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Class 6 Exam  >  Class 6 Tests  >  Test: Microorganisms -1 - Class 6 MCQ

Test: Microorganisms -1 - Class 6 MCQ


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10 Questions MCQ Test - Test: Microorganisms -1

Test: Microorganisms -1 for Class 6 2024 is part of Class 6 preparation. The Test: Microorganisms -1 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Microorganisms -1 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Microorganisms -1 below.
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Test: Microorganisms -1 - Question 1
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Which of the following accurately describes the composition of yogurt in terms of microorganisms?

Detailed Solution for Test: Microorganisms -1 - Question 1
Yogurt is known for its microbial composition, which includes not only bacteria but also other types of microbes. Typically, yogurt contains a variety of beneficial bacteria along with other microbial species that contribute to its taste, texture, and health benefits. This diverse microbial community is what gives yogurt its unique characteristics and nutritional value.
Test: Microorganisms -1 - Question 2
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Why are microorganisms like bacteria, viruses, fungi, and yogurt microbes classified as tiny living organisms?

Detailed Solution for Test: Microorganisms -1 - Question 2
Microorganisms are classified as tiny living organisms primarily because of their extremely small size, which renders them invisible to the naked eye. This minuscule size is a defining feature of microorganisms, making them distinct from larger organisms and requiring the use of specialized tools like microscopes for observation and study.
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Test: Microorganisms -1 - Question 3
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Why are microorganisms considered vital in ecosystems?

Detailed Solution for Test: Microorganisms -1 - Question 3
Microorganisms play crucial roles in ecosystems as they are involved in nutrient cycling and decomposition processes. These tiny organisms help break down organic matter, returning essential nutrients to the environment. Without them, the recycling of nutrients would be severely impacted, affecting the balance of ecosystems.
Test: Microorganisms -1 - Question 4
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How do fungi contribute to the human microbiome?
Detailed Solution for Test: Microorganisms -1 - Question 4
Fungi contribute to the human microbiome by forming symbiotic relationships with the host. In these mutually beneficial associations, fungi interact with the host organism, aiding in various physiological processes. This interaction can have positive impacts on the host's health and well-being, showcasing the intricate relationships between microorganisms and their host organisms.
Test: Microorganisms -1 - Question 5
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How do viruses replicate and spread?
Detailed Solution for Test: Microorganisms -1 - Question 5
Viruses are not cells themselves but rely on infecting living cells to replicate. When a virus infects a host cell, it takes over the cellular machinery to produce more viral particles. This process ultimately leads to the release of new viruses, which can then infect other cells. This unique method of replication is why viruses are often considered obligate intracellular parasites.
Test: Microorganisms -1 - Question 6
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Who was the first person to observe microorganisms, laying the foundation for microbiology?
Detailed Solution for Test: Microorganisms -1 - Question 6
Antonie van Leeuwenhoek was the first person to observe microorganisms in 1674 using a microscope of his own design. His discoveries revolutionized the understanding of the microbial world and paved the way for the field of microbiology.
Test: Microorganisms -1 - Question 7
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What is a key component of the scientific method ?
Detailed Solution for Test: Microorganisms -1 - Question 7

A key component of the scientific method is testing hypotheses through experiments. By formulating testable hypotheses and conducting experiments to gather evidence, scientists can either support or reject their hypotheses based on empirical data.

Test: Microorganisms -1 - Question 8
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In the context of scientific experiments, why is it important for a hypothesis to be testable?
Detailed Solution for Test: Microorganisms -1 - Question 8
It is crucial for a hypothesis to be testable because it allows scientists to design experiments that can provide data to either support or refute the hypothesis. Testable hypotheses are essential for the scientific method as they enable researchers to gather empirical evidence and draw meaningful conclusions based on the results of their experiments.
Test: Microorganisms -1 - Question 9
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What is the primary role of decomposers like bacteria and fungi in an ecosystem?
Detailed Solution for Test: Microorganisms -1 - Question 9
Decomposers such as bacteria and fungi play a crucial role in ecosystems by breaking down organic materials into smaller components. This process is essential for nutrient cycling and recycling, as it allows the release of nutrients back into the environment for use by other organisms. Without decomposers, dead organic matter would accumulate, and essential nutrients would not be returned to the ecosystem, disrupting the balance of the ecosystem.
Test: Microorganisms -1 - Question 10
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What happens to the energy as it moves through various levels of consumers in an ecosystem?
Detailed Solution for Test: Microorganisms -1 - Question 10
As energy moves through various levels of consumers in an ecosystem, it decreases with each level. This phenomenon is known as the 10% rule, where only about 10% of the energy from one trophic level is transferred to the next. The rest of the energy is lost as heat during metabolic processes. This decrease in energy explains why there are typically fewer top-level predators in an ecosystem compared to primary consumers.
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