Objective lens - Study guides, Class notes & Summaries

Final exam Straighter line microbiology 100% SOLUTION 2023//2024 In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - ANSWER Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OHconcentration of the solution? - ANSWER 10-8 M Fungi are able to reproduce asexually by creating conidiospores and spo...

Who is the father of microscopy? Antonie van Leeuwenhoek Lamp: produces visible light to illuminate the specimen Condenser: collects light and directs it through the stage opening (converges or focuses the rays of light to a single point) Iris diaphragm: regulates the amount of light available to the objective lens Factors that affect microscope function: Resolving power, numerical aperture, magnification, working distance Resolving power: ability of a microscope to differentiate two ...

Microbiology Straighterline Final Exam 2023 Questions and Answers. phylogeny - ANSWER The study of evolutionary relationships among organisms is called ______. Last Universal Common Ancestor - ANSWER The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. always harmful to their host - ANSWER Organisms called parasites are ______. Thermal hot springs warmed by heat from earth's interior - ANSWER Which of the following does not indicate microbe involveme...

Biol 227 Lab Exam; Questions and Answers 100% Correct body of microscope Answer-arm and base light source Answer-Projects light upwards through the diaphragm, the specimen, and the lenses. Has on/off switch and intensity knob eyepiece Answer-Contains the ocular lens ocular lens Answer-magnifies the image 10x total magnification Answer-objective lens x ocular lens field of view Answer-The area visible through the microscope eyepiece

Veterinary Urinalysis Questions and Answers 100% Pass What are the three factors that influence urine composition? 1. Dietary intake 2. Metabolic activity 3. Overall health For optimal viewing of urine under a microscope, should you adjust the condenser up or down, and should the contrast be increased or decreased? LOWER the condenser INCREASE the contrast What are the three main steps involved in urinalysis? 1. Physical assessment: - Amount - Color - Clarity - Smell - S...

Bio principles Exam 2 – Brooks Latest Update Graded A+ Cytology the study of cells Robert Hooke - observed cork could float - discovered a honeycomb-like structure in a cork slice using a primitive compound microscope - only saw cell walls as this was dead tissue - coined the term "cell" for these individual compartments he saw Two types of microscopes: 1. Light Microscope 2. Electron Microscope Light Microscope - light is focused on specimen by a glass condenser lens -...

Certified Paraoptometric Questions and Answers 2024/2025 (Verified Answers) Already Passed. An optometrist is licensed by which governing body? State The person generally responsible for grinding or duplicating lenses is the ________. Optician An instrument worn on the examiners head and used to view the back of the eye is call a/an _______. Binocular indirect opthalmoscope Kerat (root word) Cornea A test that does not require responses from the patient is called a/an __________ test. Ob...

Microbiology LAB Exam 1 with Complete Solutions Microscope- The Condenser focuses the light ging into the objective lens Microscope- The Iris Diaphragm adjusts the amount of light going into the objective lens Microscope- Nosepiece holds the objective lenses and rotates to change from one objective to another Microscope- Coarse Objective Knob moves the stage larger distances to help get the object in focus Microscope- Fine Adjustment Knob moves the stage smaler increments to help get the obj...

Bio 227 Lab Exam 1; Questions and Answers 100% Correct total magnification Answer-ocular lens x objective lens Proximal Answer-Nearer to the trunk of the body Distal Answer-Farther from the trunk of the body Anterior Answer-front of the body Posterior Answer-back of the body Lateral Answer-away from the midline

Why is oil immersion used? To reduce the amount of light rays that are refracted away from the objective lens. It increases numerical aperture and maintains a uniform light speed. increase the resolving power of a microscope. Prevents refraction of light. What parts of the microscope does light travel through? Illuminator-The light source for the microscope.Diaphragm-Controls the amount of light entering the condenser. Condenser lens-Focuses light through the specimen. How do you calculate...