Actively transcribed regions of eukaryotic chromatin have a diameter of approximately:
A. 10 microns
B. 2 nanometers
C. 30 nanometers
D. 1400 nanometers
E. 10 nanometers
Answer E
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Photorespiration results in (select all correct choices):
A. the consumption of ATP. B. the loss of CO2. C. the inactivation of rubisco. D. the consumption of ATP and the loss of CO2.
Structures known as microvilli are associated with:
A. communication between cells. B. increased surface area for gas exchange. C. adhesion to the extracellular matrix. D. increased surface area for nutrient absorption.
Mycorrhizal fungi obtain food from plants in exchange for water and nutrients. This is an example of
A. mutualism. B. commensalism. C. herbivory. D. parasitism. E. predation.
You have just moved from Norfolk, Virginia (sea level), to Taos, New Mexico (high in the
mountains), and you find yourself out of breath climbing a small hill. Three months later, climbing the same hill, you have no difficulty. In the interim you have not altered your level of activity or diet. Which hormone has been at work? a. angiotensin b. erythropoietin c. aldosterone d. estrogen e. anti-diuretic hormone