Cell Structure and Functions
When viewing a specimen through a light microscope, scientists use ________ to
distinguish the individual components of cells.
A.
B.
C.
D.
a beam of electrons
radioactive isotopes
special stains
high temperatures
The ________ is the basic unit of life.
A.
B.
C.
D.
organism
cell
tissue
organ
Prokaryotes depend on ________ to obtain some materials and to get rid of wastes.
A.
B.
C.
D.
ribosomes
flagella
cell division
diffusion
Bacteria that lack fimbriae are less likely to ________.
A.
B.
C.
D.
adhere to cell surfaces
swim through bodily fluids
synthesize proteins
retain the ability to divide
Which of the following is surrounded by two phospholipid bilayers?
E.
F.
G.
H.
the
the
the
the
ribosomes
vesicles
cytoplasm
nucleoplasm
Peroxisomes got their name because hydrogen peroxide is:
A.
B.
C.
D.
used in their detoxification reactions
produced during their oxidation reactions
incorporated into their membranes
a cofactor for the organelles’ enzymes