Phase contrast microscopy Samenvattingen, Aantekeningen en Examens

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....

Test Bank for Genetics A Conceptual Approach, 7th Edition Benjamin Pierce Test Bank for Chapter 2: Chromosomes and Cellular Reproduction Multiple-Choice Questions 1. Which of the following statements is false? a. Errors in chromosome separation are rarely a problem for an organism. b. Errors in chromosome separation can result in a miscarriage. c. Errors in chromosome separation can result in cancer. d. Errors in chromosome separation can result in a child with severe handicaps. e. Erro...

BIO 353 test 1 multiple choice -ASU questions & answers 2024 A student in a cellular biology laboratory is faced with the task of detecting protein X in muscle cells taken from a rat. The tissue is required to be live while under analysis. Which type of microscopy should be employed? a) Phase contrast light microscopy b) Transmission electron microscopy c) Scanning electron microscopy d) Fluorescence microscopy e) None of the above - ANSWER-d) Fluorescence microscopy Which...

Test Bank Essential Cell Biology 5th Edition Alberts Hopkin Table of Contents CHAPTER 1: CELLS: THE FUNDAMENTAL UNITS OF LIFE ................................................................ 2 CHAPTER 2: CHEMICAL COMPONENTS OF CELLS ........................................................................ 21 CHAPTER 3: ENERGY, CATALYSIS, AND BIOSYNTHESIS .............................................................. 48 CHAPTER 4: PROTEIN STRUCTURE AND FUNCTION ......................................

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 -...

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...

Electron beams can not be used to resolve images of objects. T/F? Correct Answer-False In all types of electron microscopy, electrons pass through the specimen. Correct Answer-False This type of light microscopy can be used to view very thin cells or flagella. It does that by using this property of light. Correct Answer-Dark field; Light scattering In this type of microscopy, light is delayed by passing through the sample and so objects look as if they are out of phase. It employs this ...

TDSHS Asbestos Inspector Exam Question and answers rated A+ 2023/2024Per AHERA, management plan includes: - correct answer complete record of inspection, including construction plans, exact locales of ACBM, assessment of physical condition of ACBM moderate disturbance classification of disturbance factors - correct answer ACBM which shows any one of the following characteristics: accessible, subject to vibration, or subject to air erosion; ACBM on corridor walls, a ceiling underneath a gym, ...

TesT Bank for nesTer’s Microbiology: A Human Perspective 9th Edition By Denise Anderson, Sarah Salm, Deborah Allen Nester’s Microbiology, 9e (Anderson) Chapter 1 Humans and the Microbial World 1) The scientist usually considered the first to see microorganisms, which he called "animalcules," was ________. A) Redi B) van Leeuwenhoek C) Pasteur D) Tyndall Answer: B Section: 01.01 Topic: History of Microbiology Bloom's: 1. Remember Learning Outcome: 01.01 Describe the key e...

Bio 181 ASU Exam 1 Questions & Answers 2024 Primitive prokaryote cell evolved into_________ - ANSWER-pro-eukaryotic cell Eukaryote - ANSWER-single celled organism Paramecium - ANSWER-distant ancestor of our cells, limited by # of biomolecular machines within itself What does a paramecium use cilia for? - ANSWER-to move What was the precursor to our kidneys? - ANSWER-contractile vacuole SEM(Scanning Electron Microscopy) - ANSWER-cannot view living cells What can parameciums...