Biology 2 Chapter 3A-D Worksheet Answers PDF

Name: ______________________________________ Date: ______________________ Biology 2 Wilkes-Barre Area High School Chapter 3 A-D Worksheet 1. All organic compounds must contain this element. _Carbon____...

Name: ______________________________________ Date: ______________________ Biology 2 Wilkes-Barre Area High School Chapter 3 A-D Worksheet 1. All organic compounds must contain this element. _Carbon______________________ Carbon bonds with up to four other atoms because it has four electrons in its valence electron shell and it needs how many more electrons? __4 more electrons_____________ 2. Organic compounds made up of many of the same, repeating units, are called ___Monomers_______ Monomers are linked together and a molecule of water is produced during this type of reaction. _Dehydration________ ___Synthesis________ also known as ____Condensation________ Polymers are broken down into individual monomers during this type of reaction. ___Hydrolysis__ Directions: Write the name of the functional group on the lines below. 1. __Carboxyl_______ 2. ____Amino_______ 3. ___Phosphate_____ 4. __Methyl________ 5. __Hydroxyl________ 6. __Carbonyl________ 3. List the five types of lipids: _Fatty Acid_, _Wax__, _Triglyceride_, _Phospholipid_, _Steroid____ List two main functions of lipids. _Control water movement in cells_, __Store energy__________ What elements can be found in lipids? ____Carbon, Hydrogen, Oxygen________________________ These are the monomers of most lipids. They are made up of a hydrophobic carbon/hydrogen tail and a hydrophilic head. ____Fatty Acid__________________________________ What functional group will you always find attached to these lipid monomers? ___Carboxyl group_ What makes a fat unsaturated? ___Double bonded Carbons will mean less hydrogen __________  This type of lipid is found in hormones, animal venoms and plant poisons. ____Steroids_________ Why are cell membranes made from lipid materials? _they are nonpolar and do not dissolve in water 4. What types of atoms can be found in carbohydrates? ___Carbon, Hydrogen, Oxygen_____________ What is the hydrogen to oxygen ratio in a carbohydrate molecule? 2 Hydrogen to every one Oxygen_ List two main functions of carbohydrates. ____Provide Energy, ____Make-up structures__________ Will you find any functional groups attached to a carbohydrate? ____Hydroxyl groups___________ Name three types of monosaccharides. _Glucose_____, __Galactose_______, __Fructose_______ Two simple sugars linked together would be known as ____Disaccharide___________________ Plants store glucose in a polysaccharide called: __________Starch________________________ Animals store carbohydrates in a polysaccharide known as ___Glycogen_____________________ What polysaccharide, found in the plant cell walls, is the most abundant organic compound on Earth? ___Cellulose______________ Glucose, fructose and galactose all have the same chemical formula C6H12O6 but they do not have the same structural formulas. These is an example of ____Isomerism____________________ What would be the name of a carbohydrate with 5 carbons? _____Pentose____________________ 5. Name two types of nucleic acids. _Deoxyribonucleic Acid___, ___Ribonucleic Acid_____________ What is the monomer of a nucleic acid? ______Nucleotide________________________________ What are the three parts of nucleotide? __5 carbon sugar__, _Phosphate group_, _Nitrogenous base_ Match the molecular formulas from Column A with names in Column B. Column A Column B __E__ C6H12O6 A. protein __A__ C3H7 NO3 B. polysaccharide __D__ C12H24O2 C. inorganic molecule __B__ C24H42O21 D. lipid __C___ H2O E. monosaccharide  O O–H C H H O H -- C -- H N -- C -- C H -- C -- H H O - H H -- C -- H H --- C --- H H -- C -- H H H -- C -- H H -- C -- H Substance B H -- C -- H H Substance A H H -- C - O - H H -- C ------------------ O OH -- C -- H H -- C -- OH O H H H -- C ------------------- C -- H O-H O-H Substance C Substance D Which of the above substances is a lipid? Substance A Which of the above substances is a protein? Substance B Which of the above substances is inorganic? Substance C Which of the above substances is carbohydrate? Substance D What is the chemical formula of substance A? C8H16O2 Circle any amino functional group on any of the above substances.