Chapter 6, 6.3,6.4,6.5
Which of the following is a possible reason for grouping the peroxisomes with chloroplasts and mitochondria? (eText Concept 6.5)
All of these organelles appear to increase in number by dividing.
Which of the following statements about chloroplasts and mitochondria is true? (eText Concept 6.5)
Chloroplasts and mitochondria synthesize some of their own proteins.
Which of the following is FALSE in respect to eukaryotic chromosomes?
Chromosomes appear only as a cell is about to divide
A researcher made an interesting observation about a protein made by the rough endoplasmic reticulum and eventually found in a cell's plasma membrane. The protein in the plasma membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the __________. (eText Concept 6.4)
Golgi apparatus
Which of the following sequences represents the order in which a protein made in the rough endoplasmic reticulum might move through the endomembrane system? (eText Concept 6.4)
Golgi apparatus → lysosome
Which of the following is FALSE? (eText Concept 6.5)
Mitochondria contain ribosomes in the intermembrane space.
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.
A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized __________. (eText Concept 6.4)
in the rough endoplasmic reticulum
Which of the following categories best describes the function of the rough endoplasmic reticulum?
manufacturing
Which of the following five membranes is most likely to have a lipid composition that is distinct from those of the other four? (eText Concept 6.5)
mitochondrial outer membrane
Which type of cell is most likely to have the largest number of mitochondria? (eText Concept 6.5)
muscle cells in the legs of a marathon runner
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?
nucleus
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? (eText Concept 6.5)
ribosomes
Which of the following LACK membranes as part of their structure?
ribosomes peroxisomes
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? (eText Concept 6.4)
embedded in the plasma membrane, functioning in the transport of molecules into the cell
Which of the following is/are most likely to be involved in the process of producing proteins for a chloroplast or mitochondrion? (eText Concept 6.4)
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
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 __________. (eText Concept 6.5)
in bacterial cells
you would expect a cell with an extensive Golgi apparatus to __________.
secrete large amounts of protein
In which of the following sites might protein synthesis occur in a typical eukaryotic cell? (eText Concept 6.5)
the cytoplasm, the rough endoplasmic reticulum, and the mitochondria
