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TLS Online TPP Program

#Question id: 2664

Which of the following is an example of positive gene regulation?

#SCPH06 I Botany

  1. the tryptophan operon

  2. the lactose operon using the repressor

  3. the lactose operon using CRP-cAMP

  4. the histidine operon

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TLS Online TPP Program

#Question id: 14114

#SCPH01 Biochemistry

‘A laboratory, where drugs, chemicals, and other types of biological matter can be analysed and tested by using various liquids’ is called 
TLS Online TPP Program

#Question id: 7696

#SCPH28 | Zoology

The following question refers to the following phylogenetic trees. Which tree depicts the microsporidians as a sister group of the ascomycetes?
TLS Online TPP Program

#Question id: 19695

#SCPH06 I Botany

Which of the following leads are used to record ECG by using two active electrodes?
TLS Online TPP Program

#Question id: 7764

#SCPH28 | Zoology

Cellular senescence may have evolved to protect organisms against cancer. Instead of dividing out of control, the cells die. Cellular senescence appears to be regulated by several tumor suppressor genes, especially p53.what is the most appropriate reason behind this,

1) Transcription factor p53 is thought to suppress tumorigenesis by causing cell arrest and senescence in response to short telomeres, DNA damage, and viral or external signals to divide

2) This factor can stop the cell cycle, cause cellular senescence in rapidly dividing cells, instruct genes to initiate cellular apoptosis, and activate DNA repair enzymes.

3) Induction of apoptosis or cellular senescence by p53 always beneficial.
TLS Online TPP Program

#Question id: 1619

#I Life Science/ Life Sciences Group – I-V

Which of the following statements is TRUE of interferons?