Biod 171 module 1 exam, BIOD 171 MODULE 3 EXAM, BIOD 171:
MODULE 4 2025. | Exam Revision Questions And Correct Answers | Graded
A+ | 2025 Update |
True/False. A virus is considered a microorganism. - ANSWER- False
True or False: The smallest biological unit of life is the molecule. - ANSWER- False
At a generalized level, all cells are comprised of what? - ANSWER- Macromolecules
A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they must
answer with all four to be fully correct.
Proteins are formed from various combinations of _______ of which there are ______ known
forms. - ANSWER- 1. Amino acids
2. 20
How many amino acids are classified as being essential amino acids? - ANSWER- 9
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 - ANSWER- A;C
Complete the following DNA strand, and indicate how many bonds are formed for each
complementary pair:
3' GGTCATCG 5'
,5' CC _____AGC 3' - ANSWER- 3' GGTCATCG 5'
5' CCAGTAGC 3'
There are 2 bonds formed between A and T, and 3 bonds between G and C.
True of False: The genetic material within a prokaryotic cell is contained within a membrane-
enclosed region. - ANSWER- False
How many carbon atoms are present in the monosaccharide glucose? - ANSWER- 6
Describe the 4 basic bacterial morphologies. - ANSWER- Coccus (round/spherical), bacillus
(rod), vibrio (curved rod) or spirillum (spiral/corkscrew).
True or False: Archaea, a eukaryotic class of microorganisms, is capable of surviving harsh
environments. - ANSWER- False
Which of the following microorganisms are considered to be Eukarya? Select all that apply.
Animalia
Plantae
Fungi
Protista - ANSWER- All of them
Microorganisms classified as _________ obtain most of their energy by converting light energy
into chemical energy. - 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 - ANSWER- A, C, D
True or False: Protista retain a unicellular classification, as they are unable to form tissue layers. -
ANSWER- True
True of False. All multicellular microorganisms classified as Animalia are heterotrophic -
ANSWER- True
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 - ANSWER- E
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 - 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
MODULE 4 2025. | Exam Revision Questions And Correct Answers | Graded
A+ | 2025 Update |
True/False. A virus is considered a microorganism. - ANSWER- False
True or False: The smallest biological unit of life is the molecule. - ANSWER- False
At a generalized level, all cells are comprised of what? - ANSWER- Macromolecules
A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they must
answer with all four to be fully correct.
Proteins are formed from various combinations of _______ of which there are ______ known
forms. - ANSWER- 1. Amino acids
2. 20
How many amino acids are classified as being essential amino acids? - ANSWER- 9
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 - ANSWER- A;C
Complete the following DNA strand, and indicate how many bonds are formed for each
complementary pair:
3' GGTCATCG 5'
,5' CC _____AGC 3' - ANSWER- 3' GGTCATCG 5'
5' CCAGTAGC 3'
There are 2 bonds formed between A and T, and 3 bonds between G and C.
True of False: The genetic material within a prokaryotic cell is contained within a membrane-
enclosed region. - ANSWER- False
How many carbon atoms are present in the monosaccharide glucose? - ANSWER- 6
Describe the 4 basic bacterial morphologies. - ANSWER- Coccus (round/spherical), bacillus
(rod), vibrio (curved rod) or spirillum (spiral/corkscrew).
True or False: Archaea, a eukaryotic class of microorganisms, is capable of surviving harsh
environments. - ANSWER- False
Which of the following microorganisms are considered to be Eukarya? Select all that apply.
Animalia
Plantae
Fungi
Protista - ANSWER- All of them
Microorganisms classified as _________ obtain most of their energy by converting light energy
into chemical energy. - 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 - ANSWER- A, C, D
True or False: Protista retain a unicellular classification, as they are unable to form tissue layers. -
ANSWER- True
True of False. All multicellular microorganisms classified as Animalia are heterotrophic -
ANSWER- True
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 - ANSWER- E
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 - 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
