science test 12/21/21 Flashcards
Hooke
The first scientist to observe cells and used the compound microscope
Leeuwnhook
discovery of bacteria in ponds and used the simple microscope
schleiden
concluded that all plants are made up of cells
virchow
proposed that all cells come from other cells
Schwann
concluded that all animals are made up of cells
an instrument that makes small objects look larger
microscope
uses more than one lense
compound microscope
a widely accepted explanation of the relationship between cells and living things
cell theory
to enlarge in fact or appearance
magnification
curved outwards
convex
T/F Schwann worked alone to develop the cell theory
False
T/F Organisms who have cells lack a nucleus are called prokaryotes
True
T/F The cell theory is only true for living things that are small
False
T/F Magnification is the ability to make things look larger than they are
True
T/F Chromatin floats in the nucleus which contains genetic material or instructions for the cells functions
True
A light microscope can magnify objects up to
____ times their original size.
1,000
A ______ is an instrument that makes small objects appear larger
Microscope
A ______ is a rigid layer of nonliving material that surrounds the plant cell.
cell wall
______ is the microscope that has better resolution
electron
The lenses in a light microscope magnifies an object by _____ the light that passes through it.
bending
Name the three parts of the cell theory in order
All living things are composed of cells, cells are the basic units of structure and function in living things, all cells are produced from other cells
Describe the difference between a light microscope and an electron microscope
An Electron microscopes uses a beam of light and light microscopes have a mirror that focuses light through the specimen.
How do the cells of bacteria differ from those of other organisms
Bacteria cells lack a nucleus. All of the other organisms contain a nucleus.
Compare and contrast magnification and resolution
Both magnification and resolution help you see things better but magnification makes it larger whereas resolution makes it clearer.
