Microorganisms
Trending Questions
Q.
Can humans live without bacteria?
Q.
Question 1
What are the differences between autotrophic nutrition and heterotrophic nutrition?
Q. Plants prepare their food using organic substances.
- True
- False
Q. Oral polio vaccine contains live viruses.
- False
- True
Q. Meenu has left the bread slice unattended on a moist place. After 4 days, she observed this.
Which organism is responsible for the formation of this layer?
Which organism is responsible for the formation of this layer?
- Virus
- Fungi
- Protists
- Bacteria
Q.
What is cell theory?
Q. When did first non-cellular life form originate on earth?
- 2 billion years ago
- 3.5 billion years ago
- 1 billion years ago
- 3 billion years ago
Q. Plants prepare their food using organic substances.
- True
- False
Q. State true or false :
1. Addition of salt to pickles prevents growth of bacteria because they turn turgid .
2. Cells that have lost their water content are said to be deplasmolysed.
1. Addition of salt to pickles prevents growth of bacteria because they turn turgid .
2. Cells that have lost their water content are said to be deplasmolysed.
Q. Which of the following are the uses of Lactobacillus?
- Production of curd, cheese, cocoa
- To treat abdominal discomfort
- Production of leavened fodder
- Provides rigidity to jute bags
Q. What are the differences between autotrophic nutrition and heterotrophic nutrition?
Q. What are the differences between autotrophic nutrition and heterotrophic nutrition?
Q. The scientist who gave the concept of spontaneous generation was
- J. B. van Helmont
- Aristotle
- Oparin and Miller
- Francesco Redi