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Q 1/93
Score 0
double-stranded nucleic acid that makes up genes and chromosomes
30
DNA
Q 2/93
Score 0
double spiral shape of the DNA molecule
30
Double Helix Model
93 questions
Q.
double-stranded nucleic acid that makes up genes and chromosomes
1
30 sec
Q.
double spiral shape of the DNA molecule
2
30 sec
Q.
simple sugar such as glucose that is a building block of carbohydrates
3
30 sec
Q.
organic compound such as DNA or RNA
4
30 sec
Q.
small molecule containing a sugar, phosphate group, and base that is a building block of nucleic acids
5
30 sec
Q.
compound found in living things that contains mainly carbon
6
30 sec
Q.
chain of nucleotides that alone or with another such chain makes up a nucleic acid
7
30 sec
Q.
chain of amino acids that alone or with other such chains makes up a protein
8
30 sec
Q.
chain of monosaccharides that makes up a complex carbohydrate such as starch
9
30 sec
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organic compound made up of amino acids
10
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single-stranded nucleic acid that helps make proteins
11
30 sec
Q.
molecule in lipids in which carbon atoms are bonded to as many hydrogen atoms as possible
12
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molecule in lipids in which some carbon atoms are bonded to other groups of atoms rather than to hydrogen atoms
13
30 sec
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energy needed to start a chemical reaction
14
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endothermic reaction in organisms
15
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Q.
chemical reaction that occurs inside the cells of living things
16
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Q.
exothermic reaction in organisms
17
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chemical reaction that absorbs energy
18
30 sec
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chemical reaction that releases energy
19
30 sec
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sum of all the biochemical reactions in an organism
20
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substance that forms as the result of a chemical reaction
21
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starting material in a chemical reaction
22
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solution with a pH higher than 7
23
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scale that is used to measure acidity
24
30 sec
Q.
difference in electrical charge between different parts of the same molecule
25
30 sec
Q.
mixture that has the same composition throughout
26
30 sec
Q.
type of chemical bond that forms between molecules: found between water molecules
27
30 sec
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Anything that has mass and takes up space.
28
30 sec
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Smallest particle of an element
29
30 sec
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A pure substance made of only one kind of atom.
30
30 sec
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positively charged particle.
31
30 sec
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A small particle in the nucleus of the atom, with no electrical charge.
32
30 sec
Q.
A subatomic particle that has a negative charge
33
30 sec
Q.
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.
34
30 sec
Q.
A group of atoms bonded together
35
30 sec
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The force that holds two atoms together
36
30 sec
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A substance produced in a chemical reaction.
37
30 sec
Q.
Any compound that forms H+ ions in solution.
38
30 sec
Q.
A substance that decreases the hydrogen ion concentration in a solution.
39
30 sec
Q.
transfer of electrons (usu metal to non metal)
40
30 sec
Q.
Molecule with an unequal distribution of charge, resulting in the molecule having a positive end and a negative end
41
30 sec
Q.
An abnormally low amount of water in the body.
42
30 sec
Q.
A chemical bond formed when two atoms share electrons.
43
30 sec
Q.
hydrogen ion concentration
44
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A range of values used to express the concentration of hydrogen ions in a solution.
45
30 sec
Q.
Attraction between molecules of the same substance.
46
30 sec
Q.
An attraction between molecules of different substances
47
30 sec
Q.
A very large organic molecule composed of many smaller molecules.
48
30 sec
Q.
Large macromolecules formed from monosaccharides.
49
30 sec
Q.
Examples are glucose, fructose, galactose.
50
30 sec
Q.
The starches and sugars present in foods. Provides energy.
51
30 sec
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Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.
52
30 sec
Q.
Long chains of amino acids. They are nutrients the body uses to build and maintain its cells and tissues.
53
30 sec
Q.
Building blocks of proteins
54
30 sec
Q.
DNA and RNA. These are macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus.
55
30 sec
Q.
Molecules that contain carbon (and hydrogen).
56
30 sec
Q.
Proteins that speed up chemical reactions.
57
30 sec
Q.
when two or more elements combine chemically such as water
58
30 sec
Q.
large organic molecules made of carbon, hydrogen, oxygen, nitrogen and in some cases sulfur....fish, egg, nuts...
59
30 sec
Q.
Fats, oils and waxes are all lipids
60
30 sec
Q.
Deoxyribonucleic acid....is the the genetic material that carries all the information about an organism that gets passed on from the parent to offspring
61
30 sec
Q.
Plays an important role in making proteins and is found in the cytoplasm
62
30 sec
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without water, chemical reaction would not take place
63
30 sec
Q.
Basic building block of all matter
64
30 sec
Q.
4 phases of matter
65
30 sec
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3 types of subatomic particles
66
30 sec
Q.
Dense, central part of an atom that contains protons and neutrons and has a positive charge
67
30 sec
Q.
Regions surrounding the nucleus that contains the electrons
68
30 sec
Q.
Number of electrons that the first energy level can hold
69
30 sec
Q.
Number of electrons that the second and third energy level can hold
70
30 sec
Q.
The number of protons in the nucleus of an atom
71
30 sec
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The number of protons plus the number of neutrons in the nucleus of an atom
72
30 sec
Q.
Table that lists all of the elements in order by increasing atomic number
73
30 sec
Q.
One or Two letter designation for each element
74
30 sec
Q.
Four elements that make up around 95% of the mass of all organisms on Earth.
75
30 sec
Q.
A substance formed by the union of two or more elements or ingredients in a definite proportion by weight.
76
30 sec
Q.
A group of two or more atoms liked together by sharing electrons in a chemical bond.
77
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Q.
Substances composed of one or more substances that are not chemically combined and can be separated by physical means
78
30 sec
Q.
A homogenous mixture composed of a solvent (usually water) and a solute.
79
30 sec
Q.
Rule which states that atoms are most stable when they have a full outermost (valence) shell of electrons.
80
30 sec
Q.
The outermost energy level of an atom or ion
81
30 sec
Q.
Electrons found in the valence shell of an atom or ion
82
30 sec
Q.
An atom, or group of atoms that have gained or lost one or more electrons. A charged particle
83
30 sec
Q.
An atom, or group of atoms that has lost one or more electrons and is now positively charged
84
30 sec
Q.
An atom or group of atoms that has gained one or more electrons and is now negatively charged
85
30 sec
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Atoms that have the same atomic number but different mass numbers. Due to different numbers of neutrons in the nucleus
86
30 sec
Q.
A solution that has an excess of OH- ions.
87
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Q.
A substance that changes color in the presence of a specific substance. e.g. Litmus paper
88
30 sec
Q.
A substance which resists a change in pH.
89
30 sec
Q.
force that holds molecules together
90
30 sec
Q.
process that changes some chemical substances into others
91
30 sec
Q.
pure substance that cannot be broken down into other types of substances
92
30 sec
Q.
chemical reaction that occurs inside the cells of living things
