Exam 4: A Tour of the Cell

The extracellular matrix may influence animal cell behavior by communicating information from the outside to the cytoskeleton of the cell via which of the following molecules or structures?

Which of the following statements correctly describes a function of the Golgi apparatus?

Which structure is not part of the endomembrane system?

When a potassium ion (K⁺)moves from the soil into the vacuole of a cell on the surface of a root,it must pass through several cellular structures.Which of the following correctly describes the order in which these structures will be encountered by the ion?

A cell with an abundance of free ribosomes is most likely carrying out which of the following processes?

Intermediate filaments attach to which of the following structures in the plasma membrane?

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

Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components.In animal cells,which of the following organelles contains these hydrolytic enzymes?

A mutation that inactivates an enzyme involved in the modification of sugars associated with glycoproteins is most likely to affect the function of which of the following cellular structures?

In an animal cell,DNA may be found in which of the following organelles?

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

The total volume of plant cells is often significantly greater than the total volume in animal cells.The most reasonable explanation for this observation is that

Some key innovations in the evolution of eukaryotic cells from a prokaryotic ancestor are membrane-bound organelles.Which of the following organelles or features is a common structure shared by both eukaryotic cells and their prokaryotic ancestors?

Which structure is common to plant and animal cells?

Motor proteins provide for molecular transport of materials in cells by interacting with what type(s)of cellular structures?

A researcher disrupts cells and separates subcellular components using centrifugation.Which of the following correctly lists the order in which cellular components will pellet when disrupted cell mixtures are centrifuged at increasingly higher speeds?

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

Which organelle or structure is primarily involved in the synthesis of oils,phospholipids,and steroids?

Which of the following statements concerning cells of bacteria and archaea is correct?

Thylakoids,DNA,and ribosomes are all components found in