohydrates Nucleotides Nucleic Acids
36 Match the molecule with the elements found in that molecule. Carbs Lipid Protein Nucleic Acid Possible Answers: Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus Carbon, Hydrogen, Oxygen Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur (sometimes)
37 Answer: Carbs - Carbon, Hydrogen, Oxygen Lipid - Carbon, Hydrogen, Oxygen Protein - Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur (sometimes) Nucleic Acid - Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus
38 What is the main element in organic compounds? Hydrogen Carbon Oxygen Nitrogen
39 Answer: Carbon
40 If an athlete "pasta loads" before an event, they are consuming a lot of: Amino acids Fatty acids Nucleotides Monosaccharides and Disaccharides
41 Answer: Monosaccharides and Disaccharides
42 Scientists have found geysers on one of Saturn s moons. The geysers release water vapor containing complex organic compounds, which may indicate the presence of life. Which of the following elements is most likely found in the organic compounds in the water vapor? Carbon Chlorine Iron Zinc
43 Answer: Carbon
44 What is this?
45 Answer: Amino Acid
46 What is this?
47 Answer: Nucleotide
48 Lipids, like fats and oils, are non-polar. Bambi does an experiment at home and pours different liquids into cups of water to see if the liquids are polar or nonpolar. She notices that vegetable oil will pool together and not mix with the water when added to it. Bambi tests food coloring and she notices the food coloring mixes and spreads out evenly when added to the water. Which of the following conclusions about food coloring are justified from this experiment? Food coloring is non-polar because it reacted with water in the same way oil did. Food coloring is polar because it reacted with water the same way oil did. Food coloring is non-polar because it mixed well with water unlike the oil. Food coloring is polar because it mixed well with water, unlike the oil did.
49 Answer: Food coloring is polar because it mixed well with water, unlike the oil did.
50 Your body temperature stays close to 98.6 degrees all the time. When you get hot, you sweat to cool down. This is an example of: Homeostasis Heterostasis Activation Energy Inactivation Energy
51 Answer: Homeostasis
52 What is homeostasis?
53 Answer: Creating a steady state in the body.
54 How do Macromolecul es maintain homeostasis?
55 Answer: They allow all of the body s processes to occur thus maintaining homeostasis. With out all of the macromolecules the body will fail to function.
B i o c h e m i s t r y N o t e s
14 P a g e Carbon Hydrogen Nitrogen Oxygen Phosphorus Sulfur ~Major ~Found in all ~Found in most ~Found in all component of all organic organic molecules. molecules. ~Major structural atom in all organic
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