Choose correct combination of statements 

A. Each chromosome contains many fragments of very long duplex of DNA, folded into a fiber that runs continuously throughout the chromosome.

B. During interphase, euchromatin, which is slightly densely packed than mitotic chromosomes. 

C. Regions of heterochromatin remain densely packed throughout interphase.

D. Various heterochromatic regions, especially those associated with centromeres, aggregate into a densely staining chromocenter

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#Question id: 12148

#Unit 10. Ecological Principles

If asked to find the cause of regular fluctuations in a population's size not associated with seasonal environmental variation, you would probably first seek evidence for: 

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#Question id: 583

#Unit 1. Molecules and their Interaction Relevant to Biology

When there are two substrates in a reaction, the reaction is said to be second order if ________.

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#Question id: 9572

#Unit 10. Ecological Principles

The gills of fish maintain effective oxygen uptake from water and the legs of seagulls reduce the loss of heat to the external environment by the same circulatory mechanism known as __________.

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#Question id: 31169

#Unit 7. System Physiology – Animal

The basis for the relative refractory period is the: 

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#Question id: 1292

#Unit 4. Cell Communication and Cell Signaling

Heparan sulfate, an example of a(n) _____________, aids in the activation of ____________.