What is the approximate diameter of a chromatin fiber?

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#Question id: 3889

#Unit 3. Fundamental Processes

The operator region normally can be bound by:

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#Question id: 28732

#Unit 2. Cellular Organization

A proteins containing a Tyr-X-X-Φ sequence bind to Vesicles coated with_____

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#Question id: 27062

#Unit 1. Molecules and their Interaction Relevant to Biology

Determine R and S Configurations On A Fischer Projection given below 

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#Question id: 11842

#Unit 6. System Physiology – Plant

What is the function of EIN3 in ethylene signalling pathway?

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#Question id: 13206

#Unit 6. System Physiology – Plant

Given below are some of the statements that regulate the sucrose loading mechanism;

A) The solute potential or, more likely, the turgor pressure of the sieve elements

B) Sucrose concentration in the apoplast

C) The available number of symporter protein molecules

Possible observation given on how to avoid regulation;

i) increase in sieve element turgor above a certain threshold would lead to a compensatory increase in loading

ii) High sucrose concentrations in the apoplast would increase phloem loading

iii) SUT1 transporter mRNA and protein have been lower after 15 hours of darkness than after a light treatment. These data suggest that the concentration of SUT1 transporter molecules could regulate loading

iv) Decrease in sieve element turgor below a certain threshold would lead to a compensatory increase in loading

v) The transporter mRNA and protein high in darkness than lower in the light treatment

Which of the following combinations represents correct observation?