Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8707
TLS Online TPP Program

#Question id: 11925

The chloroplasts of land plants are thought to have been derived according to which evolutionary sequence?

#Unit 9. Diversity of Life Forms
  1. cyanobacteria → green algae → land plants
  2. cyanobacteria → green algae → fungi → land plants
  3. red algae → brown algae → green algae → land plants
  4. red algae → cyanobacteria → land plants
More Questions
TLS Online TPP Program

#Question id: 19125

#Unit 12. Applied Biology

Which nature of interaction between the analytes and the biological material used in biosensor?
1. The analytes may be converted into a new chemical molecule (by enzymes)
2. The analytes may simply bind to the biological material present on the biosensor 
3. The analytes may be converted into dimer molecule 
Which of the following above statements are correct?
TLS Online TPP Program

#Question id: 1243

#Unit 4. Cell Communication and Cell Signaling

One form of receptor desensitization can be mediated by negative feedback involving phosphorylation of the receptor itself by a kinase activated downstream of a second messenger. The phosphorylated receptor likely:
TLS Online TPP Program

#Question id: 3773

#Unit 3. Fundamental Processes

DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed during DNA replication?
TLS Online TPP Program

#Question id: 8840

#Unit 9. Diversity of Life Forms

There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to
TLS Online TPP Program

#Question id: 4255

#Unit 3. Fundamental Processes

How might a single base substitution in the sequence of a gene affect the amino acid sequence of a protein encoded by the gene?