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