chapter 1 study guide Flashcards
what is the definition of structure?
how something is made
what is the word for the purpose of an object?
function
what makes up the structure of something?
materials and shape
change in structure = change in what?
function
what is the difference in cows teeth vs our based on structure?
cows have more molers than humans and no teeth on top
what does PMC stand for?
program, metabolism, container
DNA is a part of what part of the PMC model?
program
what is the purpose of metabolism?
getting and using energy
what does container mean?
taking up a defined space
how does structure determine function?
the materials and shape of something tells you how it will work
explain the deference in living and non living things
living things have the whole PMC model and non living things will have one or two
energy processing is a what part of the PMC model?
metabolism
what is the smallest level of organization?
atom
what is the biggest level of organization?
biosphere
is population made of one species or multiple?
one
how many atoms are in a molecule?
two or more
what is the difference of community and ecosystem?
ecosystems have non living things in them
what is the difference between biome and biosphere?
biosphere is bigger and contains the whole planet?
what are the different base prefixes in order?
giga, mega, kilo, hecto,centi, milli, micro, nano
how many cm are in a meter?
100
whats the difference between mass and volume?
mass is how much matter something has and volume is how much space it takes up
what is median?
the middle number of a given set
what prefix goes with the symbol c?
centi
what is the dependent variable?
the variable being measured
what is the independent variable?
the variable being changed
what is the difference between control and experimental groups?
they are identical except the independent variable is being changed in an experimental group
what axis would the independent variable go on?
x axis
what makes a good hypothesis?
1) specific
2) testable
3) explanatory
4) can use it to make predictions
why would you need to do an experiment multiple times?
to make sure the result is more accurate
