Bio 2 Mid-term Exam Review (Fall 2014)
- 1.Which of the following is a polymer of amino acids?
- A.
Protein
- B.
Carbohydrate
- C.
Lipid
- D.
Nucleic Acid
- 2.Which of the following is a polymer of nucleotides?
- A.
Nucleic Acid
- B.
Protein
- C.
Carbohydrate
- D.
Lipid
- 3.Which of the following monomers make up a lipid?
- A.
Glycerol and fatty acid
- B.
Glycerol and amino acids
- C.
Glycerol and nucleic acids
- D.
Thymine and guanine
- 4.Which of the following is NOT a nucleotide found in DNA?
- A.
Adenine
- B.
Cytosine
- C.
Uracil
- D.
Guanine
- 5.Which of the following is a structural form of carbohydrate?
- A.
Cellulose
- B.
Starch
- C.
Enzyme
- D.
RNA
- 6.Atherosclerosis is a disease caused by a build-up of plaque inside arteries. What polymer is the main component of the plaque formation?
- A.
Saturated fatty acids
- B.
Unsaturated fatty acids
- C.
Amino acids
- D.
Steroid
- 7.In biological systems, proteins are said to be denatured when...
- A.
The protein is folded and layered.
- B.
The protein changes shape and becomes non-functional.
- C.
The protein changes into an enzyme.
- D.
The protein is artificial.
- 8.The functional group -NH2 is called the ____.
- A.
Amino group
- B.
Acid group
- C.
Hydroxide group
- D.
Fatty acid
- 9.How many amino acids are found in humans?
- A.
12
- B.
16
- C.
20
- D.
24
- 10.Which of the following describes DNA?
- A.
It contains uracil.
- B.
It contains the sugar ribose.
- C.
It controls the production of proteins.
- D.
It is made of amino acids.
- 11.Organic compounds always contain the element ____.
- A.
Carbon
- B.
Nitrogen
- C.
Oxygen
- D.
Organium
- 12.Which of the following is NOT true of water?
- A.
It resists change in temperature.
- B.
It is considered the "universal solvent".
- C.
It can diffuse through lipids easily.
- D.
It has unique properties due to its polarity.
- 13.There are literally hundreds of thousands of different organic molecules. Which statement best explains how this is possible?
- A.
Elements can make an unlimited number of chemical bonds.
- B.
Carbon is unique in that it can make four chemical bonds.
- C.
Carbon can make twenty bonds to other carbon atoms.
- D.
Organic molecules are acidic.
- 14.If we find life elsewhere in the universe it is likely to look exactly like life on Earth because there is a limited number of proteins that can be formed.
- A.
True
- B.
False
- 15.The specific chemical that an enzyme will act on is called a(n) ...
- A.
Substrate.
- B.
Protein.
- C.
Amino acid.
- D.
Catalyst.
- 16.Which phrase best describes the effect of a catalyst on a chemical reaction?
- A.
Decreases the rate of reaction
- B.
Increases the temperature
- C.
Decreases the activation energy
- D.
Increases the volume of the reactants
- 17.What type of polymer is an enzyme?
- A.
Protein
- B.
Carbohydrate
- C.
Lipid
- D.
Nucleic Acid
- 18.
What part is labeled B?- A.
Phosphate
- B.
Ribose Sugar
- C.
Nitrogen Base
- D.
Nucleotide
- 19.
What part is labeled C?
- A.
Phosphate
- B.
Ribose Sugar
- C.
Nitrogen Base
- D.
Nucleotide
- 20.
What part is labeled A?
- A.
Phosphate
- B.
Ribose Sugar
- C.
Nitrogen Base
- D.
Nucleotide
- 21.
This is a diagram of a monomer called a ___.
- A.
Phosphate
- B.
Ribose Sugar
- C.
Nitrogen Base
- D.
Nucleotide
- 22.
This is a diagram of a monomer that is used to build ___.
- A.
Carbohydrates
- B.
Proteins
- C.
Nucleic Acids
- D.
Lipids
- 23.Which of the following is not one of the top elements in the body?
- A.
Carbon
- B.
Hydrogen
- C.
Nitrogen
- D.
Calcium
- 24.Which of the following is a "4%" element in the body?
- A.
Carbon
- B.
Calcium
- C.
Iron
- D.
Hydrogen
- 25.Which of the following trace elements can prevent goiters?
- A.
Iron
- B.
Iodine
- C.
Manganese
- D.
Zinc
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