Inquiry Into Life Chapter 4 Questions
and Answers.
Homeostasis - Answer The process of regulating the entrance and exit of molecules in a cell
to maintain a steady internal environment of a cell and organism.
Peripheral Proteins - Answer Reside on one side of the plasma membrane. They help
stabilize and shape the plasma membrane.
Integral Proteins - Answer Span the plasma membrane and can protrude from one or both
sides.
Fluid-Mosaic Model - Answer The combination of proteins, steroids, and phospholipids in
the plasma membranes.
Glycolipids - Answer Phospholipids that have attached carbohydrate (sugar) chains which
only occur on the outside surface of the plasma membrane.
Glycoproteins - Answer Proteins that have attached carbohydrate (sugar) chains which only
occur on the outside surface of the plasma membrane.
Channel Proteins - Answer An integral protein that is involved in the passage of molecules
through the membrane.
Carrier Proteins - Answer An integral protein that is involved in the passage of molecules
through the membrane by combining with a substance and helping it to move.
Cell Recognition Proteins - Answer Glycoproteins that help the body recognize when it is
being invaded by pathogens so that an immune reaction can occur.
Receptor Proteins - Answer Integral proteins that have a shape that allows a specific
molecule to bind to it. The binding of this molecule causes a protein to change its shape and
thereby bring about a cellular response.
Enzymatic Proteins - Answer Integral proteins that directly carry out metabolic reactions.
Selectively Permeable - Answer A function of the plasma membrane where only certain
substances can move across the membrane while others cannot.
and Answers.
Homeostasis - Answer The process of regulating the entrance and exit of molecules in a cell
to maintain a steady internal environment of a cell and organism.
Peripheral Proteins - Answer Reside on one side of the plasma membrane. They help
stabilize and shape the plasma membrane.
Integral Proteins - Answer Span the plasma membrane and can protrude from one or both
sides.
Fluid-Mosaic Model - Answer The combination of proteins, steroids, and phospholipids in
the plasma membranes.
Glycolipids - Answer Phospholipids that have attached carbohydrate (sugar) chains which
only occur on the outside surface of the plasma membrane.
Glycoproteins - Answer Proteins that have attached carbohydrate (sugar) chains which only
occur on the outside surface of the plasma membrane.
Channel Proteins - Answer An integral protein that is involved in the passage of molecules
through the membrane.
Carrier Proteins - Answer An integral protein that is involved in the passage of molecules
through the membrane by combining with a substance and helping it to move.
Cell Recognition Proteins - Answer Glycoproteins that help the body recognize when it is
being invaded by pathogens so that an immune reaction can occur.
Receptor Proteins - Answer Integral proteins that have a shape that allows a specific
molecule to bind to it. The binding of this molecule causes a protein to change its shape and
thereby bring about a cellular response.
Enzymatic Proteins - Answer Integral proteins that directly carry out metabolic reactions.
Selectively Permeable - Answer A function of the plasma membrane where only certain
substances can move across the membrane while others cannot.
