State The Resolution And Magnification That Can Be Achieved By A Light Microscope

Submitted By Gieeee
Words: 475
Pages: 2
Open Document
F211 Biology Questions
Module 1 Cells 1. State the resolution and magnification that can be achieved by a light microscope. * The maximum magnification that can be achieved by a light microscope is x1500 and the maximum resolution is 200nm. The limit of resolution is due to the magnitude of the wavelength of light. Two objects can be distinguished only if light waves can pass between them. 2. Explain the difference between magnification and resolution. * Magnification is the degree to which the size of an image is larger than the object itself, whereas resolution is the degree to which it is possible distinguish between two objects. 3. Explain the need for staining samples in light microscopy. * Staining is used in light microscopy to make the specimens visible because some biological material is colourless. 4. Calculate the linear magnification of an image such as a photomicrograph or electron micrograph. * Actual Size = Image Size / Magnification * Magnification = Image Size / Actual Size * Image Size = Actual Size x Magnification

Unit | Symbol | Equivalent in Metres | Fraction of a Metre | Metre | m | 1 | one | Decimetre | dm | 0.1 | one tenth | Centimetre | cm | 0.01 | one hundredth | Millimetre | mm | 0.001 | one thousandth | Micrometre | µm | 0.000 001 | one millionth | Nanometre | nm | 0.000 000 001 | one thousand millionth |

5. State the resolution and magnification that can be achieved with the electron microscope. * The maximum magnification that can be achieved using a Transmission Electron Microscope (TEM) is x500 000, whereas using a Scanning Electron Microscope (SEM) is x100 000. The maximum resolution is 0.2nm. 6. Explain the need for staining samples for use in electron microscopy. * Staining is used in electron microscopy to make the specimens visible to the human eye. 7. Explain the importance of the cytoskeleton in providing mechanical strength to cells, aiding transport within cells and enabling cell movement. * Cells contain fibres made of protein.
Show More

Related Documents: State The Resolution And Magnification That Can Be Achieved By A Light Microscope

Verilog HDL: A Guide To Digital Design And Synthesis

Verilog HDL: A Guide to Digital Design and Synthesis, Second Edition By Samir Palnitkar Publisher: Prentice Hall PTR Pub Date: February 21, 2003 ISBN: 0-13-044911-3 Pages: 496 Written for both experienced and new users, this book gives you broad coverage of Verilog HDL. The book stresses the practical design and verification perspective ofVerilog rather than emphasizing only the language aspects. The informationpresented is fully compliant with the IEEE 1364-2001 Verilog HDL standard. • • • •…

Words 32844 - Pages 132

off grid renewable energy Essay

The system that is currently being implemented is the “Rural Renewable Energy Development Project” in Bhutan. These projects have been selected based on their significant contributions to rural electrification in their respective countries. 1. Introduction: According to the United Nations Global Initiative “Sustainable Energy for All” nearly one in five people around the world do not have access to modern energy services. Approximately three billion people across the globe currently rely…

Words 3172 - Pages 13

Golding Inc Essay example

B Q U A N T I T A T I V E M O D U L E Linear Programming DISCUSSION QUESTIONS 1. Students may select from eight LP applications given in the introduction. These include school bus scheduling, police patrol allocation, scheduling bank tellers, selecting product mix, picking blends to minimize cost, minimizing shipping cost, developing production schedules, and allocating space. 2. LP theory states that the optimum lies on a corner. All three solution techniques make use of the “corner point” feature…

Words 7554 - Pages 31

Notes: Cellular Control

OCR Biology A2 Unit 2 Module 1 Notes-Cellular Control GENE: length of DNA that codes for one or more polypeptides. POLYPEPTIDE: a polymer consisting of a chain of amino acid residues joined by peptide bonds. GENOME: the entire DNA sequence of that organism. The human genome consists of about 3 billion nucleotide base pairs. PROTEIN: large polypeptide-100 or more amino acids. The genetic code: the sequence of bases on a gene (length of DNA) provides a code, it is a triplet code (3 bases codes for…

Words 3425 - Pages 14

Assignment 3 communications controll Essay

Understand data communications media and networks used with modern programmable Task #1 “describe the importance of health and safety when working with programmable controlled equipment” [P5] Describe the importance of health and safety when working with programmable controlled equipment. A range of ‘what if’ scenarios for various applications could be used to cover the full requirements of the unit content. An instrumented control system is an electrical, electronic, or programmable…

Words 1776 - Pages 8

Cognitive Radio And Networking Research At Virginia Tech

INVITED PAPER Cognitive Radio and Networking Research at Virginia Tech A large research team with a wide range of expertiseVfrom ICs and reconfigurable computing to wireless networkingVworks to achieve the promise of cognitive radio. By Allen B. MacKenzie, Senior Member IEEE , Jeffrey H. Reed, Fellow IEEE , Peter Athanas, Senior Member IEEE , Charles W. Bostian, Fellow IEEE , R. Michael Buehrer, Senior Member IEEE , Luiz A. DaSilva, Senior Member IEEE , Steven W. Ellingson, Senior Member IEEE…

Words 23283 - Pages 94

Essay On Visual Literacy

1 Introduction to the project Reason to start this project This is a final year project appointed to me by my personal tutor during my third year study as an undergraduate for mechanical engineering in University of Nottingham We wanted to design a better experiment for 1st year undergraduate engineering students regarding heat conduction in a solid material. How do this experiment benefits your learning? Learn about LABView, circuit connection for temperature data acquiring using thermocouple…

Words 5880 - Pages 24

Fukushima: Ionizing Radiation Essay

radioisotopes in diagnosis and therapy are being used extensively. Some types of radiation are more damaging than others. Alpha radiation is the most damaging to human tissues because its particles are strongly ionizing. Neutrons are also damaging to cells, because they interact very easily with body tissue, which contains a lot of water. They are a highly penetrating form of radiation. Beta and gamma radiation are the least damaging forms of nuclear radiation but they are able to penetrate deeper into…

Words 5920 - Pages 24

Essay about Chemistry: Water and Textbook Pages

Module 3: Water (Summary) 1. Water is distributed on Earth as a solid, liquid and gas Students learn to: • Define the term solute, solvent and solution A solution is a homogeneous mixture in which the dispersed particles are so small (molecules or ions) that they never settle out and cannot be seen by a microscope. Solute is the substance which is dissolved in a solution. Solvent is the substance which dissolves other substances. Reference: textbook page 18 • Identify…

Words 3233 - Pages 13

Balance of Values Essay

Module 4: Assignment 2 Balancing Values Kristin M. Sims Contemporary Issues in Criminal Justice CJA498-AUO R01 Instructor Jeff Cudworth May 8, 2014 “Over the last 30 years, the population of the federal prison system has increased exponentially-nearly 800 percent-largely due to the overrepresentation of those convicted of drug offenses, many of whom are low-level and non-violent. Today, a record 218,000 people are confined within the Federal Bureau of Prisons (BOP)…

Words 1599 - Pages 7