Practice Test- Chapter 6 Bio
whats the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores
In which of the following sites might protein synthesis occur in a typical eukaryotic cell?
the cytoplasm, the rough endoplasmic reticulum, and the mitochondria
Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?
motor proteins
Which of the following is/are likely to limit the maximum size of a cell?
All of the choices are correct.
Which of the following is a possible reason for grouping the peroxisomes with chloroplasts and mitochondria?
All of these organelles appear to increase in number by dividing.
Which of the following statements correctly describes a common characteristic of a plant cell wall and an animal cell extracellular matrix?
Both are permeable to water and small solutes.
Which of the following statements about chloroplasts and mitochondria is true?
Chloroplasts and mitochondria synthesize some of their own proteins.
In terms of cellular function, what is the most important difference between prokaryotic and eukaryotic cells?
Eukaryotic cells are compartmentalized, which allows for specialization.
Which of the following sequences represents the order in which a protein made in the rough endoplasmic reticulum might move through the endomembrane system?
Golgi apparatus → lysosome
the extracellular matrix of the animal cell has all of the following molecular components except
a middle lamella
Consider two cells with the same volume but with very different surface areas due to differences in their shapes. The cell with the larger surface area is likely to __________
be involved in the rapid uptake of compounds from the cell's environment
the organelle that is a plant cells compartment for the storage of inorganic ions such as potassium and chloride is the
central vacuole
animal cells have unique organelles called ______ that are composed of structures called ___
centrosomes; centrioles
Dye injected into a plant cell might be able to enter an adjacent cell through __________
plasmodesmata
dye injected into a plant cell might be able to enter an adjacent cell through
plasmodesmata
which of the following groups is primarily involved in synthesizing molecules needed by the cell?
Ribosomes, rough endoplasmic reticulum, and smooth endoplasmic reticulum
What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
Subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores.
Which of the following five membranes is most likely to have a lipid composition that is distinct from those of the other four
mitochondrial outer membrane
Which type of cell is most likely to have the largest number of mitochondria?
muscle cells in the legs of a marathon runner
Which of the following groups is primarily involved in synthesizing molecules needed by the cell?
ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum
Which of the following organelles might be found inside other organelles?
ribosomes, peroxisomes
You would expect a cell with an extensive Golgi apparatus to __________
secrete large amounts of protein
the function of the rough er
to synthesize proteins that are secreted as glycoproteins
Which of the following is FALSE?
Mitochondria contain ribosomes in the intermembrane space.
Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?
The intestinal cells are bound together by tight junctions.
Basal bodies are most closely associated with which of the following cell components?
cilia
basal bodies are most closely associated with which cell component
cilia
which statement is true of the cytoskeleton
components of the cytoskeleton often mediate the movement of organelles within the cytoplasm
Where would you expect to find proteins involved with movement of structures within a cell?
cytoskeleton
Consider a protein that is made in the rough endoplasmic reticulum. You observe that when the synthesis of the protein is completed, the protein is located in the ER membrane. Where else in the cell might this protein be found?
embedded in the plasma membrane, functioning in the transport of molecules into the cell
what is the most important difference between prokaryotic and eukaryotic cells?
eukaryotic cells are compartmentalized which allows for specialization
Chloroplasts and mitochondria are thought to be of prokaryotic origin. One piece of evidence that supports this hypothesis is that these organelles contain prokaryotic-like ribosomes. These ribosomes are probably most similar to ribosomes found __________.
in bacterial cells
A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized __________.
in the rough endoplasmic reticulum
a protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized
in the rough er
the walls of plant cells are largely composed of polysaccharides and proteins that are synthesized
in the rough er and golgi apparatus
cell junctions in plant cells are called ____ and communicating junctions in animal cells are called ___
plasmodesmata; gap junctions
evidence that supports the prokaryotic origins of mitochondria and chloroplasts are all of the following except
that mitochondria and chloroplasts have multiple copies of linear DNA molecules associated with their inner membranes
your intestine is lined w individual cells. no fluid leaks between these cells from the gut into your body. why
the intestinal cells are bound by tight junctions
A dish of animal cells was grown in the presence of radioactive phosphorous. The phosphorous largely ended up in nucleotides inside the actively growing animal cells. In which cellular structure or structures would you predict the majority of the radioactive phosphorous to accumulate?
the nucleus
Which of the following is/are most likely to be involved in the process of producing proteins for a chloroplast or mitochondrion?
free cytoplasmic ribosomes
Which of the following organelles is UNLIKELY to show enhanced abundance in pancreatic cells that secrete large amounts of digestive enzymes?
free cytoplasmic ribosomes
Microtubules and microfilaments commonly work with which of the following to perform many of their functions?
golgi apparatus
Which of the following structures is found in eukaryotic but NOT prokaryotic cells?
mitochondria
microfilaments function is cell motility including __
muscle contraction, amoeboid movement, cytoplasmic streaming in plants