Exam 6: A Tour of the Cell

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

A newspaper ad for a local toy store indicates that an inexpensive toy microscope available for a small child is able to magnify specimens nearly as much as the more costly microscope available in your college lab. What is the primary reason for the price difference?

Which of the following macromolecules enter the nucleus of a eukaryotic cell through pores in the nuclear membrane?

Which of the following organelles produces and modifies polysaccharides that will be secreted?

Gaucher disease is the most common of lipid storage diseases in humans. It is caused by a deficiency of an enzyme necessary for the breakdown of lipids. This leads to the accumulation 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 may be involved in Gaucher disease.

One primary advantage of light microscopy over electron microscopy is that ________.

The evolution of eukaryotic cells most likely involved ________.

Which structure is common to plant and animal cells?

Which domains of life are classified as prokaryotes?

Cells require which of the following to form cilia or flagella?

If plant cells are grown on media containing radioactively labelled thymine for one generation, radioactively labelled macromolecules will be detected in which of the following?

Which of the following macromolecules leave the nucleus of a eukaryotic cell through pores in the nuclear membrane?

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

In bacteria, DNA will be found in ________.

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

A defect in which of the following intercellular junctions would allow partially digested material to leak passively between the cells of the small intestine into the abdominal cavity?

Examination of a cell by transmission electron microscopy reveals a high density of ribosomes in the cytoplasm. This observation suggests that this cell is actively producing large amounts of which of the following molecules?

Which of the following frequently imposes a limit on cell size?

A newly discovered unicellular organism isolated from acidic mine drainage is found to contain a cell wall, a plasma membrane, two flagella, and peroxisomes. Based just on this information, the organism is most likely ________.

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through ________.