A cell with a predominance of free ribosomes is most likely
Primarily producing proteins in the cytosol
Cell size is limited by
Surface to volume ratios
In a bacterium we will find DNA in
A membrane enclosed nucleus
Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
Proteins
What is the function of the nuclear pore complex found in eukaryotes?
It regulates the movement of proteins and RNA into and out of the nucleus
Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
Eukaryotic cells have more intracellular organelles than prokaryotes
Which of the following is present in a prokaryotic cell?
Ribosome
Which of the following macromolecules leaves the nucleus of a eukaryotic cell through pores in the nuclear membrane?
RNA
Which structure is common to plant and animal cells?
Mitochondrion
You have a cube of modeling clay in your hands. Which of the following changes to the shape of this cube will decrease its surface area relative to its volume?
Round the clay up into a sphere
A cell with an extensive area of smooth ER is specialized to
Synthesize large quantities of lipids
Asbestos is a material that was once used extensively in construction. One risk from working in building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells with phagocytize asbestos, but are not able
Lysosomes
In a plant cell, DNA may be found
in the nucleus, mitochondria, and chloroplasts.
The Golgi apparatus has a polarity or sidedness to which structure and function which of the following statements correctly describes this polarity?
All of the listed responses correctly describe polarity characteristics of the Golgi function.
Liver is involved in detoxification of many poisons and drugs which of the following structures is primarily involved in this process and therefore abundant in liver cells ?
Smooth ER
Thylakoids, DNA, and ribosomes are all components found in
chloroplasts
What is the most likely pathway taken by a newly synthesized protein that will be secreted by cells??
ER- Golgi- vesicles that fuse with plasma membrane
Are proteins produced other than on ribosomes free in the cytosol or ribosomes attached to the ER?
In the mitochondria
Which of the following is not true? Both chloroplasts and Mitochondria ____
Are part of the endomembrane system
which of the following produces and modifies polysaccharides that will be secreted?
Golgi apparatus
Which organelle is the primary site of ATP synthesis in eukaryotic cells?
Mitochondrion
Which organelles often takes up much of the volume of plant cell?
Vacuole
Which structure is not part of the endomembrane system
Chloroplast
Which structure is the site of the synthesis of proteins that may be exported from the cell?
Rough ER
Cells require which of the following to form cilia and flagella?
Tubulin
Cilia and flagella bend because of
A motor protein called dynein
Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the
Mitochondrion
Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to
Move vesicles within a cell
Ions can travel directly from the cytoplasm of one animal to the cytoplasm of an adjacent cell through
Gap junctions
Plasmodesmata in plant cells are most similar in function to which of the following structure in animal. Dolls
Gap junctions
Sphereocytosis is a human blood disorder associated with a defective cytoskeleton protein in the red blood cells. What do you suspect is the consequences of such a defect?
Abnormally shaped rbc
Suppose a cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane and mitochondria. It could be a cell from
nearly any eukaryotic cell
Suppose a young boy is always tied and fatigued, suffering from a metabolic disease. Which of the following organelles is most likely involved in this disease?
Mitochondria
Which of the following is a characteristic common to all of those extracellular structure?
They are constructed of polymers that are synthesized in the cytoplasm and then transported out of the cell.
Cancer cells given vinblastine would be unable to
Separate chromosomes during cell division