BSC 1010 Exam one
What is a community
All the populations of different species that live in an area
What is deoxyribonucleic acid (DNA)?
Molecule that encodes genetic instructions
autotroph that obtains energy and nutrients from nonliving sources
Producer
Flowers shaped for their pollinators, specific camouflaged color patterns of animals, and a beaver's enormous front teeth for gnawing are all examples of
adaptations
select two scientists that independently developed the idea of natural selection.
alfred russel wallace charles darwin
particles that make up molecules are called
atoms
examples of characteristics in organisms that make them well-suited to their environments
beavers have larger front teeth that are excellent at gnawing wood. an insect is shaped like the leaf of the tree it lives on. the long beaks of hummingbird pollinators match the shape of tubular flowers.
a level of biological organization called the _________ includes all parts of Earth and its atmosphere where life can survive.
biosphere
a living thing, or organism, exhibits certain properties of life and is composed of one or more _________, the basic unit of life
cells
heterotroph that obtains energy and nutrients by eating other organisms
consumer
heterotroph that obtains energy and nutrients from wastes and dead organisms
decomposer
What biological level includes the living and nonliving components of a particular area?
ecosystem
New complex functions and characteristics that arise when the smaller components of an organism interact are called ____ properties.
emergent
What is true of asexual reproduction?
genetic information comes from only one parent offspring are virtually identical to each other
what describes the state of internal constancy maintained by an organism?
homeostasis
What is a group of joined atoms, such as deoxyribonucleic acid (DNA)?
molecule
What is a structure of tissues organized to interact and carry out specific-functions?
organ
What are membrane-bounded compartments within eukaryotic cells that carry out specialized functions?
organelles
consider a species of frog that lives in many ponds throughout central california. A group of the frogs in one of the ponds, NOT including the other species of organisms living there, is an example of a(n)
population
Natural ____________ is a mechanism of evolution in which certain individuals from a population exhibit enhanced reproductive success based on inherited characteristics.
selection
In ________ reproduction, offspring are produced that contain a combination of genetic material from two parents.
sexual
an organ ______ is composed of several organs that are connected and working together
system
describe a cell
the smallest unit that can be called life