Chapter 1 Study Guide

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YDMS, Life Science 7th grade, Chapter 1,

Scientific method

step 1: form a question, step 2:find information on your topic, step 3: form hypothesis, step 4: perform experiment, step 5: record your data, step 6: analyze data, step 7: state conclusion

varible

factor that is being tested in an experiment

hypothesis

a prediction that can be tested

control

the standard used to compare the outcome of a test

theory

an explanation of things or events based on many observations

scientific law

a rule that tells how nature works

scientific method

organized problem solving steps in science

experiment

scientist perform to test a hypothesis under controlled conditions

reproduce

process than an organism uses to make more of itself

homeostasis

how living things keep the proper conditions inside theselves

characteristics of living things

1:all living, 2:organized, 3:all respond, 4:use energy, 5: grow and develop, 6:reproduce, 7: life span

cell

smallest unit of organism that carries on the function of life

life span

the length of time an organism is expected to live

example of homeostasis

your body maintaining a temperature of 37*C

living things need to survive

fats, water, sugars and the sun

example of living thing "grow and develop"

baby laughing at 4 months

example of living thing "respond"

when you touch a hot pan on the stove with your hand, you quickly move your hand away

a many-celled organism grows by increasing

the number of cells

a one-celled organism grows by increasing

the size of the cell

the reaction of an organism to a stimulus

response

raw materials all living things need

habitat, water, air, sun(energy)

example of stimulus

when a bright light shines in your eyes, you close your eyelids quickly

organism

what any living thing is called

cells

living thing are composed of one or more

sun

main source of energyused by most organisms

stimulus

anything an organism reacts to

genus

the first word of a two word naming system identifies

species

the secong word of the two word naming system

Linnaeus

The person who developed the classification system( binomial nomenclature) over 2000 years ago.

scientific names

allow information to be organized and helps avoid mistakes

characteristic of species(smallest category of classification)

organisms of the same species can mate and reproduce

binomial nomenclature

the two word naming system developed by Linnaeus

classification system has how many kingdoms

6(six)

phylogeny

the evolutionary history of an organism

kingdom

the first and largest category in the classification system

an organisms name includes____ and ______

genus, species

Linnaeus system is based on _______ of organisms

types

four reasons scientific names are important

1.To avoid mistakes, 2. To show that organisms in the same genus are classified together , 3. To give descriptive information, 4. To allow information to be organized easily

example:picture growing healty plant

stimulus

example:picture growing healty plant leaning toward sun

stimulus

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