Portage Learning BIOD 171 Microbiology Module 1 UPDATED ACTUAL Exam Questions and CORRECT Answers

Portage Learning BIOD 171 Microbiology Module 1
UPDATED ACTUAL Exam Questions and CORRECT Answers

Question 1.
True or False: The smallest biological unit of life is the molecule.

Correct Answer: False


Question 2.
At a generalized level, all cells are comprised of what?

Correct Answer: Macromolecules
A student may also answer: Proteins, Lipids, Nucleic acids and
Polysaccharides but they must answer with all four to be fully correct.


Question 3.
Proteins are formed from various combinations of _______ of which there are ______
known forms.

Correct Answer: 1. Amino acids
2. 20


Question 4.
How many amino acids are classified as being essential amino acids?

Correct Answer: 9


Question 5.
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

Correct Answer: A;C


Question 6.
Complete the following DNA strand, and indicate how many bonds are formed for each
complementary pair:
3' GGTCATCG 5' 5' CC _____AGC 3'

Correct Answer: 3' GGTCATCG 5'
5' CCAGTAGC 3'
There are 2 bonds formed between A and T, and 3 bonds between G and C.

,Question 7.
True of False: The genetic material within a prokaryotic cell is contained within a
membrane-enclosed region.

Correct Answer: False


Question 8.
How many carbon atoms are present in the monosaccharide glucose?

Correct Answer: 6


Question 9.
Describe the 4 basic bacterial morphologies.

Correct Answer: Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or
spirillum (spiral/corkscrew).


Question 10.
True or False: Archaea, a eukaryotic class of microorganisms, is capable of surviving
harsh environments.

Correct Answer: False


Question 11.
Which of the following microorganisms are considered to be Eukarya? Select all that
apply.
Animalia
Plantae
Fungi
Protista

Correct Answer: All of them


Question 12.
Microorganisms classified as _________ obtain most of their energy by converting light
energy into chemical energy.

Correct Answer: Plantae
• 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 -✓✓A, C, D

,Question 13.
True or False: Protista retain a unicellular classification, as they are unable to form
tissue layers.

Correct Answer: True


Question 14.
True of False. All multicellular microorganisms classified as Animalia are heterotrophic

Correct Answer: True


Question 15.
The function of the lysosome is (select all that apply):
A. Lipid synthesis
B. Protein synthesis
C. To produce energy (ATP)
D. Protein modification and distribution
E. Waste disposal via hydrolytic enzymes

Correct Answer: E


Question 16.
The function of the mitochondria is (select all that apply):
A. Lipid synthesis
B. Protein synthesis
C. To produce energy (ATP)
D. Protein modification and distribution
E. Waste disposal via hydrolytic enzymes

Correct Answer: C
• The combination of the cell membrane and the outer membrane is referred
to as the (select all that apply):
A. Cell wall
B. Capsid
C. Cell envelope
D. Outer leaflet -✓✓C


Question 17.
What is the smallest biological unit of life?

Correct Answer: Cell


Question 18.
Define an essential amino acid.

, Correct Answer: 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.


Question 19.
Where can the two major types of nucleic acids be found in the cell and what are their
roles?

Correct Answer: While both DNA and RNA can be found in the nucleus (center
of the cell), only RNA is capable of leaving the nucleus. 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.


Question 20.
True or False: Archaea is noted for its ability to survive under harsh conditions.

Correct Answer: True


Question 21.
Microorganisms classified as Plantae obtain most of their energy by converting _____
energy into _______ energy.

Correct Answer: Light (sunlight); chemical (sugars)
• True or False: A defining characteristic of Protista is the inability of colonies
to form tissue layers. -✓✓True


Question 22.
Cell walls are found in which of the following (select all that apply):
A. Plants
B. Fungi
C. Bacteria
D. Mammalian cells
E. Algae

Correct Answer: A, B, C, E


Question 23.
The function of the ribosome is (select all that apply):
A. Lipid synthesis
B. Protein synthesis
C. To produce energy (ATP)
D. Protein modification and distribution
E. Waste disposal via hydrolytic enzymes

Correct Answer: B