With regard to cytoskeletal structure and function, a) Outline the structure and organisation of cytoskeletal proteins in a eukaryotic, epithelial cell.

What integral membrane protein family made of two membrane-spanning chains (α and β) is involved in attaching cells to their extracellular microenvironment? a)     lamininsb)     fibronectinsc)     integrinsd)     myosinse)     lysins

1) Why can cell membranes be polar? What does polar mean? 2) What are the basic cytoskeletal components of a cell? What does an animal cell have that no other cell has in the cytoskeleton?

Filaments connected to the dense plaque underlying the membrane in a desmosome course outward into the cytoplasm. These filaments are composed of the protein _____ and are otherwise known as ______. a)     actin, microfilamentsb)     keratin, microfilamentsc)     actin, intermediate filamentsd)     keratin, intermediate filamentse)     tubulin, intermediate filaments

Describe cellular processes which involve the coordination of cytoskeletal elements.

Describe the major functions of the endoplasmicreticulum, Golgi complex, and lysosomes.

Explain the presence of the protein identified by peptide keratin, type I cytoskeletal ?

3) The structure that confers structural strength on the cell is known as the A) cytoplasmic membrane. B) cell wall. C) ribosome. D) cytoplasm.

21.

28) organelle which functions as the location of lipid synthesis, does not have ribosomes. a) smooth endoplasmic reticulum b) ribosomes  c) rough endoplasmic reticulum d) mitochondria