Finding: Ancestry have similar organizations with conservation of the positions (of at least some) of the introns.

Example: The globin and DHFR genes are examples of a genes that share a common ancestor

TLS Online TPP Program

#Question id: 1336

#Unit 4. Cell Communication and Cell Signaling

A distinct form of membrane protrusion that is often observed when cells are cultured on a pliable extracellular matrix substrate is known as

TLS Online TPP Program

#Question id: 1337

#Unit 4. Cell Communication and Cell Signaling

The promotion of metastasis by the loss of E-cadherin suggests that E-cadherin inhibits metastasis. Which one of the following types of proteins are most likely involved in the inhibition of metastasis by E-cadherin?

TLS Online TPP Program

#Question id: 1338

#Unit 4. Cell Communication and Cell Signaling

Plasmodesmata most closely resemble which of the following structures in animal cells?

TLS Online TPP Program

#Question id: 1339

#Unit 4. Cell Communication and Cell Signaling

Which of the following cellular structures serve similar functions in plants and animals, respectively?

Plants                    Animals 

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#Question id: 1340

#Unit 4. Cell Communication and Cell Signaling

Extracellular matrices are LEAST likely to play a major role in which of the following?

TLS Online TPP Program

#Question id: 1341

#Unit 4. Cell Communication and Cell Signaling

Which of the following molecules forms extracellular cross-linked fibrils of great tensile strength?