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16 Cards in this Set
- Front
- Back
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a scientist examines an organism and finds that it is eukaryotic, hetertrophic,and multicellular and that it absorbs nutrients. She concludes that the organism is a member of what kingdom?
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fungi
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polar covalent bonds form when?
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electrons are shared unequally between atoms
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the three natural processes that form the basis of evolution are?
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genetic variation, inheritance, and natural selection
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science assumes that natural laws(such as the laws of gravity)...
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apply uniformly through space and time
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what allows one atom to physically interact with another atom?
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propteries of electrons
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nonpolar covalent bonds are different from polar covalent bonds because...
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electrons are shared equally in nonpolar covalent bonds and are shared unequally in polar covalent bonds
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natural selection is best measured by?
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reproductive success
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what is the defining characteristic of an acid?
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it donates hydrogen ions
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which of the following groups of organisms contain prokaryotic cells?
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bacteria and archaea
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sodium, Na, atomic number 11, has a tendency to lose an electron in the presence of chlorine. After losing the electron Na will have --- protons in its nuclues?
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11
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organisms that can extract energy from light are called ---; organisms that can obtain energy from molecules made by other organisms are called--
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autoroph, heteroph
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the atomic number of carbon is 6. A carbon number has --protons and --electrons.
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6,6
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a solution of pH 7 has-- times--H+ ions than a solution of pH 9.
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100, times
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when an atom ionizes what happens?
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it gives up or takes up one or more electrons
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You discover a new type of organism in the back of your fridge. Luckily, your roommate is a biology major and takes you to the lab where he works. You put a small piece of the fuzzy critter under the microscope and see that it is made of very simple, single cells with no nucleus. What type of organism might this be?
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bacteria
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a covalent bond forms----
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when two atoms share electrons
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