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TLS Online TPP Program

#Question id: 2673

For a repressible operon to be transcribed, which of the following must be true?

#SCPH06 I Botany

  1. A corepressor must be present.

  2. RNA polymerase must bind to the promoter, and the repressor must be inactive.

  3. RNA polymerase and the active repressor must be present.

  4. RNA polymerase cannot be present, and the repressor must be inactive.

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TLS Online TPP Program

#Question id: 27202

#SCPH05 I Biotechnology

The rate constant for a first-order reaction is 4. 606 x 10-3 s-1. The time required to reduce 2.0 g of the reactant to 0.2 g will be:
TLS Online TPP Program

#Question id: 11461

#SCPH28 | Zoology

Elephants hear sounds that are too low for humans to hear. This sensitivity is primarily due to the differences in the ________.
TLS Online TPP Program

#Question id: 13052

#SCPH01 Biochemistry

What would be the effect on the PCR reaction if any of the following circumstances arose: 1) there are no primers in the reaction, 2) there are no dNTPs in the reaction, 3) there is no Taq polymerase in the reaction?
TLS Online TPP Program

#Question id: 10579

#SCPH06 I Botany

The following graph is growing population, which of the following represent growth pattern?
TLS Online TPP Program

#Question id: 7294

#SCPH01 Biochemistry

Multiple factors regulate flowering in Arabidopsis. FT mRNA is expressed in companion cells of the leaf vein in response to multiple signals, including day length, light quality, and temperature. FT moves in the phloem from leaves to the apical meristem. FT is unloaded from the phloem in the meristem and interacts with FD.

FT-FD complex activates multiple genes. Which of the following combination is correct?(SS)