The Cell and the Microscope Flashcards
an outer covering of cells
epidermis
controls what comes into and goes out of the cell
plasma membrane
control center of the cell
nucleus
large storage structures
vacuole
all cellular material outside the nucleus
cytoplasm
functional plant or animal
organism
each cell possesses a life of its own
cell theory
outer covering around plant cell made of fibrous material
cell wall
a functioning organism represents life
organismal theory
small structure(s) within nucleus
nucleolus
One difference between human cheek cells and onion cells is:
the absence of a cell wall in human cells
theory states that the cell is the basic unit of life
Cell theory
Theory states that the organism is the basic unit of life.
Organismal Theory
The spherical object within a cell which controls its activity is called the _____.
nucleus
The cellular material outside the nucleus is called the _____.
cytoplasm
The fibrous outer covering surrounding plant cells is the:
cell wall
In a microscope
ability to tell two points apart
resolving power
In a microscope
magnifies an object using light and lenses
optical microscope
In a microscope
magnifies using streams of electrons
electron microscope
In a microscope
single body tube
monocular
In a microscope
lens found in the eyepiece
ocular lens
In a microscope
two eyepieces
binocular
In a microscope
magnifying lens closest to the specimen
objective lens
Robert Hooke was the first to use the term ______________ to describe tiny compartments in the cork.
Cell
Galileo used ______________ to examine the principles of lenses, thus improving on previous attempts at magnification.
mathematics
_____ was/were the first to carefully document observations of blood cells, sperm cells, and other microorganisms.
Anton van Leeuwenhoek
_____, sixteenth century eyeglass maker(s), experimented with glass lenses and a tube and found that objects could be magnified greatly.
Hans and Zaccharias Janssen
Very little has changed in the structure of light microscopes since the 1840’s, when an American, _____, was able to significantly improve the quality of the magnified images with his microscopes.
Charles Spencer
The electron microscope was invented in Germany during the 1930’s by _____.
Max Knott and Ernst Ruska
Order of telescope
ocular lens
First
Order of telescope
body tube
Second
Order of telescope
revolving nosepiece
Third
Order of telescope
objective lens
Fourth
Order of telescope
coverslip
Fifth
