Problem Set #1
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How many neutrons does a carbon-13 atom have?
7
What distinguishes a hypothesis from a theory?
A hypothesis has a narrow scope; a theory has broad explanatory power
What provides evidence for the common ancestry of all life?
DNA
When two atoms are equally _______ they can form a __________
Electronegative, Nonpolar covalent bond
Ethylene is a molecule with the formula C2H4. How many electrons are involved in the interaction between the two carbon atoms?
Four
Which sequence represents the hierarchy of biological organization from the least to the most complex?
Molecule, cell, organ, population, ecosystem, biosphere
Which of the following is not a molecule: O, O2, H2O, C6H12O6, or none of these?
O