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