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#Question id: 222


Which vitamin is shown below? 

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. vitamin C       

  2. thiamin (vitamin B1)

  3. cobalamin (vitamin B12)    

  4. folate

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TLS Online TPP Program

#Question id: 7053

#Unit 5. Developmental Biology

The ability of an embryo or larva to react to an environmental input with a change in form, state, movement, or rate of activity (i.e., phenotypic change)

TLS Online TPP Program

#Question id: 11401

#Unit 9. Diversity of Life Forms

In a hypothetical situation, a bacterium lives on the surface of a leaf, where it obtains nutrition from the leafʹs nonliving, waxy covering, while inhibiting the growth of

other microbes that are plant pathogens. If this bacterium gains access to the inside of a leaf, it causes a fatal disease in the plant. Once the plant dies, the bacterium

and its offspring decompose the plant. What is the correct sequence of ecological roles played by the bacterium in the situation described here? Use only those that

apply.

1.  nutrient recycler          2.  mutualist            3.  commensal              4.  parasite          5.  primary producer

TLS Online TPP Program

#Question id: 7099

#Unit 5. Developmental Biology

A fate map of a Xenopus blastula, just before gastrulation begins, shows that the top portion of the embryo will become ectoderm (skin and nerve), the central portion will become mesoderm (bone, muscle, and blood), and the lowest portion will become endoderm (gut). How is it that the endoderm and mesoderm, shown on the outside in the fate map, end up on the inside in the embryo after gastrulation?

TLS Online TPP Program

#Question id: 19840

#Unit 13. Methods in Biology

Match the following source of thermostable DNA polymerase with proofreading (3’−5’ exonuclease) activity;

                 DNA Polymerase

                        Sources

 

 A- Tma

 

i) Pyrococcus furiosus

 

 B- Deep VentTM

 

ii) Pyrococcus woesi

 

 C- Tli

 

iii)  Thermotoga maritima

 

 D- Pfu

 

iv) Pyrococcus sp.

 

 E- Pwo

 

v) Thermococcus litoralis

TLS Online TPP Program

#Question id: 5765

#Unit 8. Inheritance Biology

How many different trisomics could be formed in a plant with a diploid number of 12?