Practice Test 1 Flashcards
Which of the following would be a characteristic of life?
a)Acquires energy
Water has a high heat of vaporization largely because
c) Hydrogen bonds form between the hydrogen atoms of one water molecule and the oxygen atoms of other water molecules
What is a hypothesis?
a) a testable question
The middle electron shell of an atom that has three full shells contains__electrons
b) 8
What is the basic difference between covalent and ionic bonds?
b) In covalent bonding, the partners share a pair(s) of electrons; in an ionic bond, one partner captures an electron from the other
The most basic independent unit of life is the
b) Cell
The bonds that are broken when water vaporized are
c) Hydrogen bonds between water molecules
Why does ice float on water?
c) Hydrogen bonds keep the molecules of ice farther apart than in liquid water
Sugars dissolve in water. This property is called
b) Hydrophilia
The level of organization that includes cells of similar structure and function would be a(n)
b) Tissue
After formulating a hypothesis, a scientist
b) Tests the hypothesis
The Gaia hypothesis states that
d) The earth is one huge ecosystem and environmental problems should be addressed with this in mind
According to the 2nd Law of Thermodynamics, energy transformations usually lose energy in what form?
a) Heat
Bioformatics is
a) The use of software that extracts information from high-throughput technology
“Life on this planet is mostly made up of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. Therefore, when looking for life on other planets, we should search for these same molecules.” This is an example of
a) a hasty generalization
b) an inductively valid argument
c) a conclusion based on biased statistics
* *d) all of the above
“Geneology replaces cosmogeny” is the description of whose contribution to philosophy?
b) Hesiod
What is “aer”?
a) A mist that changes properties corresponding to density
An artist’s paining of a vase is a poor and imperfect reflection of another poor and imperfect reflection. This is an example of whose philosophy?
b) plato
In order to understand the chemicals basis of inheritance, one must understand the molecular structure of DNA. This is an example of the application of ___to the study of biology.
d) reductionism
Once labor begins in childbirth, contractions increase in intensity and frequency until delivery. The increasing labor contractions of childbirth are an example of
c) positive feedback