With regard to tight junctions,
A) one face of the cell, the apical surface, is in contact with other cells.
B) they allow free movement of ions and molecules between cells.
C) they are responsible for holding cardiac muscle together.
D) they are composed of special proteins called connexins.
E) they block the movement of basolateral integral membrane proteins to the apical surface.
E) they block the movement of basolateral integral membrane proteins to the apical surface.
You might also like to view...
How many unique mRNA codons can be constructed from the four different RNA nucleotides?
A. four B. 12 C. 16 D. 61 E. 64
Which of the following is properly paired for the anammox reaction?
A. Sulfate (SO4-2) as the electron donor; Sulfite (SO3-2) as the electron acceptor B. Nitrate (NO3-) as the electron donor; Nitrite (NO2-) as the electron acceptor C. Phosphate (PO4-3) as the electron donor; Carbonate (CO3-2) as the electron acceptor D. Ammonium (NH4+) as the electron donor; Nitrite (NO2-) as the electron acceptor
The landing platform for pollen in flowering plants is the ____
a. filament b. stigma c. anther d. style e. ovary
Muscle that is striated and involuntary is ____
a. skeletal only b. smooth only c. cardiac only d. both skeletal and cardiac e. both cardiac and smooth