The electrons of an atom are
A. found in the nucleus.
B. always equal to the number of neutrons in an atom.
C. positively charged.
D. moving in pathways called orbitals.
E. used to determine atomic number.
Answer: D
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. Why does wood keep burning once it is lit?
a. Intermediates from the reaction drive the reaction forward. b. Energy is given off during the reaction that drives the reaction forward. c. The products have more energy than the reactants, therefore driving the reaction forward. d. The reactants have more energy than the products, therefore driving the reaction forward. e. The activation of the energy drives the reaction forward.
The type of cell division that produces two genetically identical daughter cells is important for all of the following functions EXCEPT ________.
A. production of sperm and eggs B. cell replacement C. growth of a multicellular organism D. asexual reproduction
The profitability of a prey item
A) increases as its handling time (Th) increases. B) decreases as its search time (Ts) decreases. C) increases as its energy content (E) decreases. D) increases as its E/Th increases.
Which one of the following is NOT considered to be one of the macronutrients needed by plants?
A. manganese B. nitrogen C. phosphorus D. sulfur E. potassium