Exam 1 Study Guide
1) What is biology?
the scientific study of life
2) Which of the following is not a property of life?
A) Populations of organisms are unable to change over time. B) Living things exhibit complex but ordered organization.
C) Organisms respond to environmental stimuli.
D) Organisms take in energy and use it to perform all of life's activities. E) Organisms reproduce their own kind.
3) What are the two main processes that ecosystems depend upon? nutrient cycling and energy flow
4) Which of the following structures can perform all the activities required for life? cells
5) Relative to prokaryotic cells, eukaryotic cells are usually ______. larger and more complex
6) Which domain(s) consist(s) of prokaryotic cells?
Bacteria and Archaea
7) Which of these is most closely associated with Darwin?
8) What accounts for the different breeds of domesticated dogs? artificial selection
9) What is the difference between discovery science and hypothesis-driven science? Discovery science is mostly about describing nature, whereas hypothesis-driven science tries to explain nature.
10) A hypothesis is a(n) ______.
11) How do hypotheses differ from theories?
Theories are more comprehensive than hypotheses.
12) ______ is an example of an element.
13) An atom with a positive charge has ______.
more protons than electrons
14) All atoms of an element have the same number of ______. protons
15) Isotopes of an element have the same number of ______ and different numbers of ______. protons . . . neutrons
16) Nitrogen has an atomic number of 7; therefore, it has ______ electrons in its outermost electron shell. 5
17) The bond between oppositely charged ions is a(n) ______ bond. ionic
18) The hydrogens and oxygen of a water molecule are held together by ______ bonds. covalent
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