List several configurations that characterize different viral chromosomes
What will be an ideal response?
DNA (single- and double-stranded), RNA (single- and double-stranded), linear, circular
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Different body cells can respond differently to the same peptide hormones because _____
A) different target cells have different sets of genes B) each cell converts that hormone to a different metabolite C) a target cell's response is determined by the components of its signal transduction pathways D) the circulatory system regulates responses to hormones by routing the hormones to specific targets E) the hormone is chemically altered in different ways as it travels through the circulatory system
Which one of the following sequences is CORRECT in terms of level of organization from least to most complex?
A) cells, tissues, organs, organ systems, organism B) atoms, cells, organs, community, population C) atoms, cells, organism, organ systems, ecosystem D) tissues, organ systems, population, cells, organism
Which of the following sequences correctly represents the phytochrome signal transduction pathway?
a. red light ? PIF3 activation ? PIF3 into nucleus ? light-responsive gene switched off b. red light ? Pfr to Pr ? Pr into nucleus ? Pr-PIF3 complex ? light-responsive gene regulation c. UV light ? PIF3 into nucleus ? light responsive gene produces phytochrome ? Pr to Pfr d. blue light ? Pfr into nucleus ? Pfr-PIF3 complex ? light-responsive gene regulation e. red light ? Pr to Pfr ? Pfr into nucleus ? Pfr-PIF3 complex ? light-responsive gene regulation
In ________ the cotyledon remains underground as a seedling grows.
A. corn B. onions C. garden beans D. peas