AP Bio Insta-Review Topic 2.9: Mechanisms of Transport

What moves the vesicles to the membrane for exocytosis?

• Actin

• Dynein

• Kinase

• Myosin

What provides the path for vesicles moving to membrane?

• Intermediate filaments

• Microfilaments

• Microtubules

• Cytosolic Proteins

In carrier proteins, how is it specific for transport?

• Active site binds to the solute

• Allosteric site binds to the solute

• Binding site opens channel

• ATP provides needed energy

Passive transport

• Does not require input of energy and moves against gradient

• Does not require input of energy and moves with gradient

• Requires input of energy and moves against gradient

• Requires input of energy and moves with gradient

Active transport

• Does not require input of energy and moves against gradient

• Does not require input of energy and moves with gradient

• Requires input of energy and moves against gradient

• Requires input of energy and moves with gradient

Facilitated diffusion

• Does not use transport proteins and is a type of active transport

• Does not use transport proteins and is a type of passive transport

• Uses transport proteins and is a type of active transport

• Uses transport proteins and is a type of passive transport

Endocytosis

• Does not require ATP and allows large particles to enter the cell

• Does not require ATP and allows large particles to leave the cell

• Requires ATP and allows large particles to enter the cell

• Requires ATP and allows large particles to leave the cell

How does Ca²⁺ move across membrane from high to low?

• Active transport

• Bulk transport

• Facilitated transport

• Simple diffusion

How are secreted proteins moved across the membrane?

• Active transport

• Bulk transport

• Facilitated transport

• Simple diffusion

How does oxygen enter blood cells in the lungs?

• Active transport

• Bulk transport

• Facilitated transport

• Simple diffusion