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