Classification Of Microorganisms

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| By Limteongyam

Limteongyam

Community Contributor

Quizzes Created: 1 | Total Attempts: 1,231

Questions: 10 | Attempts: 1,231 | Updated: Mar 22, 2023

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Questions: True or False.

Questions and Answers

1.

Microorganisms are tiny organisms which can be seen with the naked eyes.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Microorganisms are not visible to the naked eye as they are extremely small in size. They can only be seen under a microscope. Therefore, the statement that microorganisms can be seen with the naked eye is false.

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2
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2.

Microorganisms are found almost everywhere.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Microorganisms, including bacteria, viruses, fungi, and protists, are indeed found almost everywhere. They can be found in soil, water, air, on surfaces, and even inside the human body. These microorganisms play crucial roles in various ecosystems, such as nutrient cycling, decomposition, and symbiotic relationships. They can also cause diseases in humans, animals, and plants. Therefore, it is true that microorganisms are widely distributed and can be found in nearly every environment on Earth.

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1
1
3.

Some bacteria synthesise food through chemosynthesis using chemical energy from oxidising chemicals such as nitrite.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Some bacteria are capable of synthesizing food through chemosynthesis, a process that involves using chemical energy from oxidizing chemicals like nitrite. This allows them to convert inorganic compounds into organic compounds, serving as a source of energy for their survival. Therefore, the statement is true.

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4.

Parasitic obtain food from living organisms.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Parasites are organisms that rely on a host organism to obtain food and survive. They live off the nutrients and energy provided by the host, often causing harm or disease in the process. Therefore, it is true that parasites obtain food from living organisms.

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5.

Dark and damp places include decaying matter and bodies of living organisms.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Dark and damp places are conducive environments for the growth and accumulation of decaying matter and bodies of living organisms. The lack of light and moisture in these places creates conditions that promote the decomposition and decay of organic material, providing a suitable habitat for various organisms. This makes the statement "Dark and damp places include decaying matter and bodies of living organisms" true.

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6.

Some fungi are multicelluter microorganisms such as yeast.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Fungi are not multicellular microorganisms, but rather they can be either multicellular or unicellular. Yeast, which is a type of fungi, is unicellular. Therefore, the statement "Some fungi are multicellular microorganisms such as yeast" is false.

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7.

Saprophytic feed on living organisms, for example Plasmodium feeds on cells in the human body.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement is false because saprophytic organisms do not feed on living organisms. They obtain their nutrition by decomposing dead organic matter. Plasmodium, on the other hand, is a parasitic organism that feeds on cells in the human body, not a saprophyte.

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8.

Viruses do not have cytoplasm, plasma membrane or nucleus.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Viruses are considered to be acellular entities because they lack the basic components of a cell, such as cytoplasm, plasma membrane, and nucleus. Unlike cells, viruses cannot carry out metabolic processes or reproduce on their own. Instead, they rely on infecting host cells and hijacking their cellular machinery to replicate. Therefore, the statement that viruses do not have cytoplasm, plasma membrane, or nucleus is true.

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9.

The viral DNA replicates using material in the host cell.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given statement is true because viral DNA relies on the resources and machinery present in the host cell to replicate. Once the virus enters a host cell, it takes control of the cell's machinery and uses it to produce new copies of its DNA. This process allows the virus to multiply and spread throughout the host's body. Without the host cell's materials and mechanisms, the viral DNA would not be able to replicate and the virus would not be able to survive and propagate.

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10.

Algae have chloroplast, nucleus, cytoplasm and cilia.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Algae are photosynthetic organisms that contain chloroplasts, which allow them to convert sunlight into energy. They also have a nucleus, which contains their genetic material, and cytoplasm, which is the fluid-filled region inside the cell. However, algae do not have cilia, which are hair-like structures used for movement. Therefore, the statement that algae have cilia is false.

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Current Version
Mar 22, 2023

Quiz Edited by
ProProfs Editorial Team
Aug 20, 2010

Quiz Created by
Limteongyam

Classification Of Microorganisms

Microorganisms are tiny organisms which can be seen with the naked eyes.

Microorganisms are found almost everywhere.

Some bacteria synthesise food through chemosynthesis using chemical energy from oxidising chemicals such as nitrite.

Parasitic obtain food from living organisms.

Dark and damp places include decaying matter and bodies of living organisms.

Some fungi are multicelluter microorganisms such as yeast.

Saprophytic feed on living organisms, for example Plasmodium feeds on cells in the human body.

Viruses do not have cytoplasm, plasma membrane or nucleus.

The viral DNA replicates using material in the host cell.

Algae have chloroplast, nucleus, cytoplasm and cilia.