Chiral molecules Study guides, Class notes & Summaries

MCAT Organic Chemistry Written Exam. Electrostatic Forces - CORRECT ANSWER The attractive force between electrons and the nuclei that is responsible for all molecular bonds. Coordinate Covalent Bond - CORRECT ANSWER One nucleus donates both of the electrons in the bond. Hybridization - CORRECT ANSWER sp - 180° - linear sp2 - 120° - trigonal planar sp3 - 109.5° - tetrahedral, pyramidal, or bent dsp3 - 90°, 120° - trigonal-bipyramidal, seesaw, t-shaped, linear d2sp3 - 9...

ETS Major Field Test – Chemistry Latest Update with Complete Solutions what are isomers isomers are two compounds with the same molecular formula that are different What are the three types of isomers? 1. Structural (constitutional) isomers 2. Stereoisomers (two types) - enantiomers and diasteromers 3. Geometric isomers (also known as cis and trans isomers) what is a structural (constitutional) isomer? different bonding arrangement of atoms. atoms are bonded together in a differe...

Chem 219 Unit 3 Exam Questions With 100% Correct Answers Stereochemistry the study of the three-dimensional structure of molecules Stereoisomers Compounds with the same structural formula and connectivity but with a different 3D arrangement of the atoms in space. Enantiomers Stereoisomers that that are non-superimposable mirror images. Enantiomers have the same connectivity but different orientations (twist) of the four atoms or groups in 3D space. The two different forms of the chira...

Which amino acid is not chiral? a. Proline b. Glycine c. Tryptophan d. Histidine e. Isoleucine correct answers b. Glycine Do nucleic acids have a charge at the physiological pH? a. Nucleic acids are positively charged due to phosphate groups in a back bone b. Nucleic acids are not charged molecules c. Nucleic acids are negatively charged due to phosphate groups in a back bone d. Sugars in nucleic acids are positively charged, so nucleic acid molecules are negatively charged correct a...

Chem 219 Unit 3 Exam Questions With 100% Correct Answers Stereochemistry the study of the three-dimensional structure of molecules Stereoisomers Compounds with the same structural formula and connectivity but with a different 3D arrangement of the atoms in space. Enantiomers Stereoisomers that that are non-superimposable mirror images. Enantiomers have the same connectivity but different orientations (twist) of the four atoms or groups in 3D space. The two different forms of the chira...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

Biochemistry and Metabolism Exam 1 Questions with Complete Solutions. What are proteins made from? -Answer- amino acids What are some functions of proteins? (5) -Answer- structural, enzymatic, transport, defense, contractile Which isomer of carbohydrates is used in animals? -Answer- D What are DNA and RNA made of? -Answer- nucleic acids All lipids are formed from... -Answer- acetyl Co-A Complex lipids -Answer- phospholipids and glycolipids Simple lipids -Answer- triglycerides functions ...

Chem 219 Unit 3 Exam Questions With 100% Correct Answers Stereochemistry the study of the three-dimensional structure of molecules Stereoisomers Compounds with the same structural formula and connectivity but with a different 3D arrangement of the atoms in space. Enantiomers Stereoisomers that that are non-superimposable mirror images. Enantiomers have the same connectivity but different orientations (twist) of the four atoms or groups in 3D space. The two different forms of the chira...

Carbohydrate correct answers Polyhydroxy aldehyde, ketone, or a compound that produces such substances upon hydrolysis Chiral Centre correct answers -C atom attached to 4 different groups (tetrahedral geometry) -A molecule with a chiral centre is said to be "chiral Enantiomers correct answers -Stereoisomers that are not superimposable mirror images of each other -The configurations at all chiral centres are exactly opposite -All chemical and physical properties are the same -Differ in...

Physiological roles of carbohydrates correct answers -Sources of energy -Energy storage -Structural roles -Cellular interaction -Cellular identification -Information transfer (DNA & RNA) -Signaling Monosaccharide families correct answers -Carbohydrates have empirical formulas of (CH2O)N, where n>= 3 (usually 3-6) -Two major forms classes of carbohydrates; aldoses, and ketoses Aldoses correct answers -Which have aldehyde group Ketoses correct answers -Which have ketone groups ...