What do the bacteria living in root nodules
supply to their host plant?
a. nitrogen
b. phosphorous
c. oxygen
d. sugars
e. more than one of these
A
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The antigen-binding variable region assembled by a B cell occurs in both its antibody molecule and its (BCR/CD8/MHCII) molecule.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not an autoimmune disease?
A. multiple sclerosis B. type I diabetes C. myasthenia gravis D. HIV E. All of these conditions are autoimmune diseases.
What kind of fruit is formed from the fusion of individually pollinated flowers?
A. Aggregate B. Simple C. Multiple D. Fleshy E. Dry
Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line. In which section of the root would you begin your search?
A. root cap B. zone of cell division C. It doesn't matter, all zones have the same level of mitotic activity. D. zone of maturation E. zone of elongation