AP Bio Insta-Review Topic 2.6: Membrane Transport

Passive transport moves substances…

• From high to high concentration

• From high to low concentration

• From low to low concentration

• From low to high concentration

Passive transport requires…

• Energy input

• No energy input

Active transport requires…

• Energy

• Transport protein

• Both energy & transport protein

• Neither energy nor transport protein

Process of exporting materials with vesicles?

• Endocytosis

• Exocytosis

• Facilitated Transport

• Simple Diffusion

Where are the proteins made for export by exocytosis?

• Golgi

• Nucleus

• Ribosome

• Rough ER

Describe the process of receptor-mediated endocytosis

Answer explanation

A ligand (signaling molecule) binds to a receptor protein. After signal transduction, the membrane undergoes invagination to create a “pit” that forms the vesicle.

What does the product of phagocytosis bind to?

• Endoplasmic Reticulum

• Lysosome

• Nucleus

• Mitochondria

Amount of ATP used to move 30 moles of glucose down concentration gradient

• 0 moles ATP

• 15 moles ATP

• 30 moles ATP

• 60 moles ATP

Tags

NGSS.HS-LS1-7

What type of movement requires no energy, down concentration gradient

• Active transport

• Passive transport

Move glucose from GI tract into blood supply.

Identify type of transport used.

• Active

• Facilitated

• Simple