BIOD 171 MICRO EXAMS MODULE 1 - 6 . COMPLETE WITH ANSWERS.EXAM MODULE 1
1. True or False: A virus is considered a microorganism. False. Viruses are not living and as such
are not considered microorganisms. Viruses can, however, be classified as microbes, a more
general term that includes microor...
biod 171 micro exams module 1 6 complete with answers
true or false a virus is considered a microorganism false viruses are not living and as such are not considered microo
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BIOD 171
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EXAM MODULE 1
1. True or False: A virus is considered a microorganism. False. Viruses are not living and as such
are not considered microorganisms. Viruses can, however, be classified as microbes, a more
general term that includes microorganisms and viruses.
2. What is the smallest biological unit of life? A cell.
3. At a generalized level, all cells are comprised of what? Macromolecules*
*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they
must answer with all four to be fully correct.
4. How many different types of amino acids are available from which to make proteins? 20
5. Define an essential amino acid. An essential amino acid cannot be produced by the human
body and as such must be take in from the environment through alternative sources (i.e)
food.
6. What are the two major types of nucleic acids and their roles? There are two major types of
nucleic acids: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are
chemical molecules that carry genetic information within the cell. DNA contains a vast
amount of hereditary information and is responsible for the inheritable characteristics of
living organisms. RNA is responsible for deciphering the hereditary information in DNA and
using it to synthesize proteins.
7. Complete the following DNA strand and indicate how many bonds are formed for each
complementary pair:
3’ GGTCATCG 5’
5’ CC AGC 3’
3’ GGTCATCG 5’
5’ CCAGTAGC 3’
There are 2 bonds formed between A and T, and 3 bonds between G and C.
8. The plasma membrane (select all that are true):
*A. Restricts movement of materials in and out of the cell
,B. Is often a triple layer comprised of lipids
*C. Prevents essential nutrients from escaping
D. Contains hydrophobic tails pointing outward.
9. How many carbon atoms are present in the monosaccharide glucose? 6 The molecular
formula of Glucose is C6H12O6
10. True of False: Eukaryotic cells do not have a nucleus. False. Eukaryotic cells do have a
nucleus (prokaryotic cells do not).
11. True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea. True
12. Describe the 4 basic bacterial morphologies. Coccus (round/spherical), bacillus (rod), vibrio
(curved rod) or spirillum (spiral/corkscrew).
13. True or False: Archaea, a eukaryotic class of microorganisms, are capable of surviving harsh
environments. False. Archaea are prokaryotic bacteria capable of surviving harsh
environments
14. Which of the following microorganisms are considered to be Eukarya? Select all that apply.
*A. Animalia
*B. Plantae
*C. Fungi
*D. Protista.
15. True of False: All multicellular microorganisms classified as Animalia are heterotrophic. True
16. Microorganisms classified as Plantae obtain most of their energy by converting _____ energy
into _______ energy. Light (sunlight); chemical (sugars)
17. A defining characteristic of fungi is the presence of chitin in the cell walls. Which of following also
contain chitin? Select all that apply.
*A. Mushrooms
B. Bacteria
*C. Yeast
*D. Molds. *all contain chitin.
, 18. True or False: A defining characteristic of Protista is the inability of colonies to form tissue layers.
True.
19. Cell walls are found in which of the following (select all that apply):
*A. Plants
*B. Fungi
*C. Bacteria
D. Mammalian cells
*E. Algae.
20. The function of the ribosome is (select all that apply):
*B. Protein synthesis. Ribosomes are located in the cytoplasm of prokaryotic cells and in the
ER of eukaryotic cells.
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