Comprehensive MCB 100 Q&A Bundle

A response that is uniquely directed against pathogenic Bordetella pertussis would involve what component? Antibodies First line defenses have what aspect in common with each other? They are physical barriers against invading pathogens. Both the innate and adaptive defenses of the immune system wo...

B. Animal viruses and phage both use virus proteins to attach to host-cells by binding host-cell receptors. Which of the following statements about the attachment stage of phage and animal viruses is correct? A. Animal viruses and phage both have tail fibers that mediate attachment to host-cells. B...

Epidemiology is defined as the study of where and when a disease occurs, and how it is transmitted. What is the role of epidemiology? To learn how to treat and prevent various diseases. Which of the following would be considered a fomite? an infected toy Which of the following would be considered...

Germ Theory of Disease proposes that microorganisms are the cause of many diseases Giralamo Fracastoro proposed in 1545 that epidemic diseases were caused by transferable tiny particles or "tinder" that could transmit infection by contact. Agostino Bassi discovered in 1807 that muscardine diseas...

Electron Transport Chain a series of redox reaction centers that are located in a membrane and used to produce a proton motive force (PMF) Fermentation Type of inefficient anaerobic metabolism where the terminal electron acceptor is an organic compound and waste products include lactic acid, acetic...

How do humans acquire this disease? (Histoplasma capsulatum) -This is a disease of old age. People under 60 years old are rarely affected. -This disease is most commonly acquired by inhalation. -This disease is highly contagious and readily passed from person to person by coughing/sneezing. -This d...

What makes agglutination by antibodies possible? Each antibody has at least two antigen-binding sites. What is the role of plasma cells in humoral immunity? Plasma cells produce antibodies. Which of the following most accurately describes how a pathogenic bacterium might be affected by antibodies?...

How do pseudohyphae in yeasts differ from vegetative hyphae in mold? Yeasts use pseudohyphae to invade host tissue, whereas mold use their vegetative hyphae for obtaining nutrients. Based on its Gram status, why are penicillin and other beta-lactam antibiotics effective against Streptococcus pneumo...

An autoclave is able to achieve temperatures higher than that of boiling water_____ a. by increasing the temp higher than boiling water. b. by increasing the time of exposure of boiling water. c. by increasing pressure. d. by decreasing the volume of liquid. c. by increasing pressure. When microbi...

For the given bacterium, growing in a particular medium, at a specified temperature, the growth rate is 1.111 generations per hour. What is the generation time? 54 minutes per generation Some microorganisms can use this type of metabolism to survive and grown in the absence of non-combined oxygen (...

What is the role of lenses in microscopy? Lenses focus either light or electrons to create a magnified image of a specimen. Identify the microscope used to acquire the images Scanning electrons - picture of microorganisms Phase Contrast Light - zoomed out group Transmission electron - individual ph...

B Which one of the following types of microorganism is characterized by having eukaryotic type cells that lack a cell wall? A. archaea B. protozoa C. mold D. virus E. yeast D Which one of the following groups of microorganisms includes some examples that have genomic information stored as ...

Which of the following microorganisms can be used as a biological insecticide? Bacillus thuringiensis Considering industrial products, which of the following is not a primary microbial metabolite? antibiotic produced by Penicillium notum - Antibiotics are produced in the stationary phase ie seconda...

Which of the following is a sign of disease? A. headache B. dizziness C. fever D.nausea E. cramps C. fever Which of the following is a symptom of disease? A.fever B.swelling C.diarrhea D.dizziness E. rash D. Dizziness What steps should a researcher take to establish a cause-and-effect relationship...

Operon A group of genes that are physically next to each other on the chromosome and expressed as a unit. Structural Gene A sequence of DNA that encodes the information needed to direct the synthesis of a protein Regulatory Gene A sequence of DNA encoding information needed to direct the synthesis...

How do we study microbes? As microbiologists, when we conduct scientific inquiry, we think in terms of: What is the evidence? How was it obtained? Scientific method is a process for experimentation that is used to conduct scientific inquiry. We seek experimental evidence that tests what we think we ...

Key distinction of microorganisms from other organisms microorganisms do not form differentiated tissues 1 mm = ? Microns 1000 1 m = ? Mm 1000 1 micron = ? Nm 1000 "little things" small to large atoms ==> small molecules (amino acids, nucleotides, sugars) ==> biological macromolecules (p...