BIOD 171 Microbiology Module 1 – 6 Exam Questions and Answers

Portage Learning BIOD 171 Module 1- 6 Full Exams c f c f c f c f c f c f c f c f




Exam c f Module c f 1



1. True or False: A virus is considered a microorganism.cf cf cf c f cf cf c f c f




False. Viruses are not living and as such are not considered microorganisms. Viruses
cf cf cf cf cf cf cf cf cf cf cf cf




can, however, be classified as microbes, a more general term that
c f c f c f c f c f c f c f c f c f c f c f




includes microorganisms and viruses.
c f cf c f c f




2. What is the smallest biological unit of cf cf cf cf cf cf




cf life? A cell. c f c f




3. At a generalized level, all cells are
c f c f c f c f c f c f




c f comprised of what? c f cf c f Macromolecules*

*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides
cf cf c f c f cf cf cf cf cf cf




but they must answer with all four to be fully correct.
cf c f c f c f c f c f c f c f c f c f c f




4. How many different types of amino acids are available from
c f c f c f c f c f c f cf c f c f




which to make proteins?
c f c f cf c f




20



5. Define an essential amino acid. cf cf cf cf




An essential amino acid cannot be produced by the human body
c f c f c f c f c f c f c f c f c f c f




c f and as such must be taken in from the environment through
c f c f cf c f c f c f c f c f c f c f




c f alternative sources (i.e) food. c f c f c f




6. What c f are c f the c f two c f major c f types c f of c f nucleic c f acids c f and c f their c f roles?

DNA (deoxyribonucleic acid): Contains the genetic material as well as
c f c f c f c f c f c f c f c f c f




c heredity characteristics found in living organisms. RNA (ribonucleic acid): its
f cf cf cf cf cf cf cf cf cf




role is for decoding
c f the sequence
c f of heredity information
c f c f c f c f c f c f c f c f c f c f c f c f




c ffound in DNA
c f c f c f cf

, 7. What c f are c f the c f two c f major c f types c f of c f nucleic c f acids c f and c f their c f roles?

There are two major types of nucleic acids: DNA
c f c f c f c f c f c f c f c f




c (deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are
f c f c f cf c f c f c f c f c f




chemical molecules that carry genetic information within the cell. DNA
c f c f c f c f c f cf c f c f c f




c contains a vast amount of hereditary information and is
f c f c f c f c f c f cf c f c f




responsible for the inheritable characteristics of living organisms.
c f c f c f c f c f c f c f c f




c RNA is responsible for deciphering the hereditary information in
f c f c f c f c f c f c f c f c f




DNA and using it to synthesize proteins.
cf c f c f c f c f c f c f




8. Complete the following RNA strand and indicate how many c f c f c f c f c f c f c f c f




bonds are formed for each complementary pair:
c f c f cf c f c f c f c f




3’ GGUCAUCG 5’

5’ CC AGC c f c f 3’



3’ GGUCAUCG 5’

5’ CCAGUAGC 3’

There are 2 bonds formed between A and U, and 3 bonds between G and C.
c f c f c f c f c f c f c f c f c f c f c f c f c f c f c f




9. The plasma c f c f membrane c f (select all that are c f c f c f c f true):

A. Only c f restricts c f movement c f of c f materials c f into c f the c f cell

B. Is often a bilayer comprised of lipids
cf cf cf cf cf cf




C. Cannot c f prevent c f essential c f nutrients c f from c f escaping

D. Contains hydrophobic tails pointing cf cf cf




cf inward B and D c f c f c f




10. Carbon, Hydrogen and Oxygen atoms come together to form c f c f c f c f c f c f c f c f




what primary macromolecule? Give an example.
c f cf c f c f c f c f




Polysaccharides. Glucose, sucrose and cellulose are all acceptable answers. cf cf cf cf cf cf cf cf




11. True c f or c f False: c f Eukaryotic c f cells c f do c f not c f have c f a c f nucleus

False. Eukaryotic cells do have a nucleus (prokaryotic cells do not).
cf cf cf cf cf cf cf cf cf cf

, 12. True or False: Prokaryotic cells can be subdivided into
c f c f c f c f c f c f c f c f




c f Bacteria and Archaea. c f cf True



13. Describe the 4 basic bacterial morphologies. c f c f c f c f c f




Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum
c f c f c f c f c f c f c f c f




(spiral/corkscrew).
cf




14. True or False: Archaea, a eukaryotic class of microorganisms, are capable
cf cf cf cf cf cf cf cf cf cf




of surviving harsh environments.
cf c f c f c f




False. Archaea are prokaryotic bacteria capable of surviving harsh environments.
cf cf cf cf cf cf cf cf cf




15. Which of the following microorganisms are considered to be
c f c f c f c f c f c f c f c f




Eukarya? Select all that apply.
c f c f cf c f




A. Animalia

B. Plantae

C. Fungi

D. Protista



A,B,C,D



16. True of False: All multicellular c f c f c f c f c f microorganisms classified c f c f as
Animalia are heterotropic.
c f cf c f




True



17. Microorganisms classified as Plantae obtain c f c f c f c f c f most c f of c f their c f energy c f by
cconverting
f




………….. energy into ................................. energy.
Light c f (sunlight); c f chemical c f (sugars)

, 18. A cf defining characteristic of fungi is the presence of chitin
c f c f c f c f c f c f c f c f c f




c fin the cell walls. Which of following also contain chitin?
c f c f cf c f c f c f c f c f c f c f c f c f c f c f




c f Select all that apply. c f c f c f c f c f c f




A. Mushrooms

B. Bacteria

C. Yeast

D. Molds



A, C and D all contain chitin.
c f c f c f c f c f c f




19. True or False: A defining characteristic of Protista is the inability of
c f c f c f c f c f c f c f c f c f c f c f




colonies to form tissue layers.
c f c f cf c f




True.



20. Cell walls are found in which of the following (select all that apply):
c f cf c f c f c f c f c f c f c f c f c f c f




A. Plants

B. Fungi

C. Bacteria

D. Mammalian cells c f




E. Algae



A, B, C, E
c f c f c f




21. The c f function of c f c f the c f ribosome c f is (select
c f c f all that
c f c f apply):

A. Lipid c f synthesis

B. Protein c f synthesis
C. To produce energy (ATP) cf cf cf