A Microbiology Trivia Quiz

2.

Hooke's discovery concerning life's smallest structural units marked the beginning of the cell theory.

True
False

Correct Answer

A. True

Explanation

Hooke's discovery concerning life's smallest structural units refers to his observation of cells in cork under a microscope. This discovery was significant because it led to the development of the cell theory, which states that all living organisms are composed of cells. Therefore, the statement that Hooke's discovery marked the beginning of the cell theory is true.

Rate this question:

2

3.

Alexander Fleming discovered penicillin.

True
False

Correct Answer

A. True

Explanation

Alexander Fleming is credited with the discovery of penicillin, a groundbreaking antibiotic that revolutionized medicine. In 1928, Fleming accidentally left a petri dish of Staphylococcus bacteria uncovered, and noticed that a mold called Penicillium notatum had contaminated the dish. He observed that the bacteria near the mold had been killed, leading to the realization that the mold produced a substance with antibacterial properties. This discovery laid the foundation for the development of penicillin as a potent antibiotic, saving countless lives and shaping the field of modern medicine. Therefore, the statement "Alexander Fleming discovered penicillin" is true.

Rate this question:

4.

Which of these is a type of bacteria?

Cyanobacteria
Salmonella
Bacillus
All of these

Correct Answer

A. All of these

Explanation

All of the options listed (Cyanobacteria, Salmonella, and Bacillus) are types of bacteria. Cyanobacteria are photosynthetic bacteria commonly found in aquatic environments. Salmonella is a genus of bacteria that can cause food poisoning and other illnesses in humans and animals. Bacillus is a genus of bacteria that includes both harmful and beneficial species, some of which are used in biotechnology and agriculture. Therefore, all of the options are types of bacteria.

Rate this question:

2

5.

Viruses can only be seen with an electron microscope.

True
False

Correct Answer

A. True

Explanation

Viruses are extremely small and can only be observed under an electron microscope due to their size. Light microscopes, which are commonly used in laboratories, cannot provide the necessary magnification to visualize viruses. Electron microscopes use a beam of electrons instead of light, allowing for much higher magnification and resolution. This enables scientists to study the structure and characteristics of viruses in detail, leading to a better understanding of their behavior and potential treatments. Therefore, the statement "Viruses can only be seen with an electron microscope" is true.

Rate this question:

6.

What's the full form of EID?

Emerging initial diagnosis
Emerging infectious diseases
Emerging infectious diagnosis
Emergency infectious diseases

Correct Answer

A. Emerging infectious diseases

Explanation

The full form of EID is "Emerging Infectious Diseases." This term refers to diseases that have recently appeared in a population or have existed but are rapidly increasing in incidence or geographic range. These diseases often pose a public health threat due to their potential to cause epidemics or pandemics.

Rate this question:

1

7.

Every affirmation is true, except:

Microbes help maintain a balance between living organisms and the environment.
Microbes can be used commercially.
Microbes are absent from animals' and humans' intestines.
Only a small portion is pathogenic.

Correct Answer

A. Microbes are absent from animals' and humans' intestines.

Explanation

The given statement "Microbes are absent from animals' and humans' intestines" is incorrect. Microbes are actually present in the intestines of animals and humans, where they play a crucial role in digestion and overall gut health. These microbes help break down food, produce essential vitamins, and maintain a balance in the gut ecosystem. Therefore, this statement contradicts the fact that microbes are present in animals' and humans' intestines.

Rate this question:

2

8.

What are the main domains?

Protists, bacteria, archaea, eukarya
Protists, fungi, plants, bacteria
Bacteria, eukarya, plants
Bacteria, archaea, eukarya

Correct Answer

A. Bacteria, archaea, eukarya

Explanation

The answer is Bacteria, archaea, eukarya. These are the three main domains of life. Bacteria and archaea are both prokaryotes, which are single-celled organisms that lack a nucleus. Eukarya, on the other hand, includes all organisms with eukaryotic cells, which have a nucleus and other membrane-bound organelles. This classification system is based on the differences in cellular structure and organization.

Rate this question:

3

9.

Pasteur showed that microorganisms exist in the air and can contaminate sterile solutions and that air itself can create microbes.

True
False

Correct Answer

A. False

Explanation

The statement is false. Pasteur actually showed that microorganisms do not spontaneously generate in sterile solutions, contradicting the prevailing belief of spontaneous generation at the time. He demonstrated that microorganisms can only enter sterile solutions from external sources, such as the air or contaminated objects. This experiment led to the development of the germ theory of disease and the importance of sterilization in medical practices.

Rate this question:

7

10.

Around what percent of microbes are bacteria present in the gastrointestinal tract?

40 percent
60 percent
90 percent
99 percent

Correct Answer

A. 90 percent

Explanation

The gastrointestinal tract is known to harbor a large number of microbes, including bacteria. Research has shown that approximately 90 percent of the microbes present in the gastrointestinal tract are bacteria. This high percentage highlights the significant role that bacteria play in the gut, influencing various aspects of human health, such as digestion and immune function.

Rate this question:

A Microbiology Trivia Quiz

Prokaryotic cells are

Quiz Preview

Hooke's discovery concerning life's smallest structural units marked the beginning of the cell theory.

Alexander Fleming discovered penicillin.

Which of these is a type of bacteria?

Viruses can only be seen with an electron microscope.

What's the full form of EID?

Every affirmation is true, except:

What are the main domains?

Pasteur showed that microorganisms exist in the air and can contaminate sterile solutions and that air itself can create microbes.

Around what percent of microbes are bacteria present in the gastrointestinal tract?