biology : class12 Bacterial Sources : Definition, Sources, Nutritional Importance : Single Cell Protein MCQ Questions and Answers
Practice important
Bacterial Sources
MCQ questions and answers.
Page 1
of
1
|
10
MCQ Questions
1. Which bacterium is commonly used as a source of single-cell protein?
A.
Methylophilus methylotrophus
B.
Rhizopus stolonifer
C.
Saccharomyces cerevisiae
D.
Chlorella vulgaris
Correct Answer:
Methylophilus methylotrophus
Explanation:
Methylophilus methylotrophus is a bacterium known for producing single-cell protein, especially by using methanol as a carbon source.
2. Single-cell protein can be produced from the bacterial biomass of which type of organism?
A.
Bacteria
B.
Mosses
C.
Ferns
D.
Flowering plants
Correct Answer:
Bacteria
Explanation:
Bacterial cells can be grown in large quantities and harvested as biomass for use as single-cell protein.
3. Which bacterial genus includes species used in single-cell protein production?
A.
Methylophilus
B.
Penicillium
C.
Aspergillus
D.
Chlorella
Correct Answer:
Methylophilus
Explanation:
Methylophilus includes bacteria such as Methylophilus methylotrophus, which are used as sources of single-cell protein.
4. Methylophilus methylotrophus is especially useful for producing single-cell protein because it can grow on which substrate?
A.
Methanol
B.
Starch grains
C.
Cellulose fibres
D.
Chlorophyll
Correct Answer:
Methanol
Explanation:
Methylophilus methylotrophus is a methylotrophic bacterium that can use methanol as a carbon and energy source for growth.
5. What is harvested from bacteria when they are used as a source of single-cell protein?
A.
Bacterial biomass
B.
Flower petals
C.
Plant roots
D.
Fungal spores
Correct Answer:
Bacterial biomass
Explanation:
The cells produced during bacterial growth are collected as bacterial biomass and used as single-cell protein.
6. Which characteristic makes bacteria suitable for use as sources of single-cell protein?
A.
Rapid growth
B.
Formation of large seeds
C.
Long generation time
D.
Dependence on sunlight in every case
Correct Answer:
Rapid growth
Explanation:
Many bacteria multiply rapidly, allowing a large amount of microbial biomass to be produced in a short time.
7. Which of the following is a bacterial source of single-cell protein?
A.
Methylophilus methylotrophus
B.
Candida utilis
C.
Chlorella
D.
Fusarium
Correct Answer:
Methylophilus methylotrophus
Explanation:
Methylophilus methylotrophus is a bacterium used for single-cell protein production, whereas the other options are yeast, alga, and fungus.
8. Bacterial single-cell protein is obtained mainly from which part of the microorganism?
A.
The bacterial cells
B.
The bacterial flagella only
C.
The bacterial pigments only
D.
The bacterial waste products only
Correct Answer:
The bacterial cells
Explanation:
The complete bacterial cell biomass is processed as single-cell protein; it is not obtained only from flagella, pigments, or waste products.
9. Which bacterial group is associated with the production of single-cell protein from simple carbon compounds such as methanol?
A.
Methylotrophic bacteria
B.
Nitrogen-fixing plants
C.
Filamentous fungi
D.
Green algae
Correct Answer:
Methylotrophic bacteria
Explanation:
Methylotrophic bacteria can use one-carbon compounds such as methanol for growth and may be cultivated to produce single-cell protein.
10. Why can bacterial cultures be useful for producing single-cell protein on a large scale?
A.
They produce biomass quickly in controlled cultures
B.
They require many years to mature
C.
They produce protein only in seeds
D.
They grow only as large visible plants
Correct Answer:
They produce biomass quickly in controlled cultures
Explanation:
Bacteria generally multiply rapidly and can be cultivated in controlled fermenters, making them useful sources of single-cell protein.
Short Questions and Answers
Practice short questions and answers related to
Bacterial Sources
.
Short questions are currently unavailable for this page.