2F The Protein Secretory Pathway

Question 1

vesicle

Answer 1

a small fluid-filled organelle enclosed in a phospholipid membrane that transports substances around the cell

Question 2

bulk transport

Answer 2

a type of active transport that uses vesicles to move large molecules or groups of molecules into or out of the cell

Question 3

active transport

Answer 3

the movement of molecules across a semipermeable membrane requiring an energy input

Question 4

secretory products

Answer 4

the substances inside a vesicle that are being transported out of the cell

Question 5

plasma membrane

Answer 5

the phospholipid bilayer with embedded proteins which separates the intracellular environment from the extracellular environment

Question 6

rough endoplasmic reticulum

Answer 6

a membranous organelle shaped like a series of connected, flattened cylinders that folds and transports proteins via its attached ribosomes

Question 7

Golgi apparatus

Answer 7

an organelle made of flattened sacs of membrane involved in modifying, sorting and packaging proteins

Question 8

mitochondrion

Answer 8

a double-membrane bound organelle that is the site of the second and third stages of aerobic cellular respiration