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TLS Online TPP Program

#Question id: 1376

Which of the following statements is NOT TRUE about gap junctions?

#Unit 4. Cell Communication and Cell Signaling

  1. Gap junctions have some functionality of permitting cells to adhere to one another.

  2. Gap junctions form channels that are comprised of connexin proteins.

  3. Gap junctions permit the travel of small molecules back and forth between adjacent cells.

  4. Gap junctions prevent molecules and ions from traveling between cells in the extracellular space.

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TLS Online TPP Program

#Question id: 19032

#Unit 9. Diversity of Life Forms

Which of the following is not common to all phyla of vascular plants? 
TLS Online TPP Program

#Question id: 19033

#Unit 9. Diversity of Life Forms

Microphylls are characteristic of which types of plants? 
TLS Online TPP Program

#Question id: 19269

#Unit 9. Diversity of Life Forms

The sporophytes of mosses depend on the gametophytes for water and nutrition. In seed plants, the reverse is true. From which seed plant sporophyte structure(s) do the immature (unfertilized) gametophytes directly gain water and nutrition? 
TLS Online TPP Program

#Question id: 19270

#Unit 9. Diversity of Life Forms

the result of heterospory is 
TLS Online TPP Program

#Question id: 19271

#Unit 9. Diversity of Life Forms

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms, except 
TLS Online TPP Program

#Question id: 19272

#Unit 9. Diversity of Life Forms

The seed coat’s most important function is to provide