What benefit do legumes derive from Rhizobium?
a. help make carbon dioxide more available
b. increase root surface area
c. nitrogen fixation
d. protection
e. retain water so it is more available to the plant
C
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Which of the following is the functional unit of skeletal muscle?
a. sarcolemma b. myofilament c. sarcomere d. myofibrils
?
In the image above, the substance indicated as B is a(n) ____.
A. inhibitor B. regulatory molecule C. substrate D. coenzyme E. cofactor
The process during viral infection known as "uncoating" involves the removal of the (capsid/envelope/matrix)
What will be an ideal response?
Migration of which of the following to different parts of the embryo produces various tissues and organs?
A) the blastocoel B) morula cells C) neural crest cells D) notochord cells E) the animal pole