What is a parfocal - Study guides, Class notes & Summaries

BIO 390 Lab Exam Questions With 100% Correct Answers What is the primary use of slants? - answerTo provide a solid growth surface that is easier to store/transport. What is the primary use of deeps? - answerTo allow anaerobic bacteria to grow. What is the primary use of broths? - answerTo grow large numbers of bacteria in a small space. Can we determine whether a broth culture is pure by visually inspecting it without a microscope? - answerNo Can we determine whether a deep culture is p...

Microbiology UTA - Lab Practical 1 Questions with Verified Answers Identify the structure indicated by the red arrow... fine focus adjustment knob Identify the structure indicated by the red arrow... field diaphragm lever Which of the following objectives should be used with immersion oil... 100x objective Compound microscopes are able to maintain proper focus of a specimen when moving from low power to higher power magnification due to a property known as... parfocal What two f...

If you are using the 40x objective and have a 10x eyepiece, what is your total magnification? : 400x __________ is the ability to see or distinguish detail or the clarity of the image. : Resolution What can be done to increase the contrast of a specimen to bright background of a light microscope? : You could stain the specimen. Based off of your lab activities, what is this image of? : bacterial capsule When using a parfocal lenses, coarse adjustment is typically only done when the sp...

Identify the structure indicated by the red arrow... : fine focus adjustment knob Identify the structure indicated by the red arrow... : field diaphragm lever Which of the following objectives should be used with immersion oil... : 100x objective Compound microscopes are able to maintain proper focus of a specimen when moving from low power to higher power magnification due to a property known as... : parfocal What two factors determine resolution... : quality of the lens and the wave...

UTA Micro Lab Practical One Review (Quizzes) Latest Update Graded A+ If you are using the 40x objective and have a 10x eyepiece, what is your total magnification? 400x __________ is the ability to see or distinguish detail or the clarity of the image. Resolution What can be done to increase the contrast of a specimen to bright background of a light microscope? You could stain the specimen. Based off of your lab activities, what is this image of? bacterial capsule When using a p...

If the total magnification of a microscope can be increased by simply adding more lenses, why are bright-field light microscopes not outfitted to magnify things greater than 1300×? correct answers Because the resolution limit for a light microscope is about 0.2μm, magnifications above this will not produce clear images. Fluorescent microscopy differs from other types of light microscopy in that it requires correct answers the use of an ultraviolet light source. Why is it important to cen...

What is the process of contamination control? - Aseptic technique What are pipettes - calibrated glass tubes used to measure and dispense small volumes of liquids What color is the bigger vs. smaller micropipettors pipettes? - Green - bigger Blue - smaller What is the purpose of isolating bacteria? - To establish a PURE CULTURE, to be able to study to study the physiology and morphology of a particular bacterial type What is the quickest and most economical method of bacterial isola...

week 1: lab 1: what is a brightfield microscope correct answers a microscope that allows light rays to pass directly to the eye without being deflected by an intervening opaque plate in the condenser ocular correct answers the eyepiece. It consists of two or more internal lenses and has a magnification of 10x 4 objectives correct answers 1. 5x scanning 2. 10x low-power 3. 40x high-dry 4. 100x oil immersion total magnification correct answers multiply the ocular (10) by whatever ...

BIO 390 Lab Exam Questions With 100% Correct Answers What is the primary use of slants? - answerTo provide a solid growth surface that is easier to store/transport. What is the primary use of deeps? - answerTo allow anaerobic bacteria to grow. What is the primary use of broths? - answerTo grow large numbers of bacteria in a small space. Can we determine whether a broth culture is pure by visually inspecting it without a microscope? - answerNo Can we determine whether a deep culture is p...

What is a theory? A unifying explanation that has withstood many attempts to falsify it through scientific investigation over a prolonged period of time What are the 4 unifying theories in biology? - The Cell Theory - The Gene Theory - The Theory of Heredity - The Theory of Evolution Explain cell theory All organisms are made of cells that store hereditary information in DNA Explain gene theory DNA sequences may be altered by mutation or by crossing over and segrega...