問題一覧
1
Which of the following are FALSE concerning microbes?
The primary role of microbes on the planet involves causing disease in animals and humans
2
Which of the following matches the organisms described with the correct domain
Eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources.
3
The observations of Hooke and van Leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory?
The cell theory, stating that all living things are composed of cells
4
Biogenesis refers to the_______.
Development of life form from From pre-existing lifeforms
5
Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. This organism would be classified as which of the following types of organisms?
Fungi
6
A disease breaks out among sheep in California. A scientist takes blood from the sheep and grows a previously unknown organism. That organism is then injected into a healthy sheep. The healthy sheep becomes sick with the same symptoms as the original sheep and dies. That sheep's blood is then cultured, and the original organism is isolated. This applies the principles of ___
Koch’s postulates
7
Proof that a microbe could cause disease was provided by____
Koch
8
A student has obtained a sample of pond water for study. Using the high-power lens, he observes several cells with nuclei. He can conclude that the cells are NOT bacteria.
True
9
Which of the following is true about antibiotics
In some cases, antibiotics are able to kill pathogenic microbes without harming human cells
10
The microbial process of converting sugars to alcohol is known as.
Fermentation
11
All of the following factors contribute to the threat of emerging infectious diseases (EIDs) EXCEPT __
Vaccinations that control epiomiologic spread
12
Microorganisms are involved in each of the following processes EXCEPT
Small production
13
Who is credited with first observing microorganisms?
Anton Van Leeuwenhoek
14
The first antibiotic to be discovered was___
Penicillin
15
____ is the physician first associated with vaccination.
Jenner
16
Which of the following is true of microbes? Hide answer choices
Gene expression in bacteria is very similar to gene expression in humans which facilitates the use of bacteria in recombinant, biotechnology and gene therapy
17
____ is the physician first associated with vaccination.
Jenner
18
Virus are not considered living organisms because they______.
Cannot reproduce by themselves
19
Which of the following is NOT associated with viruses?
Organelles
20
Regarding Louis Pasteurs experiments with the S-neck flask, which of the following statements is true?
All of the answers are correct
21
The infectious agent that causes AIDS is a__________.
virus
22
The use of phenol (carbolic acid) as a wound disinfectant was first practiced by
Lister
23
The first step for directly linking a microbe to a specific disease according to Kochs postulates is to________.
Obtain a sample of blood Or other body fluid from a disease, animal
24
Which of the following represents the correct format for the scientific name?
Staphylococcus aureus
25
How was disproving spontaneous generation associated with developing principles important to microbiology?
Pasterurs experiments with swan neck flask’s supported the concept of microbes in the air, responsible for contaminating nonliving matter
26
Which of the following statements about biofilms is false?
Compared to free, living bacteria biofilms are more sensitive to antibiotics