BIOD 171 ALL EXAMS/ MODULE 1-6(GRADED A+) Questions and Answers- Portage Learning

Portage b 9 Learning BIOD b 9 b 9 171 b 9 Module b 9 1- 6 b 9 b 9 Full b 9 Exams
Exam b 9 Module b 9 1



1. True or False: A virus is considered a microorganism.
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False. Viruses are not living and as such are not considered microorganisms.
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Viruses can, however, be classified as microbes, a more general
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term that includes microorganisms and viruses.
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2. What is the smallest biological unit b9 b9 b9 b9 b9




b9of life? A cell.
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3. At a generalized level, all cells are
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b 9 comprised of what? b 9 b9 b 9 Macromolecules*

*A student may also answer: Proteins, Lipids, Nucleic acids and
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Polysaccharides but they must answer with all four to be fully
b9 b9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9


correct.
b 9




4. How many different types of amino acids are available from
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which to make proteins?
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20



5. Define an essential amino acid. b9 b9 b9 b9




An bessential amino acid cannot be produced by the human
9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



b 9 body and as such must be taken
b 9 in from the environment
b 9 b 9 b9 b 9 b 9 b 9 b 9 b 9 b 9


b 9 through alternative sources (i.e) food.
b 9 b 9 b 9 b 9




6. What b 9 are b 9 the b 9 two b 9 major b 9 types b 9 of b 9 nucleic b 9 acids b 9 and b 9 their b 9 roles?

DNA (deoxyribonucleic acid): Contains the genetic material as well
b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



as heredity characteristics found in living organisms. RNA (ribonucleic
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acid): its role is for decoding
b9 b9 the sequence
b 9 of heredity b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



b 9 information
b 9 found in DNA b 9 b 9 b 9 b 9 b9

, 7. What b 9 are b 9 the b 9 two b 9 major b 9 types b 9 of b 9 nucleic b 9 acids b 9 and b 9 their b 9 roles?

There are two bmajor
9 types of nucleic
b 9 acids: DNA b 9 b 9 b 9 b 9 b 9 b 9



b (deoxyribonucleic
9 acid) and RNA (ribonucleic acid). Nucleic acids are b 9 b 9 b9 b 9 b 9 b 9 b 9 b 9



chemical molecules that carry genetic information within
b 9 b 9 the cell. b 9 b 9 b 9 b9 b 9 b 9



b DNA contains
9 a vastb 9 amount of hereditary information and b 9 b 9 b 9 b 9 b 9 b9 b 9



b 9is responsible for the inheritable characteristics of living
b 9 b 9 b 9 b 9 b 9 b 9 b 9



b 9organisms. RNA is responsible for deciphering the hereditary
b 9 b 9 b 9 b 9 b 9 b 9 b 9



b information in DNA and using it to synthesize proteins.
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8. Complete the following RNA strand and indicate how many
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bonds are formed for each complementary pair:
b 9 b 9 b9 b 9 b 9 b 9 b 9




3’ GGUCAUCG 5’

5’ b 9 CC AGC b 9 3’



3’ GGUCAUCG 5’

5’ CCAGUAGC 3’

There are 2 bonds formed between A and U, and 3 bonds between G and C.
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9. The b 9 plasma b 9 membrane b 9 (select b 9 all b 9 that b 9 are b 9 true):

A. Only b 9 restricts b 9 movement b 9 of b 9 materials b 9 into b 9 the b 9 cell

B. Is often a bilayer comprised of lipids
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C. Cannot b 9 prevent b 9 essential b 9 nutrients b 9 from b 9 escaping

D. Contains hydrophobic tails b9 b9




b9 pointing inward B and D b9 b 9 b 9 b 9




10. Carbon, Hydrogen and Oxygen atoms come together to
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form what primary macromolecule? Give an example.
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Polysaccharides. Glucose, sucrose and cellulose are all acceptable answers.
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11. True b 9 or b 9 False: b 9 Eukaryotic b 9 cells b 9 do b 9 not b 9 have b 9 a b 9 nucleus

False. Eukaryotic cells do have a nucleus (prokaryotic cells do not).
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, 12. True or False: Prokaryotic cells can be subdivided into
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b 9 Bacteria and Archaea. True b 9 b9




13. Describe b 9 the b 9 4 b 9 basic b 9 bacterial b 9 morphologies.

Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum
b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



(spiral/corkscrew).
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14. True or False: Archaea, a eukaryotic class of microorganisms, are
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capable of surviving harsh environments.
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False. Archaea are prokaryotic bacteria capable of surviving harsh environments.
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15. Which of the following microorganisms are considered to be
b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



Eukarya? Select all that apply.
b 9 b 9 b9 b 9




A. Animalia

B. Plantae

C. Fungi

D. Protista



A,B,C,D



16. True of False: All multicellular
b 9 b 9 b 9 b 9 b 9 microorganisms classified b 9



as Animalia are heterotropic.
b 9 b 9 b9 b 9




True



17. Microorganisms classified as Plantae obtain b 9 b 9 b 9 b 9 b 9 most b 9 of b 9 their b 9 energy b 9 by
b 9converting
………….. energy into ................................. energy.
Light b 9 (sunlight); b 9 chemical b 9 (sugars)

, 18. A b9 b 9defining characteristic of fungi is b 9 b 9 b 9 b 9 b 9 the presence
b 9 b 9 of
b 9 chitin in the cell walls. Which of
b 9 b 9 b 9 b9 b 9 b 9 b9 b 9 following also b 9 b9 b9 contain
b9



b9 b9chitin? Select all that apply.
b9 b 9 b 9 b 9 b 9 b 9 b9 b9




A. Mushrooms

B. Bacteria

C. Yeast

D. Molds



A, C and D all contain chitin.
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19. True or False: A defining characteristic of Protista is the inability
b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9 b 9



b 9of colonies to form
b 9 tissue layers. b 9 b9 b 9




True.



20. Cell walls are found in which of the following (select all that apply):
b9 b9 b9 b9 b9 b9 b9 b9 b9 b9 b9 b9




A. Plants

B. Fungi

C. Bacteria

D. Mammalian cells b 9




E. Algae



A, b 9 B, b 9 C, b 9 E



21. The b 9 function b 9 of b 9 the b 9 ribosome b 9 is b 9 (select b 9 all b 9 that b 9 apply):

A. Lipid b 9 synthesis

B. Protein b 9 synthesis
C. To produce energy (ATP)
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