Courses

Molecular Biology - Test 1


1. What are the building blocks of nucleic acids?
    A. sugars
    B. nitrogenous bases
    C. peptides
    D. nucleotides


2. What is the presence of a membrane-enclosed nucleus characteristic of?
    A. prokaryotic cells
    B. eukaryotic cells
    C. living organisms
    D. bacteria


3. Dehydration synthesis leads to formation of?
    A. monomers
    B. polymers
    C. water and polymers
    D. none of the above


4. Cellulose and starch are examples of?
    A. monosaccharides
    B. disaccharides
    C. lipids
    D. polysaccharides


5. Plant cell walls contain which of the following in abundance?
    A. starch
    B. cellulose
    C. glycogen
    D. lactose


6. Saturated fats have all of the following characteristics EXCEPT which of the following?
    A. they are solid at room temperature
    B. they have single bonds within the carbon chain
    C. they are usually obtained from animal sources
    D. they tend to dissolve in water easily


7. Phospholipids are important components of?
    A. the plasma membrane of cells
    B. the ring structure of steroids
    C. the waxy covering on leaves
    D. the double bond in hydrocarbon chains


8. Based on its structure, where is cholesterol found in the plasma membrane?
    A. on the extracellular surface
    B. embedded with the phospholipid heads
    C. within the tail bilayer
    D. attached to the intracellular surface


9. What are the monomers that make up proteins called?
    A. nucleotides
    B. disaccharides
    C. amino acids
    D. chaperones


10. Nucleotides of DNA may contain which of the following?
    A. deoxyribose, thymine, and a phosphate group
    B. deoxyribose, uracil, and a phosphate group
    C. ribose, uracil, and a phosphate group
    D. ribose, thymine, and a phosphate group







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