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bacteria are a type of prokaryote that are absolutely everywhere in the world from dirt to food and even inside other
what is a relationship in which one organism benefits and the other organism is neither helped nor
what kind of relationship involves two or more organisms that benefit from living closely
the amount of time required for 50 of a radioactive isotope to decay
explain this statement the genome sequences of two species differ in proportion to the length of time that they have
in which of the following ways could signal transduction most probably be explored in research to treat cancer increase
lipid-soluble signaling molecules such as testosterone cross the membranes of all cells but affect only target cells
when protein membrane receptors are activated what usually happenswhen protein membrane receptors are activated what
what is most likely to happen to an animals target cells that lack receptors for local regulatorswhat is most likely to
what seven functional groups are most important in the chemistry of
which of the following descriptions is not an example of social learninga chimpanzees using stones to crack nutsb mate
which of the following descriptions is an example of a fixed-action patterna a crane in a captive-breeding program
the behavior that maximizes an animals energy intake-toexpenditure ratio is calleda optimal foragingb hamiltons rulec a
proximate causesa explain the evolutionary significance of a behaviorb are immediate causes of behavior such as
behavioral ecology is thea study of the behavior of animals focusing on stimulus and responseb application of human
what is a monomer composed of a five carbon sugar phosphate and either adenine thymine cytosine guanine or
what consists of sugars and sugar polymers that provide a source of energy and structural components for
a diagram that can show the relative amounts of energy biomass or number of organisms in each tropic level in an
a model representing the many intersecting food chains and pathways in which energy flows through a group of
an organism that consumes other organisms is called
a sample of potassium nitrate 49g is dissolved in 101g of water at 100 degrees c with precautions taken to avoid
an ecological footprint is an estimate ofa the carrying capacity of a nationb the number of offspring an adult produces
the human population is growing at such a fast rate becausea the age structure of many countries is highly skewed
the term k-nka is the carrying capacity for a populationb is greatest when k is very largec is zero when population
a type i survivorship curve is level at first with a rapid increase in mortality in old age this type of curve isa