Plants that grow in saline environments, called

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#Question id: 3854

#Unit 3. Fundamental Processes

In prokaryotes, the presence of a protein called rho will:

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#Question id: 28681

#Unit 2. Cellular Organization

CENP-A is a variant of which one of the following histones?

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#Question id: 23853

#Unit 13. Methods in Biology

The segment of DNA shown in Figure, has restriction sites I and II, which create restriction fragments A, B, and C. Which of the gels produced by electrophoresis shown below best represents the separation and identity of these fragments? 

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#Question id: 12364

#Unit 10. Ecological Principles

Which of the following populations is capable of increasing more rapidly than the others?

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#Question id: 59

#Unit 1. Molecules and their Interaction Relevant to Biology

Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?