Which of the following is true about the synthesis of macromolecules from monomeric subunits?
A. It saves energy
B. It saves genetic storage capacity
C. It saves biosynthetic raw materials
D. All of the choices are correct.
Answer: D
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A muscle contraction always involves a decrease in the length of the muscle fiber
A. true B. false
Sustained contraction is called
A. twitching. B. summation. C. recruitment. D. isometric binding. E. tetanus.
Mycorrhizae are the mutualistic relationship between fungi and the roots of certain plants.
Answer the following statement true (T) or false (F)
In the United States, purple loosestrife, Japanese and Amur honeysuckle, Australian Melaleuca, and Brazilian pepper are all:
A) native flowering plants nearly brought to extinction by consumption by exotic insects. B) native flowering plants nearly brought to extinction by competition from exotic plants. C) exotic flowering plants that have caused relatively few problems for native species. D) exotic flowering plants that have caused significant problems for native species.