Phase contrast microscope - Study guides, Class notes & Summaries

Portage Learning BIOD 171 Microbiology Lecture Exam Key 1-6 Exams 1. What are the two major types of nucleic acids and their roles? DNA- deoxyribonucleic acid RNA- Ribonucleic acid DNA- Cellular life has DNA and a role that DNA has is long-term storage of information, it holds the characteristics of living organisms. RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes proteins Tru...

MCATresolution - correct answer differentiate close objects magnification - correct answer increase size eyepiece magnification - correct answer 10x objective magnification - correct answer 4x,10x,20x, 100x Cell Theory - correct answer -all living things composed of cells -cell=basic functional unit of life -cells from other cells only -cells have DNA (parent-->daughter cells) total magnification - correct answer eyepiece x objective diaphragm (microscope) - correct answe...

Microbiology Midterm Questions - Jersey College, Microbiology Midterm Jersey College, 500 Questions and Correct Answers, All Chapters Are Covered. Complete Solutions For Your Midterm Exam. Updated 2024. (ch.1) One type of microscope that provides a three-dimensional image of a specimen is a Scanning Electron Microscope (ch.1) One type of microscope capable of observing living microorganisms is the: Phase-Contrast Microscope (ch.1) Which scientist is most responsible for ending the controv...

MCATresolution - correct answer differentiate close objects magnification - correct answer increase size eyepiece magnification - correct answer 10x objective magnification - correct answer 4x,10x,20x, 100x Cell Theory - correct answer -all living things composed of cells -cell=basic functional unit of life -cells from other cells only -cells have DNA (parent-->daughter cells) total magnification - correct answer eyepiece x objective diaphragm (microscope) - correct answe...

Resolution Correct Answer-small dist b/t 2 pts can be distinguished; D = .61λ/Nsinα, want lower D; Light microscope 200nM Bright field microscopy Correct Answer-normal light type Phase-contrast Correct Answer-altered phase interference of unobstructed light; looks like cells are surrounded by light DIC Correct Answer-3D looking cells Confocal Correct Answer-3D imaging with fluorescence, progessively capture full surface in focus by removing out of focus; normal point-scanning vs....

Portage Learning: Microbiology Module 3 Already Graded A Define the measurements micrometer and nanometer. A micrometer (μm) is defined as being one-millionth of a meter and is commonly designated at 10-6 meters. A nanometer (nm) equals 10-9 m or one-billionth of a meter. What are the two critical factors that influence your ability to see an object? Resolution and contrast. Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or low r...

Bright Field Microscope CORRECT ANSWER Most widely used Dark object, bright background Examine stained and unstained specimens Made by putting light through specimen Dark field microscope CORRECT ANSWER Image is lighter than illuminated background Uses a condenser on the light microscope Phase contrast microscope CORRECT ANSWER Used with live specimen Produces image with specimen against gray background Can see internal cells Scanning electron microscope CORRECT ANSWER Detailed 3D...

Microbiology for Healthcare Professionals Midterm Exam (Ch.1-17) || Questions & Answers (Rated A+) Microbiology for Healthcare Professionals Midterm Exam (Ch.1-17) || Questions & Answers (Rated A+) One type of microscope that provides a three-dimensional image of a specimen is a: a. Phase- contrast microscope b. Transmission electron microscope c. Bright- field microscope d. Scanning electron microscope - ANSWER - d. Scanning electron microscope One type of microscope capable of o...

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

micrometer one millionth of a meter, 10^ -6 2. nanometer one billionth of a meter, 10^-9 3. Resolution the distance between two objects at which the objects still can be seen as separate 4. What happens if the resolution is poor? Poor or low resolution means two (or more) objects may appear as one. 5. Contrast the difference in light absorbance between two objects. 6. What happens if there is poor contrast? gives a high background and makes the visualization of multiple objects diff...