AP BIOLOGY UNIT 2 TOPICS 2.5-2.6 MEMBRANE PERMEABILITY AND TRANSPORT QUIZ

What are the functions of membrane proteins?

• Energy production

• Cell division

• Regulation of body temperature

• Transport of molecules, cell signaling, cell adhesion, and enzymatic activity

Explain the difference between integral and peripheral membrane proteins.

• Integral membrane proteins are smaller in size, while peripheral membrane proteins are larger.

• Integral membrane proteins are embedded within the lipid bilayer, while peripheral membrane proteins are attached to the surface of the membrane.

• Integral membrane proteins are hydrophilic, while peripheral membrane proteins are hydrophobic.

• Integral membrane proteins are found in the cytoplasm, while peripheral membrane proteins are found in the nucleus.

What is the main driving force behind passive transport?

• Active transport

• Facilitated diffusion

• Osmosis

• Concentration gradient

Describe the process of facilitated diffusion.

• Diffusion of molecules across the cell membrane without the help of transport proteins.

• Active transport of molecules across the cell membrane with the help of transport proteins.

• Transport of molecules across the cell membrane through endocytosis.

• Passive transport of molecules across the cell membrane with the help of transport proteins.

What is the primary difference between primary and secondary active transport?

• The primary difference is the involvement of carrier proteins

• The primary difference is the type of molecules transported

• The primary difference is the direction of molecule movement

• The primary difference is the direct use of ATP in primary active transport.

Explain the role of ATP in active transport.

• ATP is not involved in active transport

• ATP is only used in passive transport

• ATP is only used in plant cells for active transport

• ATP provides the energy needed for active transport.

How does membrane permeability affect the movement of molecules across the membrane?

• It allows all molecules to pass through at the same rate

• It only affects the movement of water molecules

• It has no effect on the movement of molecules

• It determines which molecules can pass through the membrane and at what rate.

Discuss the factors that influence membrane permeability.

• Color of the membrane

• Size of the cell

• Temperature, lipid composition, and presence of specific proteins

• Amount of water in the environment

What are the different types of membrane transport mechanisms?

• Passive transport and active transport

• Endocytosis and exocytosis

• Passive diffusion and active diffusion

• Facilitated diffusion and osmosis

Compare and contrast endocytosis and exocytosis.

• Endocytosis and exocytosis both release substances out of the cell.

• Endocytosis releases substances out of the cell, while exocytosis brings substances into the cell.

• Endocytosis brings substances into the cell, while exocytosis releases substances out of the cell.

• Endocytosis and exocytosis both bring substances into the cell.