Test #1 Sample Test B

1. Which of the following is only found in Gram positive bacterial cells?
a. outer membrane
b. teichoic acid
c. ribosomes
d. plasma membrane
e. peptidoglycan
2. A common cause of extinction level events is which of the following?
a. disease
b. a burst of X-rays causing significant mutation
c. meteorites and comets
d. lightening
e. oxygen in the atmosphere
3. Gram positive cell walls are composed of petidoglycan and which of the following?
a. chitin
b. cellulose
c. phospholipids
d. lipopolysccharide
e. teichoic acid
4. A compound microscope with a 12x ocular and a 45x objective would have which of the following as its overall magnification?
a. 875x
b. 675x
c. 540x
d. 450x
e. 425x
5. Bacitracin is a drug which interferes with polysacharide biosythesis - Which of the following would most likely be affected by this drug?
a. ribosome function
b. peptidoglycan biosynthesis
c. flagella biosynthesis
d. fimbriae biosynthesis
e. DNA biosynthesis
6. Which structure below is associated with ALL cells?
a. nucleus
b. mitochordria
c. Golgi complex
d. plasma membrane
e. cell wall
7. Which structure is associated with dealing with the toxic effects of oxygen in eukaryotic cells?
a. mitochondria
b. lysosomes
c. chromosomes
d. peroxisomes
e. centrioles
8. Evidence suggests that blue-green algae began to put oxygen into the atmosphere about how many years ago?
a. 2.5 x 109 years
b. 3.5 x 109 years
c. 0.5 x 109 years
d. 4.6 x 109 years
e. 4.6 x 106 years
9. Which of the following organelles most closely resembles a procaryotic cell?
a. Nucleus
b. Mitochodria
c. Golgi complex
d. Vacuole
e. Cell wall
10. Which of the following pairs is mismatched with respect to a Gram stain?
a. Gram positive-purple staining cells
b. Iodine-mordant
c. Decolorizing agent-alcohol
d. Gram negative bacteria-pink staining
e. Crystal violet-counter stain
11. Which of the following is NOT a found in a eukaryotic cell?
a. peptidoglycan
b. plasma membrane
c. ribosomes
d. flagella
e. mitochondria
12. The individuals credited with formulating the cell theory in biology are which of the following?
a. Redi and Spalanzini
b. Schleiden and Schwann
c. Koch and Pasteur
d. van Leeuwenhoek and Hooke
e. Needham and von Helmut
13. Which of structure in cells is associated with cell adhesion?
a. peptidoglycan
b. outer membrane
c. pili
d. flagella
e. fimbriae
14. Which of the following is probably true about all the experiments that proved spontaneous generation?
a. Air was lacking
b. Too much heat was applied
c. The food source could not support life
d. Microorganisms were already present
e. All of these
15. Which of the following pairs is mismatched?
a. Hooke - first observation of cells
b. van Leeuwenhoek - germ theory of disease
c. Lister - spherical aberation
d. Pasteur - fermentation
e. Koch - investigation of anthrax
16. Which genus named below would most likely produce spores?
a. Clostridia
b. Streptococcus
c. Mycobacterium
d. Staphylococcus
e. Escherichia
17. The field diameter of a microscope is 4.56 mm. This value in micrometers is equal to which of the following?
a. 456
b. 45.6
c. 0.00456
d. 4560
e. 45600
18. Which of the following is NOT found in peptidoglycan?
a. NAM (N-acetylmuramic acid)
b. NAG (N-acetylglucosamine
c. D-amino acids
d. L-amino acids
e. teichoic acid
19. The approximate age of the universe is which of the following?
a. 13.0 x 109 years
b. 13.0 x 106 years
c. 3.5 x 109 years
d. 4.6 x 109 years
e. 4.6 x 106 years
20. Lysozyme is an enzyme found in egg whites and tears. It specifically degrades peptidoglycan. Lysozyme would inhibit bacterial growth by interfering with which of the following?
a. protein synthesis
b. cell wall synthesis
c. ribosome assembly
d. plasma membrane synthesis
e. lipopolysaccharide synthesis