Specialized Membranes

Question 1

tight junctions

Answer 1

prevent solutes from leaking into the space between cells

found in epithelial cells

Question 2

desosomes

Answer 2

bind adjacent cells by anchoring to their cytoskeletons

found at the interface between two laters of epithelial tissue

Question 3

hemidesomes

Answer 3

have a similar function to desmosomes but their main function is to attach epithelial cells to underlying (base meant) membranes

Question 4

facilitated diffusion

Answer 4

require integral membrane proteins to save as transported or channels for these substrates

Question 5

antiport

Answer 5

particles flowing in opposite directions in a secondary active transport

Question 6

symport

Answer 6

particles flowing in the same direction in a secondary active transport

Question 7

inner mitochondria

Answer 7

contains numerous inholdings (cristae)
which increases the available surface area for the integral preotines
encloses the mitochondrialmatrix where the critic acid cycle produces high energy election carriers used in the electron transport chain.

Question 8

outer mitochondria

Answer 8

highly permeable due to many large pores that allow for the passage of ions and small proteins.
Surrounds the inner mitondrial membrane with small inter membrane space in between two layers

Question 9

membrane receptors

Answer 9

must have both an extracellular and intracellular domain therefore, they are considered transmembrane proteins. in order to initiate a second messenger cascade, they typically display enzymatic activity though some may act strictly as channels.

Question 10

fluid mosaic model

Answer 10

accounts for a dynamic membrane
contains both fatty and carbohydrate derived components.
stabilized by the hydrophobic proteins, which may be found on the cytosolic or extracellular side of the membrane or may run directly through the membrane.