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Portage Learning BIOD 171 Microbiology Exam AND Answers
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A virus is classified as a microbe.True. Although viruses are not living and as such are not considered microorganisms, they can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 2. True or False: The smallest biological unit of life is the molecu...

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  • February 25, 2024
  • 41
  • 2023/2024
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Portage Learning BIOD 171 Microbiology Exam Answers
With 100% Verified Correct Answers Latest Updated
2024.Guaranteed Success for Grade A+
.


1. A virus is classified as a microbe.True. Although viruses are not living and
as such are not considered microorganisms, they can, however, be classified as
microbes, a more general term that includes microorganisms and viruses.

2. True or False: The smallest biological unit of life is the molecule.False. The
smallest biological unit of life is the cell.

3. What are the 4 main types of macromolecules found in cells?Proteins,
Lipids, Nucleic acids and Polysaccharide

1. Proteins are formed from various combinations of __________ of which there
are ____ known forms.Amino acids, 20

2. How many amino acids are classified as being essential amino acids?9

1. 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.




[Date] 1

,Portage Learning BIOD 171 Microbiology Exam Answers
With 100% Verified Correct Answers Latest Updated
2024.Guaranteed Success for Grade A+
1. Complete the following RNA strand and indicate how many bonds are formed
for each complementary pair:

3’ GGUCAUCG 5’

5’ CC AGC 3’

3’ GGUCAUCG 5’

5’ CCAGUAGC 3’

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

1. The plasma membrane (select all that are true):BD

A. Only restricts movement of materials into the cell

B. Is often a bilayer comprised of lipids

C. Cannot prevent essential nutrients from escaping

D. Contains hydrophobic tails pointing inward

2. Carbon, Hydrogen and Oxygen atoms come together to form what primary
macromolecule? Give an example.Polysaccharides. Glucose, sucrose and
cellulose are all acceptable answers.

True of False: The genetic material within a prokaryotic cell is contained within a
membraneenclosed region.False. Only eukaryotic cells contain its genetic
material within a nucleus


[Date] 2

,Portage Learning BIOD 171 Microbiology Exam Answers
With 100% Verified Correct Answers Latest Updated
2024.Guaranteed Success for Grade A+
True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.True

Describe the 4 basic bacterial morphologies.Coccus (round/spherical), bacillus
(rod), vibrio (curved rod) or spirillum (spiral/corkscrew).

True or False: Archaea is noted for its ability to survive under harsh
conditions.True. Archaea can often be found in harsh conditions such as high
salt levels, high acid conditions, high temperatures and even oxygen-poor
conditions.

1. Animalia, Plantae, Fungi and Protista are all classification under what type of
organism?B

A. Bacteria

B. Eukarya

C. Archaea

D. Virus

2. All multicellular microorganisms classified as Animalia are
autotropic.False—they are heterotropic.

3. Microorganisms classified as _________ obtain most of their energy by
converting light energy into chemical energy.Plantae

1. A defining characteristic of fungi is the presence of chitin in the cell walls.
Which of following also contain chitin? Select all that apply.ACD



[Date] 3

, Portage Learning BIOD 171 Microbiology Exam Answers
With 100% Verified Correct Answers Latest Updated
2024.Guaranteed Success for Grade A+
A. Mushrooms

B. Bacteria

C. Yeast

D. Molds

2. True or False: A defining characteristic of Protista is the inability of colonies to
form tissue layers.True.

1. Cell walls are found in which of the following (select all that apply):A, B, C, E

A. Plants

B. Fungi

C. Bacteria

D. Mammalian cells

E. Algae

2. The function of the ribosome is (select all that apply):B

A. Lipid synthesis

B. Protein synthesis

C. To produce energy (ATP)




[Date] 4

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