E. coli cells were spread on an agar plate, producing 1000 colonies.  The colonies are replica plated on two agar plates containing the antibiotic kanamycin and one agar plate without antibiotics.  All of the colonies are able to grow on the agar plate without antibiotic but only 4 colonies are able to grow on each of the agar plates containing kanamycin.  You notice that the four colonies that grew on each of the kanamycin containing plates are in the exact same position.  This demonstrates

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#Question id: 28989

#Unit 7. System Physiology – Animal

Which of the following is the major mechanism to terminate the actions of norepinephrine?

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#Question id: 24212

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement

a. Hexokinases IV remains sequesters in the nucleus in case of high F-6-P and high ATP

b. Hexokinases IV remains sequesters in the cytoplasm in case of high F-6-P and high ATP

c. Hexokinase requires Mg+2 for its activity, because the true substrate of the enzyme is not ATP4- but the MgATP2- complex.

d. Hexokinase requires Mg+2 for its activity, because the true substrate of the enzyme is MgATP4- but not the MgATP2- complex.

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#Question id: 11935

#Unit 7. System Physiology – Animal

Which of the following systems conveys information concerning highly localized touch sensation and body position (proprioceptive) sensation?

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#Question id: 19237

#Unit 12. Applied Biology

A type of structure, which may act as a transcription termination signal is

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#Question id: 26354

#Unit 2. Cellular Organization

Presence of introns leads to which phenomenon