You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

You next construct a MelA– MelB– double mutant, which gives the following behavior:

 

Which of your two models is consistent with this new data?

a) the MelA- MelB- double mutant is identical to the MelB- mutant

b) MelA- is epistatic to MelB-

c) MelB- is epistatic to MelA-

d) the MelA- MelB- double mutant is identical to the MelA- mutant

Which of the following is the correct prediction about the double mutants?

TLS Online TPP Program

#Question id: 1700

#SCPH05 I Biotechnology

Which of the following statements is TRUE of iNKT cells?

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#Question id: 5062

#SCPH28 | Zoology

Which of the signaling pathway is represent in this figure?

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#Question id: 7752

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

The autophagy pathway included____

a) the catabolic mechanism that delivers cellular components to lysosomes, where they are degraded

b) Autophagy protects the cell from the harmful or lethal effects of damaged or unnecessary proteins and organelles

c) During starvation, the autophagic breakdown and recycling of cellular components also

ensure cellular survival by maintaining cellular energy levels

Which of the following are the correct prediction about autophagy is true?

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#Question id: 6963

#SCPH06 I Botany

During early sea urchin development, which embryonic cells have similar organizer activity to that of amphibian Spemann organizer?

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#Question id: 19703

#SCPH01 Biochemistry

What is aVR in augmented unipolar limb lead?