BIO 189 exam 1 Questions and Answers
(Chapters 1-4 Doctor Rafferty)
basic unit of life? - -cell
-what is the informational molecule of life? - -DNA
-what enables cells to carry out their functions in tissues and organs? - -proteins
-5 characteristics of life - --organization
-energy use
-maintenance of internal constancy
-reproduction, growth, and development
-evolution
-population - -includes members of the same species living at the same place at the same
time
-community - -All the different populations that live together in an area
-ecosystem - -both living and non living components of an area
-emergent properties - -quality that results from interactions of a system's components
-primary producers (autotrophs) - -organisms that make their own food by extracting
energy and nutrients from non living sources (sun)
-Consumers (heterotrophs) - -obtain energy and nutrients by beating other organisms
-homeostasis - -process by which organisms maintain a relatively stable internal
environment
-asexual reproduction - -genetic info comes from only one parent and all off-spring are
virtually identical.
-sexual reproduction - -genetic material from 2 parents unites to form an off-spring
-Adaptation - -inherited characteristic or behavior that enables an organism to survive
and reproduce successfully
-natural selection - -the enhanced reproductive success of certain individuals from a
population based on inherited characteristics
(Chapters 1-4 Doctor Rafferty)
basic unit of life? - -cell
-what is the informational molecule of life? - -DNA
-what enables cells to carry out their functions in tissues and organs? - -proteins
-5 characteristics of life - --organization
-energy use
-maintenance of internal constancy
-reproduction, growth, and development
-evolution
-population - -includes members of the same species living at the same place at the same
time
-community - -All the different populations that live together in an area
-ecosystem - -both living and non living components of an area
-emergent properties - -quality that results from interactions of a system's components
-primary producers (autotrophs) - -organisms that make their own food by extracting
energy and nutrients from non living sources (sun)
-Consumers (heterotrophs) - -obtain energy and nutrients by beating other organisms
-homeostasis - -process by which organisms maintain a relatively stable internal
environment
-asexual reproduction - -genetic info comes from only one parent and all off-spring are
virtually identical.
-sexual reproduction - -genetic material from 2 parents unites to form an off-spring
-Adaptation - -inherited characteristic or behavior that enables an organism to survive
and reproduce successfully
-natural selection - -the enhanced reproductive success of certain individuals from a
population based on inherited characteristics
