From a bag containing 4 white and 5 black balls a man draws 3 at random. Then the probability that all 3 are black is

#Question id: 1330

#Unit 4. Cell Communication and Cell Signaling

Which of the following are mineralized biological structures/mateials? Please select all that apply.

a) Glycosaminoglycans

b) Bone

c) Pectins

d) Diatom cell walls

#Question id: 1331

#Unit 4. Cell Communication and Cell Signaling

Integrins are the principal receptors used by animal cells to bind to the extracellular matrix. They are heterodimers and function as transmembrane linkers between the extracellular matrix and the actin cytoskeleton. A cell can regulate the adhesive activity of its integrins from within. An example of an integrin containing cell junction is

#Question id: 1332

#Unit 4. Cell Communication and Cell Signaling

Desmosomes

#Question id: 1333

#Unit 4. Cell Communication and Cell Signaling

A group of closely related monomeric GTPases that includes Cdc42, Rac, and Rho is called as

#Question id: 1334

#Unit 4. Cell Communication and Cell Signaling

Flattened, two-dimensional protrusion of membrane, supported by a meshwork of actin filaments, that is extended from the leading edge of crawling epithelial cells, fibroblasts, and some neurons is known as

#Question id: 1335

#Unit 4. Cell Communication and Cell Signaling

Essentially a one-dimensional structure that protrudes from a cell and contains a core of long, bundled actin filaments is known as