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TLS Online TPP Program

#Question id: 407

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:

#SCPH05 I Biotechnology

  1. at equilibrium, the concentration of B will exceed the concentration of A.

  2. at equilibrium, the concentration of C will be less than the concentration of A.

  3. at equilibrium, the concentration of C will be much greater than the concentration of A or B.

  4. C will rapidly break down to A + B.

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TLS Online TPP Program

#Question id: 2704

#SCPH05 I Biotechnology

Which of the following regions promote histone – DNA association?
TLS Online TPP Program

#Question id: 11120

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

The release of neurotransmitter at a chemical synapse in the central nervous system is dependent upon which of the following?
TLS Online TPP Program

#Question id: 10980

#SCPH06 I Botany

Sympathetic stimulation of the heart
TLS Online TPP Program

#Question id: 16490

#SCPH01 Biochemistry

Significance of producing transgenic plants are aimed at producing 
TLS Online TPP Program

#Question id: 15637

#SCPH06 I Botany

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.
     
Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.