Chapter 3, Problem 13MIC

Describe the general functions of the following in a eukaryotic cell: the plasma membrane, cytoplasm, DNA, ribosomes, organelles, and cytoskeleton.

Which of the following describes the plasma membrane? 1) phospholipid bilayer surrounding the cell 2) a membrane composed of tiny shelves or cristae 3) single-layered membrane that surrounds the nucleus of the cell 4) double layer of protein enclosing the plasma

Cells are anchored to the extracellular matrix by two main structures. What are they, what are their major components, and how do they anchor the cell?

Gap junctions between cells allow direct contact of the cytoplasm between neighboring cells. What kind of cells might you find these in and how do they facilitate the function of these cells?

Describe the various types of specialized domains that can be established in the plasma membrane? what is the general consequence of these domains (ie why form them )?

Identify the polar, inorganic molecule which can pass freely through the plasma membrane. CH3CH2OH (ethanol) C6H12O6 (glucose) H2O (water) C6H6 (benzene) CO2 (carbon dioxide)

Define cell junction

What is the name of the membrane that delimits the nucleus? To which component of the cell structure is that membrane contiguous?

Identify how each of the following would pass through the plasma membrane: gases, large polar molecules, charged molecules (like ions), hydrophobic molecules, and small polar molecules. Be specific.