Practice Test: Chapters 1-3

Matching skip

Short Answer skip

1. Prokaryotic cell
   
2. Organelle
   
3. polysaccharides
   
4. Nonpolar covalent bonds
   
5. adhestion
   

Multiple Choice skip

1. nucleic acids
   1. makes polymers. Cells link monomers by removing molecules of water. For each monomer added, H2O is removed. One monomer loses OH- the other loses H+
   2. When polypeptide chains unravel. Lose shape and function. Can be caused by changes in salt, pH or excessive heat
   3. Designed to compare experimental group with control group. Groups differ only by one factor (independent variable). If do not use a controlled experiment, cannot rule out other factors to pinpoint cause for results.
   4. Complex organization
   5. polymer.eg. DNA (deoxyribonucleic acid) or RNA (ribonucleic acid)
2. Define Regulation
   1. from 2 monosaccharides by dehydration reaction. one monomer gives up hydroxyl group, other H+, leaves H bond with O
   2. polymer.eg. DNA (deoxyribonucleic acid) or RNA (ribonucleic acid)
   3. Mechanisms maintain an organism's internal environment within limits of sustainable life
   4. made of glucose monomers coiled into helical shape, may be unbranched or branched. in plants, store energy. can withdraw glucose through hydrolysis.
   5. heat = total amount of energy temp = average speed of molecules
3. hydrocarbons
   1. Biosphere, ecosystem, community, population, organism, organ system, organ, tissues, cell, organelle, molecule
   2. surface of liquid remaining behind cools down as molecules with greatest energy leave
   3. composed only of H and C
   4. clinging of one substance to another, in h2o
   5. compound that accepts h ions and removes them from a solution. more basic, highe oh- concentration, lower h+ concentration
4. Trace elements
   1. clinging of one substance to another, in h2o
   2. Essential, but only in minute qualities. eg. iron, iodine
   3. from 2 monosaccharides by dehydration reaction. one monomer gives up hydroxyl group, other H+, leaves H bond with O
   4. Eukaryotes, nucleus and organelles, protists, plantae, animalia, fungi
   5. Cluster of atoms held together by a chemical bond
5. Organ
   1. heat = total amount of energy temp = average speed of molecules
   2. Unequal sharing of electrons. E- closer to the more electronegative atoms, that atom becomes slightly negative, other atom slightly positive
   3. Does a certain job
   4. meatures intensity of heat
   5. Individual living thing

True or False skip

1. evaporative cooling
   meatures intensity of heat

   True   False

2. dangers of radioactive isotopes
   phosphate group bonds to sugar of next monomer, created sugar-phosphate backbone. nitrogenous bases protrude. A and T pair up, C and G pair up to hold double helix together through hydrogen bonds

   True   False

3. Flow of energy
   makes polymers. Cells link monomers by removing molecules of water. For each monomer added, H2O is removed. One monomer loses OH- the other loses H+

   True   False

4. phospholipids
   Major component of cell membranes. Structurally similar to fats. Glycerol + 2 fatty acid chains + negatively charge phosphate group. Phosphate causes one end to be hydrophilic, other end hydrophobic. Forms Phospholipid Bi-layer, or membrane

   True   False

5. ionic bond
   amount of energy associated with movement of atoms and molecules in a body of matter

   True   False