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Class 6 Exam  >  Class 6 Tests  >  IGCSE Cambridge Science for Year 6  >  Test: Microorganisms -2 - Class 6 MCQ

Test: Microorganisms -2 - Class 6 MCQ


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10 Questions MCQ Test IGCSE Cambridge Science for Year 6 - Test: Microorganisms -2

Test: Microorganisms -2 for Class 6 2024 is part of IGCSE Cambridge Science for Year 6 preparation. The Test: Microorganisms -2 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Microorganisms -2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Microorganisms -2 below.
Solutions of Test: Microorganisms -2 questions in English are available as part of our IGCSE Cambridge Science for Year 6 for Class 6 & Test: Microorganisms -2 solutions in Hindi for IGCSE Cambridge Science for Year 6 course. Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free. Attempt Test: Microorganisms -2 | 10 questions in 15 minutes | Mock test for Class 6 preparation | Free important questions MCQ to study IGCSE Cambridge Science for Year 6 for Class 6 Exam | Download free PDF with solutions
Test: Microorganisms -2 - Question 1
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How would you categorize microorganisms like bacteria, viruses, fungi, and yogurt microbes based on their visibility?

Detailed Solution for Test: Microorganisms -2 - Question 1
Microorganisms such as bacteria, viruses, fungi, and the microbes found in yogurt are typically too small to be seen without the aid of a microscope. This characteristic of being invisible to the naked eye is what distinguishes them as microscopic organisms, highlighting the importance of microscopic observation in studying and understanding these tiny life forms.
Test: Microorganisms -2 - Question 2
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What process is essential in the creation of yogurt?

Detailed Solution for Test: Microorganisms -2 - Question 2
The creation of yogurt involves the fermentation of milk by bacteria, particularly lactic acid bacteria. This fermentation process is crucial as it helps prolong the milk's shelf life by preventing spoilage. Moreover, the bacteria responsible for yogurt's creation can be magnified up to 21,000 times under an electron microscope, showcasing the tiny microorganisms at work.
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Test: Microorganisms -2 - Question 3
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What is the characteristic feature of microorganisms?

Detailed Solution for Test: Microorganisms -2 - Question 3
One characteristic feature of microorganisms is that they are unicellular, meaning they consist of a single cell. Unlike multicellular organisms, microorganisms do not possess a true nucleus. This unique cellular structure allows them to carry out essential life processes and thrive in diverse environments.
Test: Microorganisms -2 - Question 4
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What is a defining characteristic of fungi that distinguishes them from plants?
Detailed Solution for Test: Microorganisms -2 - Question 4
Fungi are distinct from plants because they do not photosynthesize like plants. Instead, they absorb nutrients from organic materials. This process involves breaking down and absorbing nutrients from their surroundings. This unique mode of nutrition allows fungi to thrive in a variety of environments, playing essential roles in decomposition and nutrient cycling in ecosystems.
Test: Microorganisms -2 - Question 5
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What is a key characteristic of bacteria?
Detailed Solution for Test: Microorganisms -2 - Question 5
Bacteria are unicellular organisms that have a relatively simple cellular structure. Despite their simplicity, bacteria are incredibly diverse and ubiquitous, being found in almost every environment on Earth. One remarkable characteristic of bacteria is their ability to reproduce rapidly, allowing them to adapt quickly to changing environmental conditions.
Test: Microorganisms -2 - Question 6
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What is the function of yeast in fermentation processes?
Detailed Solution for Test: Microorganisms -2 - Question 6
Yeast, a type of unicellular fungus, plays a crucial role in fermentation processes by converting sugars into alcohol and carbon dioxide through a metabolic process known as fermentation. This ability of yeast to convert sugars into these products is widely utilized in various applications, including baking, brewing, and winemaking.
Test: Microorganisms -2 - Question 7
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What was the primary hypothesis put forth by Louis Pasteur regarding the spoilage of food in his experiments?
Detailed Solution for Test: Microorganisms -2 - Question 7
Louis Pasteur hypothesized that airborne microorganisms were responsible for the spoilage of food. His experiments with boiled soup exposed to air versus isolated soup supported this hypothesis, demonstrating the role of microorganisms in food spoilage.
Test: Microorganisms -2 - 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 -2 - 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 -2 - Question 9
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In a food chain, what is the primary source of energy for all organisms?
Detailed Solution for Test: Microorganisms -2 - Question 9
The primary source of energy for all organisms in a food chain is sunlight. Producers, such as plants, utilize sunlight during photosynthesis to convert it into chemical energy. This energy is then transferred through the food chain as organisms consume each other. Without sunlight, producers would not be able to create energy through photosynthesis, and the entire food chain would collapse.
Test: Microorganisms -2 - Question 10
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How do food webs differ from food chains in an ecosystem?
Detailed Solution for Test: Microorganisms -2 - Question 10
Food webs differ from food chains in that they represent a more complex network of interconnected food chains within an ecosystem. While a food chain follows a linear pathway of energy flow from one organism to another, a food web illustrates how multiple food chains are linked and interconnected, showing the relationships between various species in an ecosystem. This interconnectedness highlights the complexity and interdependence of different organisms within an ecological community.
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