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- 1. Multiple Choice
What are the four biomolecules?
Adenine, guanine, cytosine, and thymine.
Water, air, earth, and fire.
Sodium, Oxygen, Hydrogen, and Nitrogen
Proteins, carbohydrates, nucleic acids, and lipids.
- 2. Multiple Choice
Which biomolecule form muscles?
Nucleic Acid
Proteins
Carbohydrates
Lipids
- 3. Multiple Choice
If you want a reaction to speed up you need an-------
nerve cell
enzyme
nucleic acid
blood sugar
- 4. Multiple Choice
Which biomolecule are in starches and fibers?
Lipids
Carbohydrates
Proteins
Nucleic acid
- 5. Multiple Choice
Which biomolecule is your main source of quick energy?
Carbohydrates
Proteins
Lipids
Nucleic Acid
- 6. Multiple Choice
Which biomolecule is made of amino acids?
Nucleic acid
Lipids
Carbohydrates
Proteins
- 7. Multiple Choice
The process that builds molecules by removing water to bind them together is -----
Lysis
Hydrolysis
Protein synthesis
Dehydration synthesis
- 8. Multiple Choice
The chemical reaction that breaks down a molecule by adding water is -----
Dehydration
Dehydration synthesis
Hydrolysis
Hydrophobia
- 9. Multiple Choice
Identify the molecule.
Monosaccharides
Disaccharides
Polysaccharides
Unisaccharides
- 10. Multiple Choice
A monomer is -
a building block for polymers
a single atom
a single element
is an inorganic molecule
- 11. Multiple Choice
What does the word organic mean?
has carbon
has nitrogen
has oxygen
has sufur
- 12. Multiple Choice
What are the functions of lipids?
quick source of energy
builds muscles, skin, and enzymes
stores genetic information
stores energy, insulation, and protection
- 13. Multiple Choice
Which foods are high in proteins?
Meats, cheeses, milk, eggs
Breads, pasta, grains
Butter, oil, lard
Apples, Bananas, Grapes
- 14. Multiple Choice
What is the function of a nucleic acid?
Stores genetic information
Stores energy
Stores energy
Builds structures
- 15. Multiple Choice
What suffix (word ending) is used in the names of most carbohydrates?
-ase
-nic
-ose
-yme
- 16. Multiple Choice
This is one job proteins do NOT have in the body
transport things through cell membrane
speed up chemical reactions
structure for tissues and organs
insulation
- 17. Multiple Choice
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
lipids
proteins
carbohydrates
nucleic acids
- 18. Multiple Choice
Building blocks of polymers.
monomer
polypeptide
monosaccharide
glycerol
- 19. Multiple Choice
The four most common elements that make up all living things are carbon, hydrogen -
nitrogen, and iron.
oxygen, and nitrogen.
calcium, and phosphorus.
oxygen, and iron.
- 20. Multiple Choice
What is the name for the mechanism of enzyme activity?
lock and key
jigsaw puzzle
hammer and nail
two hands pattern
- 21. Multiple Choice
What is the purpose of an enzyme?
give permission for the reaction
raise activation energy
speed up reactions
control how many reactions occur
- 22. Multiple Choice
Enzymes are considered to be
Lipids
Carbohydrate
Protein
Nucleic Acid
- 23. Multiple Choice
The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements?
Enzymes function best at a specific temperature.
The body needs to be warm to prevent hypothermia.
The body is kept relatively warm to prevent too much enzyme action.
There is no connection between the two statements.
- 24. Multiple Choice
The graph below shows how the activity of an enzyme changes over a range of pH values. Which of the following conclusions can be drawn from this graph?
The optimum pH of the enzyme is 6.6.
The optimum pH of the enzyme is 5.8
The enzyme’s activity continually increases as pH increases from 5.0 to 9.0
The enzyme’s activity is greater around pH of 8.0 than around pH of 5.0.
- 25. Multiple Choice
The diagram below illustrates a biochemical process that occurs in organisms. What is another name for the substance labeled "catalyst"?
Enzyme
Inorganic compound
Hormone
Antibody
- 26. Multiple Choice
The enzyme lactase will break down the sugar lactose into which of the following components?
monosaccharides
nucleic acids
amino acids
phospholipids
- 27. Multiple Choice
Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 °C or higher. At the temperature of 50 °C, how will the enzymes in these bacterial cells most likely be affected?
The enzymes will be destroyed by lysosomes
The enzymes will lose their bond structure and fall apart.
The enzymes will require less energy to function than at 70 °C.
The enzymes will not increase the rate of reactions as much as they would at 70 °C.
- 28. Multiple Choice
If there is 10% Adenine in a given DNA molecule, what percent of the DNA will be Thymine?
40%
90%
80%
10%
- 29. Multiple Choice
Which mRNA strand will be made using this strand of DNA?
3' A A C T G C T T A C T G 5'
5' U U G A C G A A U G A C 3'
3' U U G A C G A A U G A C 5'
5' T T G A C G A A T G A C 3'
5' A A C T G C T T A C T G 3'
- 30. Multiple Choice
The rule we have today that tells us how nitrogen bases pair together is called _____________ .
Base Pairing Rule
Charmander's Rule
Chargaff's Rule
Nucleic Acid Rule
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