35. What type of junction allows for molecules to pass between adjacent cells? A. Gap junction B. Desmosome C. Tight junction

1. Which of the following is responsible for the transport of vesicles along microfilaments? a. Myosin V b. Dynein c. Myson II d. Cofilin e. Kinesin 2. Which of the following is NOT an example of a microfilament-based structure? a. Microvilli structure b. Phagocytosis c. Scission of new vesicles d. Contractile ring e. Vesicle transport

Which of the following are part of adherens junctions? a. Anchor proteins b. Actin filament c. Cadherin dimers d. A and C e. All of the above

12.The a , b, c , and d arrows respectively show: A. a nuclear envelope (arrow a ), a nucleus (arrow b), cilia at the free surface (arrow c ), a mucus cell (arrow d) in simple columnar epithelium d. a b B. the plasma membrane(arrow a), a nucleus (arrow b), microvilli at the free surface (arrow c) , and a goblet cell (arrow d) in simple columnar epithelium C. a nuclear envelope (arrow a), a nucleus (arrow b), cilia at the free surface (arrow c) , a goblet cell (arrow d) in pseuodostratified columnar epithelium 13. Arrows a , b,c and d indicate respectively: A. a nucleus close to the basement membrane (arrow a), a nucleus close to the free surface (arrow b), the exterior (arrow c) and keratinized stratified squamous epithelium(arrow d) B. the exterior (arrow a), a nucleus (arrow b), cytoplasm (arrow c), and transitional Epithelium (arrow d) a C. a nucleus close to the free surface (arrow a), a nucleus close to the basement membrane (arrow b), connective tissue (arrow c) , and non-…

A triple helix filament structure is highly characteristic of:       a. Microtubules     b. Actin microfilaments     c. Collagen   d. Keratins

AuG 36. In the cell depicted in the picture, the ribosOme is labeled a. B b. D с. А d. C е. Е 1P

Why can't ions like sodium (Na+) or potassium (K+) diffuse directly through the phospholipid bilayer?   A. Ions can only use active transport to move through the membrane B. Ions are hydrophobic and are repelled by the polar membrane C. Ions are polar and are repelled by the nonpolar part of the membrane D. Ions need to become stable before entering the cell

What is the function of tight junctions? a. To allow cells to move b. To keep cells from moving c. To seal neighboring cells together and prevent leakage of d. extracellular molecules† e. To keep cancer cells together, forming a tumor

Where in the cell does translation occur?   A. Ribosomes in the nucleus   B. Ribosomes on the endoplamic reticulum   C. Ribosomes free-floating in the cytosol   D. both A and B   E. both B and C

Considering a normal self cell, what might you expect to find in MCH I molecules on the cell surface?  a. nothing. b. bacterial fragments c. normal self epitopes