Card Set Information
The smallest living unit within the human body is
Which of the following is not a function of membrane proteins?
storage of cellular nutrients
The organelles and the watery component of the cell together is called
Many proteins in the cytosol are ________ that accelerate metabolic reactions.
Which of the following cytoskeleton components moves the chromosomes during cell division?
In the mitochondrion, folds are to cristae as the contained fluid is to
Renewal or modification of the cell membrane is a function of the
Some cells contain large numbers of mitochondria while others have relatively few or none. This suggests that
cells with large numbers of mitochondria have a high energy demand.
The components of ribosomes are formed within
The control center for cellular operations is the
The functional units of DNA that contain the instructions for making one or more proteins are
mRNA is needed to synthesize ________ in the cytoplasm.
The DNA molecule is like a twisted ladder. What molecules form the "sides" of the DNA ladder?
alternating molecules of sugar and phosphate groups
Water molecules and small ions enter a cell through
channels formed by integral proteins.
"Spikes" form on a blood cell when it is placed in a(n) ________ solution.
If the concentration of sodium chloride in the interstitial fluid surrounding cells decreases and the concentration of other solutes remains constant,
the cells will swell.
The intake of small membrane vesicles from the extracellular fluid is called
A defense cell engulfing a bacterium illustrates
The potential difference across the cell membrane is due to the separation of
cations and anions.
What does DNA polymerase do?
Enzyme that builds new strands of DNA
During which phase of the cell cycle does DNA duplication, or replication, take place?
When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister __________.
During which phase of mitosis do sister chromatids line up at the center of the cell?
During which phase of mitosis do the sister chromatids move apart?
During which phase of mitosis do nuclear envelopes and the nucleoli reappear?
During which phase of mitosis do the nuclear envelope and nucleoli disappear?
What is the name of the process by which the cytoplasm divides in two?
The stage in a cell's life cycle in which the cell performs its normal functions and prepares for division is called
During mitosis, chromatids separate into daughter chromosomes during
Before a cell divides, its DNA must be replicated to
supply each new cell with a full set of the genetic material
If a cell has 18 chromosomes and undergoes mitosis how many chromosomes would each daughter cell have?
The genetically programmed death of cells is called
An alternate term for tumor is
As genes are functionally eliminated, the cell becomes limited in the range of proteins it can make. This specialization process is termed