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33 Cards in this Set

  • Front
  • Back
movement of materials in and out of the cell is controlled by the
cytoplasm or cell membrane
cell membrane
The scientist who first described living cells as seen under the microscope was:
a van leewenhook
b schielden
c hooke
d schwann
c hooke
In a typical animal cell, the cytoplasm occupies
a almost all the volume
b a little more than 1/2 the volume
c 1/4 of the volume
d a very small part of the volume
a almost all the volume
Each of the following is a main idea of the cell theory except:
a all organisms are composed of cells
b the cell is the basic nit of life
c all cells are similar in structure and function
d all cells ceme from pre-existing cells
c all cells are similar in structure and function
the folded system of membranes that forms a network of interconnected compartments inside the cell is the __________________
endoplasmic reticulum or ER
In a cell, the tangles of long strands of DNA form the ______________
chromatin
In a cell, the breakdown of molecules in order to release energy occurs in the
mitochondria or golgi
mitochondria
organisms that have cells that contain organelles
a prokaryote
b eukaryote
b eukaryotes
this cell type is generally found in multi cellular organisms
a prokaryote
b eukaryote
a prokaryotes
short hairlike projections used for locomotion are
cilia or flagella
flagella
In a cell, the sites of protein synthesis are the
ribosomes or nucleolus
ribosomes
the functions of a cukaryotic cell are managed by the _________
nucleus
which of the following structures is the most complex?
a cell
b organ system
c organ
d tissue
b organ system
the network of tiny rods and filaments that form a framework for the cell is called the ___________
cytoskeleton
cell walls of plants are composed mainly of __________
cellulose
this structure is not found in animal cells
cell wall, chloroplast
the pigment that gives green plants their green color is _____________
chlorophyll
cells that have the same function are organized into
tissues or organs
tissues
One advantage os electron microscopes over light microscopes is their
a size
b 2-d image
c higher maginfication
d use of live specimens
c higher magnification
cell structures that contain digestive enzymes are
plastids or lysosomes
lysosomes
in a chloroplast the stacks of membranous stacks are called
a stroma
b plastids
c grana
d thylakoid membrane
d thylakoid membrane
this scientist concluded that all plants are composed of cells
a schielden
b schwann
c hooke
d leewenhooke
a schielden
scientists discovered ____ years ago that cells have a cytoskeleton
A 200
B 20
C 2
D 2000
20
t/f microtubules of the cytoskeleton are thin, hollow, cylinders made of protein
true
the first scientist who described living things through a microscope was ____________
A schielden
b schwann
c hook
d leweenhook
hooke
this scientist concluded that all animals are composed of cells
a schielden
b schwann
c hooke
d leewenhooke
b schwann
the microscope type that allowed scientists to view cells more closely, relatively new technology
Electron microscope
this object uses 2 or more glass lenses to magnify cells
compound light microscope
organisms with a cell that lack internal structure
a prokaryote
b eukaryote
a prokaryote
this cell type does not have a true nucleus
a prokaryote
b eukaryote
a prokaryote
this cell type is usually found in unicellular organisms
a prokaryote
b eukaryote
b prokaryote
If a cell contains a nucleus, it must be a
a plant cell
b eukaryotic cell
c animal cell
d prokaryotic cell
b eukaryotic cell
the term least closely related to the others is:
a cytoskeleton
b microtubule
c microfilament
d cell juncture
d cell juncture