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16 Cards in this Set

  • Front
  • Back
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?
polar covalent bonds form when?
electrons are shared unequally between atoms
the three natural processes that form the basis of evolution are?
genetic variation, inheritance, and natural selection
science assumes that natural laws(such as the laws of gravity)...
apply uniformly through space and time
what allows one atom to physically interact with another atom?
propteries of electrons
nonpolar covalent bonds are different from polar covalent bonds because...
electrons are shared equally in nonpolar covalent bonds and are shared unequally in polar covalent bonds
natural selection is best measured by?
reproductive success
what is the defining characteristic of an acid?
it donates hydrogen ions
which of the following groups of organisms contain prokaryotic cells?
bacteria and archaea
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?
organisms that can extract energy from light are called ---; organisms that can obtain energy from molecules made by other organisms are called--
autoroph, heteroph
the atomic number of carbon is 6. A carbon number has --protons and --electrons.
a solution of pH 7 has-- times--H+ ions than a solution of pH 9.
100, times
when an atom ionizes what happens?
it gives up or takes up one or more electrons
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?
a covalent bond forms----
when two atoms share electrons