Microbiology Quiz: CHAPTER 1 (The Microbial World and You)
Microbiology Quiz 1The Microbial World and You
You scored %%SCORE%% out of %%TOTAL%%.
Your performance has been rated as
Your answers are highlighted below.
The first observations of bacteria were made by:
Question 1 Explanation:
Bacteria were first observed by Antonie van Leeuwenhoek in 1676, using a single-lens microscope of his own design.
Which of the following does not belong with the others?
Question 2 Explanation:
Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small--individually not more than one single cell.
Which of the following scientists and their discoveries is not correctly matched?
Koch-germ theory of disease
Question 3 Explanation:
Sir Alexander Fleming, a Scottish biologist, defined new horizons for modern antibiotics with his discoveries of enzyme lysozyme (1921) and the antibiotic substance penicillin (1928).
All of the following are products produced naturally by microorganisms except which one?
Which of the following statements about bacteria is not true?
Everyone has bacteria in and on the body.
The only good bacterium is a dead bacterium.
Bacteria are essential to the presence of life on Earth.
Bacteria are used to make some foods.
Bacteria can produce antibiotics
Question 5 Explanation:
Bacteria are absolutely necessary for all life on this planet – for every known ecosystem – including the human ecosystem! Without bacteria, there would be no life, as we call life, on the earth.
Which of the following is not a characteristic of Bacteria
all are pathogenic
most possess cell walls
all are unicellular
bacteria can reproduce asexually
cell walls are composed of peptidoglycan
Question 6 Explanation:
There are thousands of species that live in soil, water, decaying organic matter, etc. that are not pathogenic.
The germ theory of disease was proven by:
Question 7 Explanation:
Pasteur postulated the germ theory of disease, but his attempt to prove his theory was unsuccessful. However, Robert Koch provided the proof by cultivating anthrax bacteria apart from any other type of organism.
Microbes are not responsible for:
synthesis of acetone and alcohol.
synthesis of vitamins.
oxygen generation via photosynthesis.
breaking down wastes.
Question 8 Explanation:
Antibodies are "natural" chemicals produced by the body's immune system in response to infecting micro-organisms. Do not confuse antibodies with antibiotics.
Pasteurization is used for all of the following purposes except which?
to remove pathogens from food
to remove both pathogens and spoilage microbes from food
to remove spoilage microbes from food
to remove all microorganisms from food
to increase shelf-life of food
Question 9 Explanation:
Unlike sterilization, pasteurization is not intended to kill all micro-organisms in the food. Instead pasteurization aims to reduce the number of viable pathogens so they are unlikely to cause disease.
All of the following are beneficial uses of microorganisms except which one?
producing foods and chemicals
none of the above
recycling elements in the environment
Emerging infectious diseases can be due to:
humans moving to previously uninhabited areas.
deforestation and earthquake.
changes or mutations in existing organisms.
all of the above.
Which of the following fields of study and its example are not correctly matched?
parasitology-study of all parasites
bacteriology-study of E. coli O157:H7
immunology-study of vaccines
mycology-study of athlete's foot
Question 12 Explanation:
Parasitology is the study of parasites, their hosts, and the relationship between them.
Which one of the following was the most significant difference in the experiments that resulted in Pasteur's proof of biogenesis being accepted over Needham's proof?
Microbes were never grown in the broth.
Microbes did not grow until the broth was inoculated.
He used chick broth instead of beef broth.
The broth could support life.
Air was present.
Which of the following types of microorganisms and its example is not correctly matched?
Question 14 Explanation:
Protozoa are a diverse group of single-cell eukaryotic organisms, many of which are motile.
The laboratory and medical procedures employed to prevent microbial contamination are called:
Question 15 Explanation:
Aseptic technique refers to a procedure that is performed under sterile conditions. This includes medical and laboratory techniques.
Which one of the following is an example of bioremediation?
use of Pseudomonas to remove uranium from soil at weapons depots
use of Bacillus thuringiensis to kill crop-eating insects
use of Sacccharomyces cerevisiae to make wine
use of cowpox virus to vaccinate against smallpox
Question 16 Explanation:
"Remediate" means to solve a problem, and "bio-remediate" means to use biological organisms to solve an environmental problem such as contaminated soil or groundwater.
In the scientific name, Escherichia coli, Escherichia is the:
Question 17 Explanation:
A Genus is the hierarchal point in the scientific system for grouping related organisms together. It is the point above a species but below family.
The cell theory states that are made up of cells.
All living things
Question 18 Explanation:
The cell was discovered by Robert Hooke in 1665. He examined (under a coarse, compound microscope) very thin slices of cork and saw a multitude of tiny pores that he remarked looked like the walled compartments a monk would live in. Because of this association, Hooke called them cells, the name they still bear.
All of the following are examples of biotechnology except which one?
antibiotic production by bacteria
enzyme production by bacteria and fungi
bread-making with bacteria and fungi
bacteria that cause disease
Which of the following is a scientific name?
Question 20 Explanation:
The scientific name of a species is formed by the combination of two terms The first name (capitalized) is the genus of the organism, the second (not capitalized) is its species.
Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results
There are 20 questions to complete.
You have completed
Your score is
You have not finished your quiz. If you leave this page, your progress will be lost.
Final Score on Quiz
Attempted Questions Correct
Attempted Questions Wrong
Questions Not Attempted
Total Questions on Quiz
Answer Choice(s) Selected
Need more practice!
Did you like this? Share it: