Microbiology Chapter 1, 3, 4 Assignment Questions
The scientist who built the first simple microscopes was:
Antonie van Leeuwenhoek
Microbes are found everywhere on the planet except in the deeper layers of the earth's crust, which are largely considered to be sterile.
False
The Theory of Evolution is not widely accepted among scientists because it still remains unproven
False
The outer membrane contributes an extra barrier in gram-positive bacteria that makes them impervious to some antimicrobial chemicals, so they are generally more difficult to inhibit or kill than are gram-negative bacteria.
False
The microorganisms that recycle nutrients by breaking down dead matter and wastes are called
decomposers
Adulthood and mating of helminths occur in which host?
definitive host
Adulthood and mating of helminths occurs in the
definitive host
Which of the following does not pertain to endotoxin?
is found in acid-fast bacterial cell walls
The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
sex pili
Macromolecules are important for life because
some can be used for energy and replacement of important molecules and some can be used for enzymes and genetic information
All of the following are helminths except
trypanosomes
Using slide 72 and 73 of lecture 1, which of the following is true? Select all that apply.
*Bacteria and Archaea are more closely related compared to Eukaryota. *Domain Eukaryote is different from domain Archaea. *Analyzing RNA sequences can be used to put organisms into domains. *Bacteria and Archaea evolved almost the same time.
Based on slides 13-14 of the lecture 1 presentation which of the following is correct? Multiple answers may be chosen
*Bacteria contributes to an anoxygenic photosynthesis. *Microbes contributed to the overall content of the soil and water. *Microbes are important for human life on earth.
Slides 7-11 gives information on which of the following?
*Bacterial shapes and arrangement *Some differences between the arrangement in cocci bacteria and bacilli bacteria
Which of the following according to slides 3-5 is false? Select all that apply
*Bacterias have several chromosomes, cytoplasm and ribosomes just like eukaryotes *Eukaryotic cells have histones but not bacteria. *Glycocalyx is an internal structure found in some bacteria
Use slide 16-20 to answers the following question. Multiple answers may be selected. Which of the following make use of microbes?
*Bioremediation *Genetic engineering
Select all the statement below pertaining to fungi
*Can be found as unicellular, colonies or multicellular *heterotrophic and saprobic *According to slide 42 sporangiospores and conidiospores are sexual spores
Which of the following is associated with proteins? Select multiple answers.
*Heat, alcohol and acid can denature proteins *They are made up of amino acids so therefore have amino groups and carboxylic functional groups *Enzymes are proteins but they cannot be denatured. ??
The structure depicted on slide 15 is part of which of the following? Multiple answers may be selected.
*peritrichous, monotrichous, lophotrichous and amphitricous arrangements *flagella
Which of the following, based on slides 46-54 is FALSE?
*plasmids contain mostly essential DNA pieces conferring protective traits. *C.diff, B anthraces and S, aureus produce endospores.
Which of the following do members of the domain Bacteria and Archaea both possess?
70S ribosomes
which of the following is the correct names for each of the arrangement given?
A)Monotrichous b) lophotricous c) amphitrichous d) peritrichous
In figure which diagram of a cell wall is a gram negative cell wall?
A. thinner wall layer
NCLEX Prep: Test Bank Question: Please read the clinical scenario, and the answer questions: Breonna Jones is 16 years old, 5'4", and weighs 93lb. She was admitted 2 days ago after collapsing at the local high school. Her parents knew she was skinny but had no idea how emancipated she was, or that her life was in danger. As you develop Breonna's plan of care, you take into consideration the four major biological molecules that are building blocks of all cells. You inform the patient that it is important for her to maintain a diet rich in carbohydrates, lipids, and proteins, so that each of these macromolecules can be metabolized to form a high-energy compound called
ATP
The eukaryote cell membrane is composed of
All the choices are correct
Select the correct descending taxonomic hierarchy (left to right)
family, genus, species
Which of the following are the domains of the Woese-Fox system of taxonomy
Bacteria, Archaea and Eukarya
Select the false statement
Both bacteria and eukaryotes have histones
Which of the following is not considered a microbe?
C. Mushroom
From which sources can fungi derive nutrients?
Dead plant and animals
Which of the following structures are possessed by some, but not all, prokaryotes?
Flagella
Which of the following bacterial appendages is not used for attachment?
Flagellum
You identify a bacterium ad gram-negative using the Gram stain method. In Bergey's Manual of Determinative Bacteriology, this bacterium belongs to.......
Gracilicutes
teichoic acid and lipoteichoic acid are properties of
Gram positive bacteria
Which of the following is incorrect concerning the theory of evolution?
It is just a theory and therefore experiments cannot be designed to support it.
Which of the following is not true about gram-positive cell wall?
It protects the cell in a hypertonic environment.
Which of the following is not a characteristic of bacteria?
Its DNA wrapped around histones.
Which of the following terms best describes the cell in Figure
Lophotrichous flagella
Which of the following is not a human use of microorganisms?
Manufacturing copper wire
Which of the following organelles is responsible for energy production in the cell?
Mitochondria
Which of the following is (are) examples of nontypical bacteria?
Mycobacterium and other acid-fast bacteria
Where in a bacterial cell would you find the genetic material?
Nucleolus
Which of the following is the correct order of the phrases of fungi sexual reproduction?
Plasmogamy- karyogamy- meiosis
Place the organisms below in order from largest to smallest
Protozoan, Virus, Bacterium, Helminth
Which scientific name is written correctly?
Staphylococcus aureus
Diseases such as heart disease, gastric ulcers, diabetes, and multiple sclerosis have a microbial cause
True
Koch's postulates are criteria used to establish that
a specifice microbe is the cause of a specific disease
The__________stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.
acid-fast
Protozoan cysts
ar helpful in surviving unfavorable conditions
Some bacterias may have multiple shapes depending on environmental conditions. This phenomenon is know as
pleomorphism
Which of the following will have a formula (CH2O)?
carbohydrates
Which organelle is found in algae but not found in protozoa or fungi?
chloroplast
When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear asa visible network of dark fibers called the
chromatin
Bacterial cells could have any of the following appendages except
cilia
Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called
dimorphic
The nuclear envelope is a single layer
false
When humans manipulate the genes of microorganisms, the process is called
genetic engineering
Lysozyme is most effective against
gram-positive organisms
The purine_______ always binds with the pyrimidine _______ in DNA and RNA
guanine, cytosine
Larvae and eggs are developmental forms of
helminths
The long, threadlike branching cells of molds are called
hyphae
Which of the following is a taxon that contains all the other taxa listed?
kingdom
Which organelle contains where enzymes and electron carriers for aerobic respiration are found?
mitochondria
Filamentous fungi are called
molds
The woven, intertwining mass of hyphae the make up the body of a mold is a(n)
mycelium
A bacterial genus that has waxy mycelia acid in the cell wall is
mycobacterium
NCLEX Prep Test Bank Question: Wanda is a medical assistant and the newest employee of your healthcare team. You notice that she does not wash her hands in between patients. From your microbiology background, you understand that microbes are not visible with the naked eye. As the only nurse in your small medical office, you take it upon yourself to educate Wanda on the importance of aseptic techniques. Viruses may also be carries from patient to patient transmitting diseases even though they differ from bacteria in that the are
noncellular proteins
Cell membranes are composed of:
phospholipids
Cilia are structure for motility found primarily in:
protozoa
Cell walls are not found in
protozoa`
Concerning endospores
they are for resistance rather than reproduction
Microbes are described as being ubiquitous because
they are found almost everywhere on earth
The motile, feeding stage of protozoa is called the
trophozoite