Microscopes Parts and Functions

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Questions and Answers

What is the formula for calculating total magnification in a microscope?

  • Eye Piece - Objective
  • Eye Piece X Objective (correct)
  • Eye Piece + Objective
  • Eye Piece / Objective

Which stain is commonly used for animal cells like skin cells?

  • Malachite Green
  • Iodine
  • Methylene Blue
  • Crystal Violet (correct)

What is the function of the Iris Diaphragm in a microscope?

  • To adjust the height of the stage
  • To adjust the focus of the objective lens
  • To adjust the amount of light reaching the specimen (correct)
  • To adjust the angle of light entering the lens

At high power magnification, how does the field of view compare to low power magnification?

<p>It decreases (C)</p> Signup and view all the answers

Which part of the microscope is responsible for adjusting the clarity and sharpness of the image through small incremental movements?

<p>Fine Adjustment Knob (D)</p> Signup and view all the answers

What is the primary function of a wet-mount slide in microscopy?

<p>To preserve specimen samples (A)</p> Signup and view all the answers

What types of substances can enter cells without the need for protein helpers?

<p>Nonpolar and hydrophobic substances (C)</p> Signup and view all the answers

How does the steepness of the concentration gradient affect the rate of diffusion?

<p>The steeper the gradient, the faster the rate of diffusion (C)</p> Signup and view all the answers

Which type of proteins are channel proteins examples of?

<p>Integral membrane proteins (D)</p> Signup and view all the answers

What is the main function of the sodium/potassium pump in cells?

<p>To maintain proper ion balance for neuron function (B)</p> Signup and view all the answers

Which process involves a cell engulfing fluids and small particles from its surroundings?

<p>Pinocytosis (D)</p> Signup and view all the answers

What is the color indicator used in the Dialysis Bag with Starch and Iodine Lab Demo?

<p>Iodine (C)</p> Signup and view all the answers

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