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TLS Online TPP Program

#Question id: 20979

Which of the following biosensors use the movement of electrons produced during redox reactions?

#Unit 12. Applied Biology
  1. Amperometric biosensor
  2. Potentiometric biosensors
  3. Piezo-electric biosensors
  4. Optical biosensors
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TLS Online TPP Program

#Question id: 15817

#Unit 8. Inheritance Biology

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium

Based on these experiments, what is the minimum number of genes required for threonine synthesis?
TLS Online TPP Program

#Question id: 28512

#Unit 5. Developmental Biology

Fgf10 is function as positive feedback factor in different ways such as___
a) to maintain the activation of both Wnt2b and Tbx5
b) to tells the surface ectoderm to continue to make Fgf8, and the surface ectoderm continues to tell the underlying mesoderm to make Fgf10
c) to maintain the activation of both Wnt3a and Tbx4
d) to tell the mesenchyme cells directly beneath it to continue making Fgf10
TLS Online TPP Program

#Question id: 3513

#Unit 8. Inheritance Biology

RR- red, Rr- pink, rr- white flower color in plant. Pink flower plant allowed to repeated self fertilization up 3 generation. The proportional of pink flower is 
TLS Online TPP Program

#Question id: 27002

#Unit 10. Ecological Principles

Most individual die at later in their life showing which type of survivorship curve___
TLS Online TPP Program

#Question id: 1988

#Unit 4. Cell Communication and Cell Signaling

What are CD4 and CD8?