TLS Online TPP Program

#Question id: 10983


If the S-A node discharges at 0.00 seconds, when will the action potential normally arrive at the AV bundle (bundle of His)?

#I Life Science/ Life Sciences Group – I-V
  1. 0.22 sec
  2. 0.18 sec
  3. 0.16 sec
  4. 0.12 sec
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TLS Online TPP Program

#Question id: 796

#SCPH05 I Biotechnology

Which statement best describes the distinction between the purposes of the two RNAi pathways within the eukaryotic cell?

TLS Online TPP Program

#Question id: 10798

#SCPH05 I Biotechnology

Two other major groups of flavonoids found in flowers and leaves of all green plants. The function of these two flavonoids in plants are____

a) protect plants against being eaten by herbivores and against being infected by microbial pathogens

b) Protect cells from excessive UV-B radiation (280–320 nm) because they accumulate in the epidermal layers of leaves and stems and absorb light strongly in the UV-B region       

c) flavones and flavonols secreted into the soil by legume roots mediate the interaction of legumes and nitrogen-fixing symbionts

d) They are are coloured terpenoid compounds that also serve as accessory pigments in photosynthesis    

Which of the following combination from the above statements is correct?

TLS Online TPP Program

#Question id: 8701

#SCPH28 | Zoology

The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter). The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.


Based on the tabular data, and assuming that time advances vertically, which phylogenetic tree is the most likely depiction of the evolutionary relationships among these five species?

TLS Online TPP Program

#Question id: 18381

#SCPH05 I Biotechnology

Which bacterial strain was improved by scientists to be able to degrade 2,4-dinitrotoluene and promote plant growth

TLS Online TPP Program

#Question id: 20845

#SCPH06 I Botany

What is considered as energetically the best electron acceptor under anoxic conditions?