The unit structure of chromatin is the ____________________, which is made up of
____________________ types of ____________________ proteins complexed with DNA. Fill in the blank(s) with the appropriate word(s).
ANS: nucleosome; five; histone
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Despite the enormous amount of solar energy that plants are exposed to, photosynthesis is only able to transform about 1-2% of that energy into stored chemical energy
List three major factors responsible for this phenomenon and explain how each contributes to this inefficiency. What will be an ideal response?
Which would be more likely to cause illness-a water sample that tested positive for coliforms or one that tested positive for E. coli O157:H7?
A. Both would be equally capable of causing illness-all coliforms cause illness. B. The coliform positive sample would be more likely to cause illness. Coliforms are inherently more pathogenic than the weak O157:H7 lab strain of E. coli. C. The E. coli O157:H7 sample would be more likely to cause illness. This strain of bacterium is highly pathogenic and capable of causing kidney damage. D. Neither-there is usually a small amount of coliforms (including E. coli O157:H7) in all water.
Research by Malte Andersson suggests the long tail feathers of male African widowbirds are a product of ____
selection because females are more strongly attracted to males with long tails than to males with short tails.
a. disruptive b. intersexual c. intrasexual d. artificial e. stabilizing
Type I hypersensitivity reactions are also commonly known as (allergies/autoimmunities/inflammation)
What will be an ideal response?