Exam 6: A Tour of the Cell

The cell walls of bacteria,fungi,and plant cells and the extracellular matrix of animal cells are all external to the plasma membrane.Which of the following is a characteristic common to all of these extracellular structures?

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its

Which structure is not part of the endomembrane system?

Which type of organelle is found in plant cells but not in animal cells?

A biologist wants specifically to examine the surfaces of different types of cells in kidney tubules of small mammals.The cells in question can be distinguished by external shape,size,and 3-D characteristics.Which of the following would be the optimum method for her study?

Researchers tried to explain how vesicular transport occurs in cells by attempting to assemble the transport components.They set up microtubular tracks along which vesicles could be transported,and they added vesicles and ATP (because they knew the transport process requires energy).Yet,when they put everything together,there was no movement or transport of vesicles.What were they missing?

Which of the following statements about the cytoskeleton is true?

Thylakoids,DNA,and ribosomes are all components found in which organelle?

The nuclear lamina is an array of filaments on the inner side of the nuclear membrane.If a method were found that could cause the lamina to fall into disarray,what would you expect to be the most likely consequence?

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

The smallest cell structure that would most likely be visible with a standard (not super-resolution)research-grade light microscope is

Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?

If an individual has abnormal microtubules due to a hereditary condition,in which organs or tissues would you expect dysfunction?

Use the following figure to answer the questions below. -What type of cell is pictured above?

Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?

When biologists wish to study the internal ultrastructure of cells,they can achieve the finest resolution by using

Gaucher disease is the most common of lipid storage diseases in humans.It is caused By a deficiency of an enzyme necessary for lipid metabolism.This leads to a collection of Fatty material in organs of the body including the spleen,liver,kidneys,lungs,brain,and Bone marrow.Using your knowledge of the structure of eukaryotic cells,identify the statement below that best explains how internal membranes and the organelles of cells would be involved In Gaucher disease.

All of the following are part of a prokaryotic cell except

One of the key innovations in the evolution of eukaryotes from a prokaryotic ancestor is the endomembrane system.What eukaryotic organelles or features might have evolved as a part of,or as an elaboration of,the endomembrane system?

In a liver cell detoxifying alcohol and some other poisons,the enzymes of the peroxisome remove hydrogen from these molecules and