Stage of the microscope - Study guides, Class notes & Summaries

Biology A - Cumulative Exam Questions and Answers 100% Pass Which process leads to the creation of ethanol? 1. Fermentation of lactic acid 2. Fermentation of alcohol 3. Citric acid cycle 4. Electron transfer chain Fermentation of alcohol Which type of microscope was first used to observe DNA strands? 1. Tunneling microscope 2. Basic microscope 3. Light microscope with multiple lenses 4. High-resolution electron microscope 2 High-resolution electron microscope M...

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 Lab Midterm Questions and Answers Already Passed Compound microscope 1. Ocular-eyepiece lens (usually 10x) 2. Objective-nosepiece lenses (commonly 4x, 10x, 45x, and 100x) At what magnification do you use the oil immersion technique? 100x. Total Magnification = Magnification (Objective) x Magnification (Ocular) Important Parts of the Microscope Framework, Stage, and Lens System Framework Arm and base are the structural parts of the microscope which support the basic frame. Stage...

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 lensFocuses light through the specimen. How do you calculate t...

How many chromosomes do sperm and egg produce in meiosis? - 23 How many chromosomes do sperm and egg produce in mitosis? - 46 What helps the cell shape and cell to adapt? - cytoskeleton What gives the cell the ability to move and proper? - microtubules What is the main component of blood plasma? - water What is the first step in metabolism of food to cellular energy? - glycolysis What drives the cell/ pushes it forward? - propulsion All humans have how many pairs of chromosomes? - 23 pair...

HESI A2 Biology QUESTIONS AND ANSWERS QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES VERIFIED ANSWERS ALREADY GRADED A+ How many chromosomes do sperm and egg produce in meiosis? - CORRECT ANSWER-23 How many chromosomes do sperm and egg produce in mitosis? - CORRECT ANSWER-46 What helps the cell shape and cell to adapt? - CORRECT ANSWER-cytoskeleton What gives the cell the ability to move and proper? - CORRECT ANSWER-microtubules What is the main component of blood plasma? -...

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

Microbiology Lab Test 1 Questions and Answers Rated A What are the 4 steps to putting a microscope away? 1.) Clean 2.) Lower stage completely 3.) Scanning power objective in position 4.) Tighten silver knob Foods that are made possible by lactic acid fermentation include: Answer: yogurt, sauerkraut, sour cream, buttermilk, cheeses, kimchi. Foods and beverages made possible by ethanol fermentation include: Answer: beer, ale, mead, wines, distilled alcoholic beverages, yeast bread. Foods that a...

2 © OCR 2023 Tissue B is made of unspecialized cells Meristem Tissue A transports water from the plant’s roots 1 A scientist cuts a thin slice from a plant stem, as shown in Fig. 1.1. The slice of stem contains three different tissues. Fig. 1.1 B Plant stem Tissue C (a) Draw lines to connect the description of each tissue with its correct name. One has been done for you. Description Name [1] Capillary Tissue Tissue A Xylem Tissue C transports sugar from the plant’s ...

BIOS 242 Week 2 Assignment; Lab 3 of 14 Onsite; Microscopy Observation of Cells Lab 3: Microscopy- Observation of Cells Learning Objectives: Use the compound light microscope for observation of cells. Identify different types of bacteria based on their shapes. Identify a variety of eukaryotic cells. Introduction: Microbiology is the study of organisms, which cannot be seen with naked eye. You will need help of a microscope to observe these “tiny animalcules” as they w...