C1 Cell Theory and Technology Flashcards
(57 cards)
Q: Who invented the first compound microscope?
A: Hans & Zacharias Janssen in 1595 using two lenses (ocular + objective).
Q: What did Robert Hooke observe in cork?
A: Small chambers he called “cells” using a 3-lens microscope.
Q: What did Antoni van Leeuwenhoek discover?
A: Moving single cells like bacteria and protozoa
magnification up to 250X.
Q: What is total magnification?
A: Eyepiece × Objective lens. (e.g.
10X × 40X = 400X)
Q: What is the field of view in a microscope?
A: The circular area visible under the microscope lens.
Q: Name three characteristics of living things.
A: Use energy
reproduce
Q: What is spontaneous generation?
A: The outdated idea that life comes from non-living matter.
Q: What experiment did Francesco Redi do?
A: Covered meat to show maggots don’t appear without flies—disproving spontaneous generation.
Q: How did Louis Pasteur disprove spontaneous generation?
A: Used an S-shaped flask to show microorganisms come from the air
not the broth.