BIOMOLECULES. (AKA MACROMOLECULES) Name: Block:
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1 BIOMOLECULES (AKA MACROMOLECULES) Name: Block:
2 BIOMOLECULES POGIL All living things share the same chemical building blocks and depend on chemical processes for survival. Life without carbon (C) would be as likely as life without water. Other than water, most molecules of a cell are carbon-based. The biomolecules are composed of a backbone or carbon atoms bonded to one another. Atoms of other elements such as hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P) and Sulfur (S) may branch off of this carbon backbone. This basic structure is the foundation for the different groups of biomolecules: carbohydrates, lipids, proteins and nucleic acids. Carbohydrates are used by all living things as their main source of energy. Plants and animals also use carbohydrates for structural purposes. The monomers (building blocks) of all carbohydrates are called monosaccharides or simple sugars. Directions: Please read the directions and answer the following questions in regard to each model. MODEL 1 Name Sugar 1 Sugar 2 Ratio of Elements C H O C H O Simplest Whole Number Ratio 1. Use a yellow marker to mark all of the C (carbon) atoms in Sugar 1. Count and record your answer in the blank next to the C (carbon) in the row labeled ratio of elements. 2. Use a green marker to mark all of the H (hydrogen) atoms in Sugar 1. Count and record your answer in the blank next to the H (hydrogen) in the row labeled ratio of elements. 3. Use a blue marker to mark all of the O (oxygen) atoms in Sugar 1. Count and record your answer in the blank next to the O (oxygen) in the row labeled ratio of elements. 4. Repeat steps 1, 2 and 3 for Sugar 2.
3 CRITICAL THINKING QUESTIONS: Write your answers to the following questions below. 1. What are the only three elements that are found in monosaccharides (simple sugars)? 2. What is the simplest whole number ratio for each of the above simple sugars? 3. What is the name of the monomer of carbohydrates? 4. Monosaccharides (simple sugars) are called carbohydrates. Using what you have learned about the elements in monosaccharides and ratio of the elements, explain why the term carbohydrate is an appropriate term for this group of compounds. 5. What is the name of the biomolecule that is formed when 3 or more monosaccharides are combined? 6. List 2 food examples of a monosaccharide: 7. List 2 food examples of a polysaccharide: 8. What function do carbohydrates provide cells?
4 Directions: Please read the directions and answer the following questions in regard to each model. Lipids or fats are made up of a glycerol and fatty acid tails. Glycerol Lipids are produced when glycerol binds to the fatty acids. A maximum of three fatty acids can bind to one glycerol molecule to form a lipid. Saturated fatty acid chains have all single bonds between the carbons while unsaturated fatty acids will have 1 or more double bonds between the carbons in the chain. MODEL 2 Name Fatty Acid 1 Fatty Acid 2 Ratio of Elements C H O C H O Simplest Whole Number Ratio 1. Use a yellow marker to mark all of the C (carbon) atoms in Fatty Acid 1. Count and record your answer in the blank next to the C (carbon) in the row labeled ratio of elements. 2. Use a green marker to mark all of the H (hydrogen) atoms in Fatty Acid 1. Count and record your answer in the blank next to the H (hydrogen) in the row labeled ratio of elements. 3. Use a blue marker to mark all of the O (oxygen) atoms in Fatty Acid 1. Count and record your answer in the blank next to the O (oxygen) in the row labeled ratio of elements. 4. Repeat steps 1, 2 and 3 for Fatty Acid 2.
5 CRITICAL THINKING QUESTIONS: Write your answers to the following questions below. 1. What elements are present in the glycerol? 2. Are there any elements in glycerol that are not in carbohydrates? 3. What are the elements that are found in fatty acids? 4. What is the simplest whole numbe ratio for each of the above fatty acids? 5. Compare the molecules in MODEL 1 (Carbohydrates) to the molecules in MODEL 2 (Lipids). In what ways are the molecules similar? In what ways are the different? SIMILAR DIFFERENT 6. Using what you know about the property of water, which model (1 or 2) above would be more likely to be polar and attracted to water (hydrophilic)? Explain your answer. 7. Using what you know about the property of water, which model (1 or 2) would more likely be nonpolar and repel the water (hydrophobic)? Explain your answer. 8. List 2 ways lipids are used by cells: 9. What are the 2 types of fats: & 9. List 3 examples of food that are lipids:
6 Directions: Please read the directions and answer the following questions in regard to each model. Amino acids are the basic building blocks or subunits of proteins. There are twenty essential amino acids, and each one of them is a little different. Each amino acid is composed of a common group (a central carbon with a single hydrogen, an amine group NH 2 and a carboxyl group COOH) and a variable group designated as R. It is the variable group or R group that determines the differences in properties. All organisms need some proteins, whether they are used in muscles or as simple structures in the cell membrane. Amino acid General Structure MODEL 3 Name: Amino Acid 1 Amino Acid 2 Ratio of Elements C H O N C H O N 1. Use a yellow marker to mark all of the C (carbon) atoms in Amino Acid 1. Count and record your answer in the blank next to the C (carbon) in the row labeled ratio of elements. 2. Use a green marker to mark all of the H (hydrogen) atoms in Amino Acid 1. Count and record your answer in the blank next to the H (hydrogen) in the row labeled ratio of elements. 3. Use a blue marker to mark all of the O (oxygen) atoms in Amino Acid 1. Count and record your answer in the blank next to the O (oxygen) in the row labeled ratio of elements. 4. Repeat steps 1, 2 and 3 for Amino Acid Use a pen or a pencil and draw a box around the common group of, Amino Acid 1 and Amino Acid Circle and label the R group in each molecule.
7 CRITICAL THINKING QUESTIONS: 1. Are there any elements in an amino acid that are not in carbohydrates or lipids? If yes, what is/are they? 2. List 3 functions of proteins: 5. List 3 food examples of proteins: Circle the R group in each of the amino acids below and draw a box around the common group. EXTENSION QUESTIONS: Study the diagrams below. Indicate whether the diagram is an example of a carbohydrate, fatty acid or an amino acid. A B C
8 Directions: Please read the directions and answer the following questions in regard to each model. Nucleic acids include DNA and RNA. The monomer of a nucleic acid is called a nucleotide and is composed of a pentose (5 sided sugar), a nitrogen base and a phosphate group (-PO4). The sugar found in DNA is called Dexoyribose, while the sugar found in RNA is called Ribose. DNA stores genetic information, while RNA copies and transmits the genetic information. Nucleotide MODEL 4 Name DNA RNA Ratio of Elements C H O N P C H O N P 1. Use a yellow marker to mark all of the C (carbon) atoms in DNA. Count and record your answer in the blank next to the C (carbon) in the row labeled ratio of elements. 2. Use a green marker to mark all of the H (hydrogen) atoms in DNA. Count and record your answer in the blank next to the H (hydrogen) in the row labeled ratio of elements. 3. Use a blue marker to mark all of the O (oxygen) atoms in DNA. Count and record your answer in the blank next to the O (oxygen) in the row labeled ratio of elements. 4. Repeat steps 1, 2 and 3 for RNA.
9 CRITICAL THINKING QUESTIONS: 1. Are there any elements in the nucleic acid structures that are not in the other three models? If yes, what is/are they? 2. List the 3 parts that make a nucleotide: 3. What is the function of DNA? 4. What is the function of RNA? 5. What is the name of the 5 sided sugar found in DNA? 6. What is the name of the 5 sided sugar found in RNA?
10 All living things contain the element. Carbon is unique because: are giant molecules formed by many smaller. Small molecules that join to make larger molecules are called. Monomers join together to form. This process is called. There are 4 major macromolecule groups found in all living things: CARBOHYDRATES: Used as the of by all living things. Contain the elements:, & (CHO) in a 1:2:1 ratio. Broken down as for cells to carry out cellular activities or processes such as and. The monomer (or building block) is called a which means one sugar unit. Examples of monosaccharides are: Glucose, and. List 3 examples of foods that are monosaccharides:,, and When 2 monosaccharides are joined together they form a polymer called a. List 2 examples: and. When 3 or more monosaccharides are joined together they form a polymer called a. The term POLY means. List four food examples of polysaccharides:, and. Many animals store excess sugar as to be used when needed by muscles or when experiencing a low blood sugar. Plants store excess sugar as. is another important polysaccharide found in plants which give plants rigidity and flexibility.
11 LIPIDS: (fats, waxes, oils and steroids) Used to. Contain the elements, & (CHO), but NOT in a 1:2:1 ratio. Lipids are which means they do not dissolve in water. The monomer (or building block) is a which consists of a glycerol molecule combined with three fatty acid tails. List 3 food examples of lipids:, and. There are 2 types of lipids: and. Unsaturated fats usually contain at least double carbon bond and is found in a state when at room temperature. Examples of unsaturated fats are :. Saturated fats do not contain any bonds and are usually when at room temperature. Examples of saturated fats are: Some lipids make up important parts of the biological membrane (cells and organelles). These lipids are called. Lipids also form waterproof coverings for plants.
12 PROTEINS: Used to form bones and muscles, transport substances into and out of cells, help the immune system to fight diseases, control the rate of chemical reactions and regulate cell processes. Proteins contain the elements Carbon, Hydrogen, Oxygen and & some contain. (CHON and S) The monomer or building block is a(n). There are more than different but essential amino acids found in nature. When 2 or3 amino acids are combined, they form what is called a chain. When 3 or more amino acids are combined, they form what is called a chain. The portion of an amino acid that is different is a side chain called the R group. It is what makes each amino acid unique in its structure and function. List 4 food examples of proteins:,, &. Some proteins act as biological catalysts called. A catalyst is a substance that chemical reactions that take place in the cell. All enzymes are and each enzyme is to each chemical reaction that takes place. An example of a chemical reaction is: NUCLEIC ACIDS: Used to and genetic information. There are two types of nucleic acids which are and. Nucleic Acids contain the elements Carbon, Hydrogen, Oxygen, Nitrogen and (CHONP). The monomer or building block is called a. A nucleotide contains 3 parts: (1). (2). and (3). DNA is stranded and called a or. It is located in the. DNA contains the 4 nitrogen bases: Adenine, Thymine, Cytosine and Guanine. RNA is stranded and contains the 4 nitrogen bases: Adenine, Uracil, Cytosine and Guanine. RNA is found in both the and the of all cells.
13 VOCABULARY WORDS for BIOMOLECULE UNIT: Write a definition of each word and then use it in a sentence. Underline the vocabulary word in the sentence. Vocabulary Word Definition Sentence 1. monomer The small single unit of a biomolecule the building block of a macromolecule. When two or more monomers are joined together, a larger molecule is made. 2. polymer 3. monosaccharide 4. peptide 5. triglyceride 6. nucleotide 7. enzyme 8. catalyst
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