Cell Me Maybe
This tiny structure makes up every living organism.
This scientific idea explains how cells relate to living things.
Cell Theory.
Who connected cells with plants?
Matthias Schleiden
What tool allows scientists to study objects too small to see clearly with only their eyes?
A microscope
What term tells you how much bigger an object appears?
Magnification
A dog, a tree, and a group of bacteria all have this in common.
They are all made up of cells.
A scientist discovers a brand-new living organism. What is one thing they can already predict about it?
It is made up of one or more cells.
Who connected cells with animals?
Theodor Schwann
What type of microscope uses visible light to produce an image?
A light microscope
What term describes how sharp and detailed an image looks?
Resolution
Cells have to perform these three jobs in order to stay alive.
- take in nutrients & water
- obtain energy
- remove wastes
A cut on your skin heals over time. Which idea from cell theory helps explain how new skin cells appear?
New cells come from existing cells.
Which scientist helped establish that new cells come from existing cells?
Rudolf Virchow
In a compound light microscope, which lenses can be switched to change how large the specimen appears?
Objective lenses
Fill in the blank: Two microscope images are the same size, but one looks much sharper. The microscope with the sharper image has better _______.
Resolution.
This is considered the smallest living unit.
A cell.
Why is a cell considered more important to life than a molecule or atom?
A cell is the smallest unit that can carry out the functions of life.
Who observed living microscopic organisms in water?
Anton van Leeuwenhoek
Which type of microscope is better for examining extremely tiny structures: a compound light microscope or an electron microscope?
An electron microscope
To find the total magnification of a microscope, you multiply the magnification of the eyepiece by the magnification of the objective.
A microscope uses a 10x eyepiece and a 20x objective. What is the total magnification?
200x
Muscle cells and nerve cells have different jobs. What does this tell us about cells in the body?
Cells not only work together, but they can be specialized for different functions.
A scientist is studying an unknown sample. What observation would support the idea that the sample came from a living organism?
The sample is made of one or more cells.
Who looked at thin pieces of cork and used the word “cells” for what he observed?
Robert Hooke
A student switches to a stronger objective lens. What happens to the image they see?
The image appears more magnified, allowing the student to see smaller details more clearly.
A student makes an image much larger, but it becomes blurry and no new details appear. What microscope property needs to improve?
Resolution