Quiz 5 Chemistry

Quiz 5 Chemistry - Removal of -H and -OH from monomers to...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Quiz 5 Chemistry 1. What defines the element to which a particular atom belongs? The number of protons in the  nucleus. 2. An isotope has a half-life of 13 years. If there is a 3 gram lump of this isotope, how much of  the isotope will remain after a period of 52 years? 0.1875 gram 3. What causes a hydrogen bond? unequal sharing of electrons between covalently oxygen and  hydrogen atoms 4. Distinguish between a hydrophilic and a hydrophobic substance. Hydrophobic substances do  not mix well with water; hydrophilic substances mix well with water 5. Which general type of chemical reaction is respiration? Oxidation 6. Whic of the following generally describes the process of synthesis (=dehydration synthesis). 
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Removal of -H and -OH from monomers to join the monomers into a polymer, and forming water. 7. What does the second law of thermodynamics state? Some useful energy is lost to a system whenever an energy trnasfer occurs. 8. What is the relationship between monosaccharides and polysaccharides? polysaccharides are composed of monosaccharide units 9. What are the basic units that comprise an unsaturated fat molecule? glycerol and 3 fatty acids, at least one of which is unsaturated 10. What is a secondary structure of a protein? The twisting of the string of amino acids into an alpha-helix or pleated sheet....
View Full Document

This note was uploaded on 06/30/2009 for the course BIO 105 taught by Professor Mickle during the Spring '07 term at N.C. State.

Ask a homework question - tutors are online