JMU BIO 150: Exam 1 || 100% VERIFIED ANSWERS!!
Define biodiversity correct answers the diversity of plant and animal life in a particular
habitat (or in the world as a whole)
Define genetic diversity correct answers the total genetic information contained within all
individuals of a species, population, or community
Why is genetic diversity important? correct answers provides the raw materials for adaptive
change
Define adaptive change correct answers change in response to the environment's "natural
selection:
Define species diversity correct answers the diversity of species present in a community
Why is species diversity important? correct answers species have a particular "role" in a
system, so the addition or loss of a species may have consequences for the entire system
How is species diversity measures? correct answers -species richness
-species abundance
Define species richness correct answers number of species in a community
Define species abundance correct answers The number of individuals of each species
Define ecosystem diversity correct answers measure of the variety of biotic components in a
region along with abiotic components
Why is ecosystem diversity important? correct answers ecosystem functioning is dependent
on interacting member organisms with their environment
Define system stability correct answers diverse systems are resilient after and resistant to
disturbances
Define ecosystem productivity correct answers diverse systems have higher net primary
productivity
Define ecosystem services correct answers direct and indirect benefits that humans derive
from organisms and ecosystems
Define existence value correct answers economic value of a system and our willingness to
mitigate biodiversity loss
What are provisioning services? correct answers raw materials (food, fuel, fiber, medicine,
genetic resources)
What are regulating services? correct answers life support system (climate moderation, soil
formation, erosion control, water capture, flood control etc.)
, Define ecosystem services correct answers all direct and indirect benefits that humans derive
from organisms and ecosystems
What are cultural services? correct answers cultural/intrinsic (aesthetics, recreation,
education, spiritual value, and physical/mental health)
What are supporting services? correct answers primary productivity, nutrient cycling,
pollination, and biological control
What are the primary threats to biodiversity? correct answers -habitat loss
-climate change
-invasive species
-overexploration
-pollution
What are characteristics of viruses? correct answers -very,very small
-not a cell
-can not reproduce independently
-does not contain ribosomes or generate ATP
What are characteristics of bacteria? correct answers -small but bigger than virus
-single cell
-reproduce independently
-contains chromosomes and generate ATP
What do beta-lactums do? correct answers break down cell wall
What do macrolides do? correct answers affect ribosomes
What does quinolines do? correct answers break down DNA and prevent repair
Define intrinsic resistance correct answers resistance naturally coded and expressed by a
bacterial species to a particular antibiotic
Define acquired resistance correct answers genetic change that leads to bacteria becoming
resistant to an antibiotic
How did Plato address evolution? correct answers evolved as distinct different groups
How did Aristotle address evolution? correct answers scale (simple -> high)
How did Lamarck address evolution? correct answers organisms change in response over
time
How did Darwin and Wallace address evolution? correct answers change through time from a
common ancestor
What did Darwin observe? correct answers different species are often similar, with slight
variations in theme
Define biodiversity correct answers the diversity of plant and animal life in a particular
habitat (or in the world as a whole)
Define genetic diversity correct answers the total genetic information contained within all
individuals of a species, population, or community
Why is genetic diversity important? correct answers provides the raw materials for adaptive
change
Define adaptive change correct answers change in response to the environment's "natural
selection:
Define species diversity correct answers the diversity of species present in a community
Why is species diversity important? correct answers species have a particular "role" in a
system, so the addition or loss of a species may have consequences for the entire system
How is species diversity measures? correct answers -species richness
-species abundance
Define species richness correct answers number of species in a community
Define species abundance correct answers The number of individuals of each species
Define ecosystem diversity correct answers measure of the variety of biotic components in a
region along with abiotic components
Why is ecosystem diversity important? correct answers ecosystem functioning is dependent
on interacting member organisms with their environment
Define system stability correct answers diverse systems are resilient after and resistant to
disturbances
Define ecosystem productivity correct answers diverse systems have higher net primary
productivity
Define ecosystem services correct answers direct and indirect benefits that humans derive
from organisms and ecosystems
Define existence value correct answers economic value of a system and our willingness to
mitigate biodiversity loss
What are provisioning services? correct answers raw materials (food, fuel, fiber, medicine,
genetic resources)
What are regulating services? correct answers life support system (climate moderation, soil
formation, erosion control, water capture, flood control etc.)
, Define ecosystem services correct answers all direct and indirect benefits that humans derive
from organisms and ecosystems
What are cultural services? correct answers cultural/intrinsic (aesthetics, recreation,
education, spiritual value, and physical/mental health)
What are supporting services? correct answers primary productivity, nutrient cycling,
pollination, and biological control
What are the primary threats to biodiversity? correct answers -habitat loss
-climate change
-invasive species
-overexploration
-pollution
What are characteristics of viruses? correct answers -very,very small
-not a cell
-can not reproduce independently
-does not contain ribosomes or generate ATP
What are characteristics of bacteria? correct answers -small but bigger than virus
-single cell
-reproduce independently
-contains chromosomes and generate ATP
What do beta-lactums do? correct answers break down cell wall
What do macrolides do? correct answers affect ribosomes
What does quinolines do? correct answers break down DNA and prevent repair
Define intrinsic resistance correct answers resistance naturally coded and expressed by a
bacterial species to a particular antibiotic
Define acquired resistance correct answers genetic change that leads to bacteria becoming
resistant to an antibiotic
How did Plato address evolution? correct answers evolved as distinct different groups
How did Aristotle address evolution? correct answers scale (simple -> high)
How did Lamarck address evolution? correct answers organisms change in response over
time
How did Darwin and Wallace address evolution? correct answers change through time from a
common ancestor
What did Darwin observe? correct answers different species are often similar, with slight
variations in theme
