Halobacterium has a photosynthetic membrane that appears purple. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants
(That is, the Halobacterium action spectrum has a peak where the green plant action spectrum has a trough.) What wavelengths of light do the Halobacterium photosynthetic pigments absorb? A) red and yellow
B) blue, green, and red
C) green and yellow
D) blue and red
C
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The theory that evolution occurred slowly and that changes accumulate over long time periods is
A. gradualism. B. punctuated equilibrium. C. convergent evolution. D. divergent evolution.
Water molecules can "stick" to certain surfaces by
A. cohesion. B. pneumatophores. C. adhesion. D. water pressure. E. root pressure.
Heat is used in DNA sequencing to ________ the double strands of the molecule.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is/are accurate about the role of genome analysis in crop improvement? Check all that apply.A) Conservation of synteny will hinder our ability to find agriculturally important genes in plants.B) Arabidopsis is being genetically modified as a crop plant.C) Sequencing of the rice genome was important because it is related to many other cereal crop plants.D) The genes in one crop plant type can help to identify useful genes in another crop.
What will be an ideal response?