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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?

#SCPH01 Biochemistry

  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: 761

#SCPH28 | Zoology

In a DNA double helix each type of base forms a stable base pair with only one type of base. When bases on an RNA strand are involved in base pairing, which bases can form stable base pairs with more than one type of base?
TLS Online TPP Program

#Question id: 762

#SCPH01 Biochemistry

Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?
TLS Online TPP Program

#Question id: 762

#I Life Science/ Life Sciences Group – I-V

Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?
TLS Online TPP Program

#Question id: 762

#SCPH05 I Biotechnology

Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?
TLS Online TPP Program

#Question id: 762

#SCPH28 | Zoology

Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?
TLS Online TPP Program

#Question id: 763

#SCPH01 Biochemistry

Which of the following could be an effect of miRNA regulation?