Which of the following is a genetically modified organism?
A) an organism carrying a gene that was acquired by artificial means
B) the first organism in which a particular mutation has appeared
C) a cloned organism carrying two different alleles
D) an organism that gestated in an artificial womb
A
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Which antibodies bind complement?
A) IgA B) IgB C) IgM D) IgC
In the brain and spinal cord, gray matter is composed of
a. nerve cell bodies. b. axons. c. dendrites d. ependymal cells. e. oligodendrocytes.
About 80% of all land plants, including grasses, shrubs, and trees, form mycorrhizae. Mycorrhizae are best described as
A. parasitic associations between fungi and plant leaves. B. balanced competitive associations between plants and fungi. C. mutualistic associations between fungi and plant roots. D. parasitic associations between fungi and plant roots. E. mutualistic associations between fungi and plant leaves.
Chlorophyll absorbs primarily __________ and __________ regions of the visible spectrum
a. blue; red b. green; yellow c. red; green d. red; yellow e. blue; yellow