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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. Also referred to as the electron shell and orbital. It is the 3 dimensional space that electron orbit the nucleus.
Covalent bond
Electron cloud
DNA
Fats
2. Monomers that form nucleic acids. Each one has a sugar group and a phosphate group with a nitrogen base.
nucleotides
Electron cloud
Electrons
monosaccharide
3. In every living cell. Large chains of amino acids.
proteins
Nucleic Acids
Glycogen.
RNA
4. The amount of energy in a electron cloud. The weakest level is the shell closest to the nucleus. As the shell gets stronger more electrons may fill it. Electron fill the shell closest to the nucleus.
hexo monosaccharide
Energy level
Decomposition (Chemical reaction)
trisaccharide
5. All reaction spread energy which tend to diminish it's availability.
Second law of thermodynamic
nucleotides
monosaccharide
waxes.
6. The building blocks of all matter.
Properties of matter
Atoms
Decomposition (Chemical reaction)
proteins
7. Long term energy storage.
A Covalent bond
Atoms
Fats
Covalent bond
8. Deoxyribonucleic acid. Two strands that pair up via a hydrogen bond. They form a double helix shape.
monomer
DNA
Carbohydrates
Uncharged atom
9. Acids and bases. When combined in water they produce water and a salt (ionic compound)
Neutralize each other when combined in water.
Decomposition (Chemical reaction)
Replacement
Catalyst
10. A substance that changes the speed of a reaction. The catalyst is not affected at all during this reaction. All catalyst end in -ase.
polysaccharide
disaccharide
Catalyst
Element
11. The reacting molecules of a chemical reaction.
waxes.
Watson Crick model
Properties of matter
Reactants
12. Connected monomers (Amino Acids).
Chemical reaction
Uncharged atom
polymers
acid
13. Compounds that contain carbon.
Organic compounds
compound
ion
RNA
14. The bond that holds monmers together to form polymers.
trisaccharide
Properties of matter
A Covalent bond
peptide bonds
15. Positive charged particles in the nucleus of an atom.
ion
Catalyst
acid
Protons
16. When four or more monosaccharide's combine.
Organic compounds
Electron cloud
polysaccharide
Starch
17. DNA and RNA. These are polymers (proteins)
Sugar
First law of thermodynamics
Nucleic Acids
Combination (Chemical reaction)
18. A compund that is able to dissolve many types of organic and inorganic compunds
monosaccharide
Water
Nucleic Acids
A Covalent bond
19. That matter and energy is neither created nor destroyed.
proteins
Sugar
First law of thermodynamics
nucleotides
20. Sugar molecule in RNA
Enzymes
ribose
Hydrogen bond
Nucleus
21. Molecules that have regions of a partial charge. Water molecules have a positive hydrogen charge.
polar molecules
peptide bonds
ion
Enzymes
22. The double helix model of DNA.
monosaccharide
Neutron
proteins
Watson Crick model
23. When positive and negative ions are attracted to each other. Weaker than a covalent bond. Table salt is an ionic bond.
ion
Catalyst
compound
ionic bond
24. The last shell of the electron cloud. Atoms are more stable when this shell is full.
Neutron
Valence shell
acid
ribose
25. Center of an atom. The number of protons in the nucleus is the same as the atomic number on the periodic table of elements.
Replacement
Cellulose
Nucleus
trisaccharide
26. Results of the structure of atoms and their interactions with each other.
Properties of matter
monosaccharide
hexo monosaccharide
Nucleus
27. Two or more atoms held together by a covalent bond.
polysaccharide
molecule
hexo monosaccharide
ionic bond
28. A type of carbohydrate
phospholipids
hexo monosaccharide
Sugar
Protons
29. A type of carbohydrate
Starch
lipids
Protons
Watson Crick model
30. When two or more molecules react with each other to form one or more moleculte types.
trisaccharide
Neutralize each other when combined in water.
peptide bonds
Chemical reaction
31. Negative charged particles of an atom. They orbit the nucleus. They have much less mass than protons and neutrons.
Electrons
peptide bonds
DNA
Water
32. Sugare molecule in DNA
Cellulose
monosaccharide
deoxyribose
Water
33. Another name for proteins. Nameds this because of the peptide bonds that monomers use to connect together.
polypeptide
Chemical reaction
proteins
Organic compounds
34. Six carbon sugars. The most commone monosaccharide. They are usually ring shaped.
Exothermic reaction
hexo monosaccharide
A Covalent bond
RNA
35. A chemical that donates protons when dissolved in water. Below 7 on the pH scale
phospholipids
Reactants
peptide bonds
acid
36. What is the strongest chemical bond?
Replacement
A Covalent bond
lipids
ionic bond
37. A chemical that accepts protons when dissolved in water. Above 7 on the pH scale.
Nucleus
Exothermic reaction
base
Water
38. A polysaccharide. Plant's store starches in their cell's for future energy. Also used for structure in a plant's cell. The most common is cellulose
Electrons
Replacement
polar molecules
Starches
39. In a chemical reaction when a compound breaks down into components
Organic compounds
Valence shell
Decomposition (Chemical reaction)
Water
40. Contain Carbon - Hydrogen - Oxygen - Nitrogen - and sometimes sulfur and phospoirus. 20 common amino acids that make thousands of different proteins.
waxes.
monosaccharide
Element
Amino Acids
41. When two monosaccharide units form together. Glucose and fructose make table sugar. A water molecule is liberated when one is formed.
DNA
Glycogen.
proteins
disaccharide
42. The result of a chemical reaction.
Starch
Products (Chemical Reaction)
Watson Crick model
Enzymes
43. When threee monosaccharide's combine.
trisaccharide
Properties of matter
Watson Crick model
Carbohydrates
44. When two or more atoms form a unique substance via a chemical bond. Water is an example.
Starch
Neutron
compound
Watson Crick model
45. An atom that has the same number of protons and electrons.
Uncharged atom
polypeptide
Replacement
Cellulose
46. Neutral charged particles in the nucleus of an atom.
Neutron
proteins
Covalent bond
waxes.
47. A reaction that requires energy
Endothermic reaction
polymers
Properties of matter
Combination (Chemical reaction)
48. A polysaccharide made of joined glucose units. Used by many animals for short term energy. Found in muscle and liver tissue.
disaccharide
polymers
Combination (Chemical reaction)
Glycogen.
49. The force of attraction between water molecules that hold them together . A weak chemical bond.
First law of thermodynamics
waxes.
Hydrogen bond
RNA
50. Contain hydrogen - oxygen - nitrogen - sulfur - phosporus - and some metal ions.
Organic molecules
Valence shell
monosaccharide
Organic compounds