Unit One Study Guide Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
name the subatomic particle that has a mass of on and no charge: | neutron |
name the subatomic particle that has a mass of one and a positive charge: | proton |
name the subatomic particle that has a mass of zero and a negative charge: | electron |
define atom: | basic unit of matter |
define molecule: | two or more atoms linked by chemical bonds |
define covalent bond: | where an electron is shared between two atoms |
define ion: | an atom with a positive of negative charge |
define ionic bond: | transfer of electrons from one atom to another, build up of charge; opposites attract |
define hydrogen bond: | weak bond between molecules |
define synthesis: | small molecules linked into larger ones by chemical bonds |
define decomposition: | larger molecule, breakdown of chemical bonds, formation of smaller molecules |
define isotope/radioisotope: | element that has a different mass # than usual |
express the following concentration is scientific notation and as a pH: 0.0001M | 1x10exp-5M pH=5 |
express the following concentration is scientific notation and as a pH: 0.0000000000001M | 1x10exp-13M pH=13 |
express the following concentration is scientific notation and as a pH: 0.01M | 1x10exp0 pH=0 |
the pH scale measure the __________________ of a solution | H+ concentration |
what pH range(s) include acids: | <7 |
what range(s) includes bases: | >7 |
what range(s) includes neutral: | 7 |
if a substance has a pH of 9, then what is its [H+] concentration? | 10exp-9M |
if a substance has a pH of 3, then what is its [H+] concentration? | 10exp-9M |
when a small amount of acid or base is added to a buffered solution what happens to the pH? why? | it stays approx the same. buffer takes up and releases H+ |
when a small amount of acid is added to an unbuffered solution what happens to the pH? why? | it goes down. acids add H+ to a solution |
which of these will change the pH of a solution: HCL or NaCl? why? | HCl. because it is an acid |
organic molecules contain: | carbon |
which chemical reactions break down large molecules? | decomposition |
which chemical reactions use small molecules to build large ones: | synthesis |
name the four biological molecules and give the basic units and function for each: | carbohydrates; monosaccharides; energy/building blocks lipids; fatty acids and glycerol; energy/membranes proteins; amino acids; antibodies/enzymes/transport molecules nucleic acids; nucleotides; genetic info/energy transporter |
define peptide: | short chain of amino acids linked by peptide bonds |
define polypeptide: | long chain of amino acids |
define protein: | two or more poly peptides linked by weak bonds |
define peptide bond: | covalent bond |
classify and give a role for glucose: | carbohydrate (monosaccharide); universal cellular fuel |
classify and give a role for triglyceride: | lipid; stores energy |
classify and give a role for DNA: | nucleic acid; genetic material |
classify and give a role for ATP: | nucleic acid (nucleotide); carries energy |
classify and give a role for cholesterol: | lipid; membrane component |
classify and give a role for enzyme: | protein; acts as a biological catalyst |
classify and give a role for phospholipid: | lipid; membrane component |
classify and give a role for hemoglobin: | protein; carries oxygen |
classify and give a role for antibody: | protein; defense agains disease |
classify and give a role for glycogen: | carbohydrate; stores energy in liver and muscles |
classify and give a role for RNA: | nucleic acid; transfers genetic material |
a protein that undergoes a change in structure and loss of function is ____________ | denatured |
DNA is made up of: | adenine, thymine, cytosine, guanine |
RNA is made up of: | adenine, uracil, cytosine, guanine |
unsaturated fatty acids have at least one ___________ between carbons while saturated fatty acids do not. | double bond |
identify these enzyme terms:substrate active site product | substrate: chemical entering an enzyme reaction active site: part of the enzyme that is doing the reaction product: substrate changed to product by enzyme |
enzymes carry out reactions A. quickly B. slowly | A |
enzymes carry out reactions A. only once B. many times | B |
enzymes A. carry out many types of chemical reactions B. are specialists | B |
enzymes are named for their ____________ and usually end in the letters ____ | substrates; ase |
Created by:
twilight52
Popular Science sets