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TLS Online TPP Program

#Question id: 1121

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?

#Unit 4. Cell Communication and Cell Signaling

  1. Cell-signaling pathways are seen in "primitive" cells such as bacteria and yeast.

  2. Bacteria and yeast cells signal each other in a process called quorum sensing.

  3. Signal transduction molecules identified in distantly related organisms are similar.

  4. Most signals in all types of cells are received by cell surface receptors.

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TLS Online TPP Program

#Question id: 1028

#Unit 4. Cell Communication and Cell Signaling

The capsule
TLS Online TPP Program

#Question id: 1029

#Unit 4. Cell Communication and Cell Signaling

The structures used for motility in both eukaryotes and prokaryotes are
TLS Online TPP Program

#Question id: 1030

#Unit 4. Cell Communication and Cell Signaling

The membranes of eukaryotes and mycoplasma
TLS Online TPP Program

#Question id: 1031

#Unit 4. Cell Communication and Cell Signaling

Phagocytosis
TLS Online TPP Program

#Question id: 1032

#Unit 4. Cell Communication and Cell Signaling

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?
TLS Online TPP Program

#Question id: 1033

#Unit 4. Cell Communication and Cell Signaling

 A research lab is trying to produce new antibiotics. They come up with drugs that detach the hydrophilic heads from the phospholipids in plasma membranes. This drug