Differentiation seems to result from different _
A. DNA info being turned on in different cells.
B. cells possessing different kinds of DNA information.
C. cells possessing different kinds of chromosomes.
Which of the following is a characteristic of aging cells?
a. Golgi apparatus becomes fragmented.
B. Lipid inclusions accumulate.
c. Glycogen-containing structures decrease.
D. All of the above.
Vesicles are formed by an action of the _
Ribosomes are composed largely of protein and
The tendency for cancer cells to have abnormalities in cellular structures is called
The decrease in skeletal muscle size following a prolonged period of inactivity is most closely assosicated with the activity of _
Movement of molecules through a membrane by filtration depends upon the presence of _
Mitochrondria function to:
A. manufacture protein.
B. release energy from glucose molecules.
C. digiest lipid molecules
If a solution outside of a cell contains a greater concentration of dissolve particles than the contents of the cell, the solution is said to be_
Chemotherapy usually makes use of drugs that affect the cancer cell's
Because of mitosis and cytoplasmic division, the resulting cells contain
A. identical chromosomes
B. identical DNA info
C. All of the Above
What cellular process requires the greatest expenditure of cellular energy?
A nucleolus is composed largely of _ and _.
If the concentration of glucose in the water outside of a cell is higher than the concentration inside,
A. water will tend to enter the cell by osmosis
B. water will tend to leave the cell by osmosis.
C. glucose """
Which process involves the use of specific carrier molecules?
During the metapahse of mitosis, chromosomes
A. line up between centrioles
B. change into chromatin
C. migrate to opposite poles of the cell.
During hemodialysis, if the concentration of glucose in the blood is higher than the concentration of glucose in the dialyzing fluid,
A. glucose concentration of the blood will increase
B. "" of the dialyzing fluid will increase.
C. """ decrease.
Which of the following factors will cuase cancer?
A. virus infections
B. altered genes.
C. exposure to radiation
D. All of the above.
Which of the following is isotonic to red blood cells?
A. .9 % NaCl solution
B. distilled water
D. .9 % glucose solution
Membrane proteins function as
C. selective channels.
Rough ER has _ attached to its surface.
The spreading of molecules of ions from a region of higher concentration to lower concentration is
An organelle that can be described as a fluid-filled membranous sac whose inner lining is folded to form partitions is a
Chemically, a cell membrane is composed largely of protein and
Osmosis is a special form of
Tiny droplets of lipid can pass through a cell membrane by the process called
The organelle that functions to "refine and package" cellular proteins for secretion is the
Movement of sodium ions form a region of lower concentration inside a cell toward a region of higher concentration outside of the cell is