chapter 1
which lvl of organization is composed of several tissues
organ
what is the atomic mass of an element determined by
the # of protons & neitrons it contains
imprinting is of benefit to organisms because it allows them to
recognize a member of their own species
ecology is defined as
the study of organism interaction with oher organisms and their surroundings
in biosphere what is constantly recycled
carbon, nitrogen, water
biological organization from smalest & simplest to largest & most complex
cells, tissues, organs, organ system, organizm
water is a liquid at room temperature, this is due to
hydrogen bonding between water molecules
result of experiments with two groups of california garter snakes variety in habitat and food
behavior was genetic, coastal garter snakes were born interested in slugs
a population expanding at the rate of 2, 4, 8, 16, 32, 64...., is in
exponential growth
ecologists have discovered that
energy flows one way through an ecosystem & required an external output
organs are composed of tissues, which are composed of cells. which characteristics of life is this??
living things have lvls of hierarchical organization
isotopes of given elements have
same protons but differ in atomic mass
natural selection might favor altruistic behaviors in closely related individuals bc
it increases the frequency of the altruistic individuals genes in the next generation
max pop. that the environment can support fro an indefinite period of time is called...
pop size levels off at this amount
the carrying capacity
energy flow in an ecosystem is NOT CYCLIC bc energy is
useless once its converted to heat
when researchers test a new human cancer drug using mice. mice constitute the...
model
a covalent bond
a sharing electrons between 2 atoms
a nephew has a genetic relatedness of __ to an uncle
1st cousins have genetic relatedness of ___
1/4
1/8
in a species with a type 3 survivorship curve
type 1?
many individuals die early in life
old age death
the first step in the use of carbon by living organisms occurs in
green plants
plant seedlings bend toward a window. which characteristic of life is this?
response to stimulus
the lower the pH means
the more acidic the solution
mating strategy in which a female mates w/ multiple males is
polyandry
highest death rate
highest birth rate
lowest birth rate
lowest death rate
A
A
C
C
ecological pyramids show the relative
biomass at each level