Phase contrast microscope - Study guides, Class notes & Summaries

A nanometer is defined as: - Answer-10 -9 or one-billionth of a meter True or False: A nanometer is longer than a micrometer - Answer-False A nanometer is 1000x smaller than a micrometer Resolution and contrast are two critical factors that influence your ability to see an object. Explain each. - Answer-Resolution refers to the distance between two objects at which the objects can still be seen as separate. Poor or low resolution means two or more objects may appear as one. Contrast on the...

Test Bank For Microbiology for the Healthcare Professional 2nd Edition VanMeter Questions and Answers| All Chapters 1-25 | Latest Version. Chapter 01: Scope of Microbiology VanMeter: Microbiology for the Healthcare Professional, 2nd Edition MULTIPLE CHOICE 1. In the sixteenth century a father-and-son team, by the name of , produced a compound microscope consisting of a simple tube with lenses at each end. a. van Leeuwenhoek b. Semmelweis c. Janssen d. Hooke ANS: C REF: p. 3 2. “Anim...

microbe living single-celled organism that requires a microscope and has the capacity to reproduce some microbes can be seen without a microscope naming system used:________; 1st word: _________________; always ____________; 2nd word: _______________; full name is always: ____________ binomial; genus --> capitalized; specific epithet; italicized or underlined Who built the compound microscope and coined the term "cell"? Robert Hooke Who first observe...

CSU LIFE 212 Exam 2 UPDATED Actual Questions and CORRECT Answers bright field - CORRECT ANSWER- background is brightly lit- stained, fixed samples (Light Microscope, compound) Phase contrast - CORRECT ANSWER- transparent, unstained samples-special lenses (annular stop turret in our lab exercises)-background light is separated from the light diffraction pattern generated by the specimen (LM, comp)

Microbiology Exam Questions with 100% Correct Answers | Verified | Updated What is the concept of spontaneous generation? - answerliving organisms could develop from nonliving or decomposing matter Who challenged the concept of spontaneous generation by showing that maggots on decaying meat came from flies, not from the meat itself? - answerFrancesco Redi Who showed that mutton broth boiled in flasks and then sealed could still develop microorganisms, which supported the theory of spontan...

Select the appropriate type of microscopy to perform for a given specimen and experimental question. CORRECT ANSWER viruses-->nanometers e. coli-->micrometers yeast-->micrometers period (on a page)-->millimeters types of microscopy -light: x1000-x2000 mag can't see in much detail, need to stain to see more -TEM: x500,000 mag (exterior; living) -SEM: x500,000 mag (really small; internal struct; dead) labeling techniques -staining: can clearly see struct, kills the cell -...

Microbiology Midterm Exam Correctly Answered. Define Micro- - CORRECT ANSWER Less than 1mm and cannot see with the naked eye Need a microscope to see Microbes, microorganisms, germs, bugs What are the 5 groups of microorganisms studied? - CORRECT ANSWER Bacteria--most famous Virus--2nd Fungus--3rd Protozoa--some but few Algae--not a human pathogen What generates 1/2 of the O2 that we breathe and would make life impossible without? - CORRECT ANSWER Microbes What is the smalles...

The simplicity and clarity of Caenorhabditis elegans allowed researchers to - ANSWER-Identify the genes in differentiation of each cell type The diffraction limited resolving power of a standard light microscope is approximately - ANSWER-0.2 Om Chloroplasts are thought to have originated from endosymbiosis of ___ by large host cell. - ANSWER-Photosynthetic eubacteria such as cyanobacteria The eukaryotic nucleus contains ___ DNA molecule (s). - ANSWER-Multiple linear The source of the atm...

Micp exam questions & answers 2024/2025 B. coli trophozoite - ANSWERS- Giardia lamblia trophozoite - ANSWERS- Capsule, cell wall, plasma membrane. Cytoplasm, ribosomes, plasmid, pili, bacterial flagellum, Nucleiod - ANSWERS- S. Aureus ( scanning electron micrograph) - ANSWERS- Lipid membrane, RNA, reverse transcriptase, P24, PI8, GP41, GP120 - ANSWERS- Streptococcus Pneumoniae (s pneumoniae) - ANSWERS Chains of streptococci - ANSWERS Clostridium perfringens / bacillus c...

motility - correct answer semisolid media shows what? isolating/culturing bacteria - correct answer solid media is best for? synthetic; defined - correct answer What are the terms for a media whose exact chemical compositions are known? differential media - correct answer allows growth of several types of microbes and displays visible differences among those microbes selective media - correct answer suppress unwanted microbes and encourage desired microbes reducing media - correct...