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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. Made of Carbon - hydrogen - and oxygen. The Ratio of H and O is always 2:1. Just like water.
Carbohydrates
waxes.
Hydrogen bond
Element
2. Provide a moisture barrier.
Reactants
polysaccharide
Glycogen.
waxes.
3. When threee monosaccharide's combine.
Exothermic reaction
polymers
phospholipids
trisaccharide
4. The result of a chemical reaction.
Products (Chemical Reaction)
peptide bonds
Electron cloud
nucleotides
5. 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.
Fats
Starches
Watson Crick model
Energy level
6. Also referred to as the electron shell and orbital. It is the 3 dimensional space that electron orbit the nucleus.
Enzymes
Hydrogen bond
Electron cloud
phospholipids
7. An atom that has the same number of protons and electrons.
Combination (Chemical reaction)
Uncharged atom
nucleotides
trisaccharide
8. When a compund breaks apart and forms a new compund with a free reactant.
Replacement
acid
Carbohydrates
Valence shell
9. The last shell of the electron cloud. Atoms are more stable when this shell is full.
Atoms
ribose
Valence shell
Endothermic reaction
10. When two or more molecules react with each other to form one or more moleculte types.
Enzymes
Chemical reaction
Sugar
deoxyribose
11. Center of an atom. The number of protons in the nucleus is the same as the atomic number on the periodic table of elements.
Starches
Nucleus
Neutralize each other when combined in water.
base
12. Neutral charged particles in the nucleus of an atom.
Products (Chemical Reaction)
Endothermic reaction
Neutron
Starches
13. This is a catlyst. All catalysts end with this.
-ase (Ending of compound)
lipids
Neutron
Properties of matter
14. Form components of cel membranes.
Valence shell
phospholipids
Starches
Organic compounds
15. A compund that is able to dissolve many types of organic and inorganic compunds
trisaccharide
Starch
Water
Amino Acids
16. The basic sugar unit.
Covalent bond
monosaccharide
deoxyribose
phospholipids
17. Deoxyribonucleic acid. Two strands that pair up via a hydrogen bond. They form a double helix shape.
DNA
Enzymes
A Covalent bond
Valence shell
18. A chemical that donates protons when dissolved in water. Below 7 on the pH scale
Amino Acids
polar molecules
acid
ribose
19. In a chemical reaction when a compound breaks down into components
monosaccharide
Decomposition (Chemical reaction)
polysaccharide
Catalyst
20. Contain Carbon - Hydrogen - Oxygen - Nitrogen - and sometimes sulfur and phospoirus. 20 common amino acids that make thousands of different proteins.
Carbohydrates
proteins
Amino Acids
trisaccharide
21. The bond that holds monmers together to form polymers.
nucleotides
peptide bonds
phospholipids
ionic bond
22. Contain hydrogen - oxygen - nitrogen - sulfur - phosporus - and some metal ions.
Carbohydrates
Water
-ase (Ending of compound)
Organic molecules
23. 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
ionic bond
RNA
Starches
polymers
24. Ribonucleic acid. Generally a single strand
Neutralize each other when combined in water.
RNA
Organic molecules
ionic bond
25. A type of carbohydrate
monomer
Sugar
waxes.
Enzymes
26. Molecules that have regions of a partial charge. Water molecules have a positive hydrogen charge.
Organic molecules
Products (Chemical Reaction)
polar molecules
Organic compounds
27. A chemical bond between atoms when they share electrons between their valence shells. These are the strongest chemical bonds.
Replacement
ion
ionic bond
Covalent bond
28. What is the strongest chemical bond?
Nucleus
A Covalent bond
molecule
Fats
29. A type of carbohydrate
Starch
Chemical reaction
Cellulose
disaccharide
30. Positive charged particles in the nucleus of an atom.
Chemical reaction
Endothermic reaction
Protons
Valence shell
31. Sugare molecule in DNA
Valence shell
ionic bond
Covalent bond
deoxyribose
32. When four or more monosaccharide's combine.
Electron cloud
Carbohydrates
nucleotides
polysaccharide
33. A chemical that accepts protons when dissolved in water. Above 7 on the pH scale.
base
DNA
trisaccharide
monosaccharide
34. A polysaccharide made of joined glucose units. Used by many animals for short term energy. Found in muscle and liver tissue.
RNA
monomer
Uncharged atom
Glycogen.
35. Negative charged particles of an atom. They orbit the nucleus. They have much less mass than protons and neutrons.
trisaccharide
monosaccharide
Electrons
Atoms
36. Another name for proteins. Nameds this because of the peptide bonds that monomers use to connect together.
polypeptide
base
Carbohydrates
Starch
37. DNA and RNA. These are polymers (proteins)
First law of thermodynamics
Nucleic Acids
Properties of matter
Atoms
38. When two or more atoms form a unique substance via a chemical bond. Water is an example.
Starch
compound
Covalent bond
Neutralize each other when combined in water.
39. Sugar molecule in RNA
polymers
Uncharged atom
Organic compounds
ribose
40. When two monosaccharide units form together. Glucose and fructose make table sugar. A water molecule is liberated when one is formed.
Uncharged atom
disaccharide
hexo monosaccharide
Amino Acids
41. Long term energy storage.
Starch
Fats
monosaccharide
lipids
42. The double helix model of DNA.
Watson Crick model
Reactants
Neutralize each other when combined in water.
nucleotides
43. The force of attraction between water molecules that hold them together . A weak chemical bond.
Chemical reaction
Amino Acids
Starches
Hydrogen bond
44. Six carbon sugars. The most commone monosaccharide. They are usually ring shaped.
deoxyribose
Electron cloud
Amino Acids
hexo monosaccharide
45. A substance that can't be broken down into any other substance. The simplest form of an element is an atom.
Starch
Neutralize each other when combined in water.
compound
Element
46. Connected monomers (Amino Acids).
Neutron
polymers
Reactants
Uncharged atom
47. A reaction that requires energy
polypeptide
Endothermic reaction
polymers
A Covalent bond
48. A single amino acid
Watson Crick model
Neutralize each other when combined in water.
monomer
Electron cloud
49. When positive and negative ions are attracted to each other. Weaker than a covalent bond. Table salt is an ionic bond.
phospholipids
Replacement
polysaccharide
ionic bond
50. The reacting molecules of a chemical reaction.
Exothermic reaction
Reactants
monomer
Protons