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Test your basic knowledge |
CLEP Biology: Chemistry Of Biology
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Study First
Subjects
:
clep
,
science
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What is the strongest chemical bond?
Endothermic reaction
Organic molecules
A Covalent bond
Starch
2. This is a catlyst. All catalysts end with this.
Starches
-ase (Ending of compound)
Valence shell
Water
3. The force of attraction between water molecules that hold them together . A weak chemical bond.
Hydrogen bond
polymers
nucleotides
Atoms
4. Sugare molecule in DNA
Catalyst
Starches
peptide bonds
deoxyribose
5. When two or more atoms form a unique substance via a chemical bond. Water is an example.
compound
disaccharide
RNA
monosaccharide
6. Made of Carbon - hydrogen - and oxygen. The Ratio of H and O is always 2:1. Just like water.
Neutralize each other when combined in water.
Electrons
ionic bond
Carbohydrates
7. Deoxyribonucleic acid. Two strands that pair up via a hydrogen bond. They form a double helix shape.
Electrons
Replacement
acid
DNA
8. All reaction spread energy which tend to diminish it's availability.
phospholipids
Second law of thermodynamic
Replacement
Electron cloud
9. When threee monosaccharide's combine.
trisaccharide
Decomposition (Chemical reaction)
Nucleus
Endothermic reaction
10. A reaction that requires energy
Endothermic reaction
lipids
Neutron
phospholipids
11. A substance that can't be broken down into any other substance. The simplest form of an element is an atom.
Neutralize each other when combined in water.
Element
Catalyst
Atoms
12. A reaction that produces energy
RNA
monosaccharide
Exothermic reaction
Carbohydrates
13. Negative charged particles of an atom. They orbit the nucleus. They have much less mass than protons and neutrons.
Enzymes
Hydrogen bond
Neutron
Electrons
14. Monomers that form nucleic acids. Each one has a sugar group and a phosphate group with a nitrogen base.
Protons
Water
Electron cloud
nucleotides
15. The building blocks of all matter.
ionic bond
Atoms
acid
Neutralize each other when combined in water.
16. The basic sugar unit.
Uncharged atom
Enzymes
Second law of thermodynamic
monosaccharide
17. Contain hydrogen - oxygen - nitrogen - sulfur - phosporus - and some metal ions.
Covalent bond
Organic molecules
phospholipids
Element
18. The result of a chemical reaction.
Exothermic reaction
Products (Chemical Reaction)
A Covalent bond
base
19. In a chemical reaction when a compound breaks down into components
polar molecules
peptide bonds
Decomposition (Chemical reaction)
lipids
20. Two or more atoms held together by a covalent bond.
Fats
Carbohydrates
molecule
Properties of matter
21. Center of an atom. The number of protons in the nucleus is the same as the atomic number on the periodic table of elements.
Second law of thermodynamic
proteins
Nucleus
Cellulose
22. A single amino acid
Catalyst
polysaccharide
Neutron
monomer
23. The reacting molecules of a chemical reaction.
Catalyst
Reactants
Enzymes
trisaccharide
24. When two monosaccharide units form together. Glucose and fructose make table sugar. A water molecule is liberated when one is formed.
disaccharide
Combination (Chemical reaction)
Covalent bond
-ase (Ending of compound)
25. A chemical that accepts protons when dissolved in water. Above 7 on the pH scale.
base
First law of thermodynamics
deoxyribose
Organic compounds
26. Most common starch in a plant cell. It is a long chain of water insoluable polysaccharides
nucleotides
-ase (Ending of compound)
Cellulose
Hydrogen bond
27. That matter and energy is neither created nor destroyed.
polysaccharide
Uncharged atom
Properties of matter
First law of thermodynamics
28. Acids and bases. When combined in water they produce water and a salt (ionic compound)
Neutralize each other when combined in water.
Watson Crick model
DNA
Neutron
29. Another name for proteins. Nameds this because of the peptide bonds that monomers use to connect together.
polypeptide
Starch
lipids
Carbohydrates
30. Results of the structure of atoms and their interactions with each other.
Properties of matter
waxes.
compound
Cellulose
31. Contain Carbon - Hydrogen - Oxygen - Nitrogen - and sometimes sulfur and phospoirus. 20 common amino acids that make thousands of different proteins.
Organic molecules
Amino Acids
hexo monosaccharide
Neutron
32. A chemical that donates protons when dissolved in water. Below 7 on the pH scale
acid
Neutron
Covalent bond
Atoms
33. When compounds combine.
Enzymes
hexo monosaccharide
Combination (Chemical reaction)
Decomposition (Chemical reaction)
34. When a compund breaks apart and forms a new compund with a free reactant.
Watson Crick model
Enzymes
base
Replacement
35. Provide a moisture barrier.
waxes.
monomer
peptide bonds
Glycogen.
36. A compund that is able to dissolve many types of organic and inorganic compunds
Organic molecules
Water
-ase (Ending of compound)
Combination (Chemical reaction)
37. A charged atom. More protons that electrons makes a positive ion and more electrons than protons makes a negative ion.
Neutralize each other when combined in water.
Second law of thermodynamic
ion
polymers
38. A chemical bond between atoms when they share electrons between their valence shells. These are the strongest chemical bonds.
Covalent bond
polypeptide
Properties of matter
Cellulose
39. Connected monomers (Amino Acids).
Starches
polymers
Sugar
Valence shell
40. Compounds that contain carbon.
Second law of thermodynamic
Organic compounds
phospholipids
hexo monosaccharide
41. When four or more monosaccharide's combine.
polysaccharide
deoxyribose
Sugar
Exothermic reaction
42. Positive charged particles in the nucleus of an atom.
A Covalent bond
Starches
Protons
Watson Crick model
43. When two or more molecules react with each other to form one or more moleculte types.
Chemical reaction
Combination (Chemical reaction)
Enzymes
RNA
44. Long term energy storage.
Element
Fats
Water
monosaccharide
45. A type of carbohydrate
Element
Starch
Fats
ion
46. When positive and negative ions are attracted to each other. Weaker than a covalent bond. Table salt is an ionic bond.
ionic bond
monosaccharide
Energy level
Watson Crick model
47. An atom that has the same number of protons and electrons.
Uncharged atom
ion
Enzymes
deoxyribose
48. Organic compound made of carbon - hydrogen and oxygen. Ratio of H to O is alway greater than 2:1. Includes waxes - steroids - phospholipids - and fats.
polar molecules
Products (Chemical Reaction)
lipids
Organic molecules
49. Six carbon sugars. The most commone monosaccharide. They are usually ring shaped.
Water
Reactants
hexo monosaccharide
Starch
50. A substance that changes the speed of a reaction. The catalyst is not affected at all during this reaction. All catalyst end in -ase.
DNA
Amino Acids
Catalyst
Glycogen.