Sample Questions for Lecture Exam I

1. Glycogen, glucose and starch are all examples of:
     a) lipids  b) proteins  c) carbohydrates  d) nucleic acids  e) none of the above

2. Normal temperature regulation by the body is an example of:
     a) hierarchical levels of organization  b) a negative feedback system  c) a positive feedback system 
     d) the
effects of oxytocin  e) none of the above

3. The bonding properties of an atom are determined by the number of electrons in its:

     a) nucleus  b) lowest shell c) bonding partner  d) valence shell  e) electrons have nothing to do
        with bonding

4.  A solution has a pH of 8.  What is the concentration of hydronium ions in the solution?
     a) 10-1  b) 10-3  c) 10-6  d) 10-8  e) 10-10

5. Which is not true of plasma membrane structure?
     a) double layer of phospholipids  b) embedded proteins are present  c) cholesterol is present 
     d) it contains nucleic acids  e) it is semipermeable

6. The anticodon is a:
     a) sequence of 3 amino acids  b) sequence of 3 nucleotides on a DNA molecule 
     c) sequence of 3 nucleotides on an mRNA molecule  d) sequence of 3 nucleotides on a tRNA
         molecule  e) sequence of 3 nucleotides on an rRNA molecule

7. Which is not true of pseudostratified ciliated columnar epithelium?
     a) it occurs in the trachea  b) it appears to have two rows of nuclei  c) it never contains goblet cells 
     d) some cells fail to reach the apical surface  e) it is a simple epithelium

8. Specialized cells of the stratum spinosum that protect the skin from micro-organisms and attack
    cancerous cells are called:

     a) Merkel’s cells  b) melanocytes  c) Langerhan’s cells  d) keratinocytes  e) astrocytes


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