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ugh
68
Science
7th Grade
12/13/2009

Additional Science Flashcards

 


 

Cards

Term
name the 5 steps of the scientific method in order
Definition

state the problem clearly

research and form a hypothesis 

experiment the hypothesis

observe oberstions

draw a conclusion

Term
how do a food chain and a food web differ
Definition
food chain=the flow of energy
food web=the bunch of food chains
Term
what is the difference between a hypothesis a theory and a law
Definition

hypothesis=a educated quess 

theory =hypothesis being tested many times

law=a absolute

Term

what is a controlled experiment

 

Definition
one factor and one veriable
Term
what is a limiting factor
Definition
it is a factor that limits how many organism can live in a ecosystem
Term
what is a varable
Definition
is a changing of a  factor of the experiment
Term
what does each of the following measure liter meter gram
Definition

meter= length and distance

liter= volume

gram=mass

Term
what does each prefix mean milli centi and kilo
Definition

milli 1-100 th

centi 1-100 th

kilo 1000

Term
on the celsius scale what is the boiling point of water
Definition

boiling=100

cold=0

Term
on the farenheit scale what is the boling point and the freezing point
Definition

boiling=212

freezing=32

Term
what are the five different relationships organisms may have
Definition
sybosis
competition
prey predor
parsittium
covelution
Term

how many grams of water are in one ml one mc3

 

Definition
1
Term
name the 8 charaistics of all living things
Definition

contain cells

grow and develop

contain dna

strive for homostais 

respond to envirornment

have a source of energy 

reproduce 

have a life span

Term
what are the 3 categories
Definition

carbahydrates

proteins 

fats

Term
what is an amino acid
Definition
protein
Term
what is homeostasis
Definition
is the maintanence of a constant balance of the changing of the envirornment
Term

what is the difference between sexual and asexual reproduction

 

Definition

sexal=2 parents and has to have a egg and sperm

asexual=1 parent and no egg and sperm

Term
name the 4 things all living things need to survive
Definition

suitable place to live

water food

rite temperature

Term
what is the difference between biotic and abiotic factors
Definition

biotic=plants

abiotic=nonliving factors

Term
what is a group of organisms of the same species called.. all the organisms in an area..all biotic and abiotic factors..the area of the earth where life exsist
Definition

population

community

ecosystem

biospehere

Term
how do an omivore a herborvore and a carivore
Definition
omivore=plants and animals
herbivore=plants
carnivore=animals
Term
what does ecological sucession
Definition
the gradual development of the ecosystem
Term
how do a marsh and swamp differ
Definition
marsh=scrubs
swamps=trees
Term
what is a wetland
Definition
something that floods seasonly
Term
what is estuary
Definition
is freshwater and salt water make brackish water
Term
what is the opposite of deciduous
Definition
ever green
Term
why is biodiversity
Definition
the increase of the size of the food web
Term
what is a natural resource that replaces itself one that doesnt
Definition
sunlight
coal
Term
what does it mean to recover valuable material from waste
Definition
recycle
Term
what is an exotic species
Definition
is not a native but is thriving
Term
what are the three rs
Definition
reuse recycle reduce
Term
name 5 pollutants
Definition
noise
garbage
gas
chemicals
waste
Term
state the three parts of cell theory
Definition
all cells are made up of other cells
all cells are exsisting cells
all cells are basic unit of life
Term
what are the 5 levels of organization of all living things
Definition
cell
tissue
organ
organ system
organism
Term
what are osmosis and diffusion
Definition
osmosis=its teh diffusion of water
diffusion=is high to low pressure
Term
what is interphase
Definition
whan a cell carries on a normal job
Term
how are genotype and phenotype and why different
Definition
genotype=the exual traits
phenoype=some of the charaistics
Term
what is a gene
Definition
is instructions for a trait
Term
who is considered the father of genetics
Definition
gregor mendal
Term
who is considered the father of genetics
Definition
gregor mendal
Term
who is considered the father of genetics
Definition
gregor mendal
Term
what is a gene
Definition
is instructions for a trait
Term
what plant did he study very intensely
Definition
pea plant
Term
how are dominant and recessive traits differnt
Definition
dominant=over powers and leaves
recessive=keeps coming back
Term
what is it called when both traits show up in a off spring
Definition
incomplete dominant
Term
what do homozygous and heterozygous mean
Definition
homozygous=is 2 leaves are the same
heterozygous=2 leaves that are different
Term
what is meiosis
Definition
is a process in the cell division
during the decreases of number of chromsomes
which is half of the orignal number
in result is production of sex cells
Term
who are the two scientist crediited with making the 1st model of DNA
Definition
cridic and watson
Term
what does DNA look like
Definition
a twisted ladder
Term
what does DNA stand for
Definition
deoxynecleic acid
Term
what does DNA stand for
Definition
deoxynecleic acid
Term
what is a nuleotide
Definition
in a nucleic acid chain
a subunit that consist of sugar a phosphate and nitrogen base
Term
what is genetic engineering
Definition
the changing that make up the organism
Term
what is a species
Definition
a group of organisms that are closely related
can mate to produce fertile offspring
Term
what is taxonomy
Definition
the classifying of organsims
Term
name the 8 levels of classification of all living things
Definition
domain
kingdom
phylum
class
order
gensuis
family
species
uh
Term
what is a scientific name
Definition
Gensus Species
Term
how do you use a dichotomous key
Definition
is a question that answers wat kind of organism it is
Term
name and describe the four kingdoms
Definition
protist
singular multicellular cell
plant like
or animal like
przoans
fungi
mostly mullticellualr cell
cell walls
no chlorplasts
plant
all multicellular
cellwalls
chlorplast
animal
all multicellular
no cell walls \no chlorplast
Term
what are the two parts of a virus
Definition
proteins and nucleic acid
Term
what does aids stand for
Definition
a far amune system
Term
how do viruses reproduce
Definition
when a virus attaches to a host and injects it into teh cell and keeps it going until the host can attack other cells
Term
what are teh three shapes of bacteria
Definition
bocci rod
cocci round
sprillia spiral
Term
what are the three main types of archaea
Definition
heat loveers
salt lovers
mathanes
Term
name three ways bacteria are good for the envirornment
Definition
clean up waste
recycle dead material
put nitrogen in the soil
Term
how do bacteria reproduce
Definition
make medicine
make food
make insulin
Term
what is a pathogenic bacteria
Definition
that causes disease
Term
why will an antibiotic not help a cold
Definition
because they only work on bacteria and only for viruses
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