The term "activation energy" refers to the amount of energy
A. released by an exergonic reaction.
B. released by an endergonic reaction.
C. released by a catabolic reaction.
D. required to initiate any chemical reaction.
E. required to initiate only catabolic reactions.
D
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Fingernails and toenails start to form in the ______ week of development
A. 2nd B. 3rd C. 5th D. 10th E. 16th
The endosteum is best described as
A) an incomplete epithelium that sometimes leaves matrix exposed. B) the cellular lining of the marrow cavity and central canals. C) a tissue that is active during the growth or repair of bone. D) an epithelial layer that covers the trabeculae of spongy bone. E) All of the answers are correct.
Which of the following usually accounts for the smallest percentage of leukocytes in a
blood sample? A) Eosinophils B) Basophils C) Monocytes D) Neutrophils
What produces thrombopoietin?
A. Kidney B. Lymphocytes C. Bone marrow D. Erythrocyte