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7th Grade Supporting Standards Vocabulary
Word
Description
Organic compound
Molecules associated with living
organism that contain Carbon
and hydrogen bonds
Digestion changes
Physical – breaks food down
into smaller pieces
(teeth chewing, stomach
churning)
Chemical – chemically changes
food (saliva in mouth, acid in
stomach)
Work = force x distance
When a force moves an object
over a distance in the same
direction as the force was
applied
Work
Natural selection
Selective breeding
Ground water
Surface water
Sustainability
The process by which organisms
with favorable traits survive
and reproduce passing those
traits on to offspring.
The choosing and mating of
organisms with specific traits to
produce offspring with the
same traits wanted.
Water beneath Earth’s surface
Water collecting on the surface
(rivers, lakes, oceans, wetlands)
To endure over time; nature
creates and maintains
conditions for us to survive
Biodiversity
Variety of life in an area
Ecological Succession
Orderly changes an ecosystem
goes through during
development or re-growth
Development of an area that
did not have organisms before
Primary Succession
Picture
No Work
Work
Ex. Over a period of time, bacteria that are resistant to
chemicals meant to kill them survive and reproduce
passing the genes for chemical resistance to their
offspring.
Ex. Choosing chickens that produce a lot of eggs to
mate with rooster’s whose mothers produced a lot of
eggs.
Secondary Succession
Re-growth of an area that has
been disturbed
Pioneer Species
First organism to live in an area
(lichens, mosses)
Dichotomous key
Tool used to identify organisms
Organelle
Structure within a cell that has
a specialized function
(little organ)
Cell
Nucleus
Basic unit of all living things
Control center of the cell;
houses the DNA
Mitochondria
Powerhouse of the cell;
provides it with energy
Vacuole
(Turgor pressure)
Storage area in cell (water)
(When vacuole is full, cell
presses on the cell wall giving
plant rigidity)
Cell wall
Cell membrane
Surrounds the cell; provides
protection & support
Controls what enters & leaves
the cell
Cytoplasm
The jelly-like fluid that fills the
cell
chloroplast
Photosynthesis occurs here
(makes food for the cell)
Photosynthesis
Food making process used by
plants converting water and
carbon dioxide into glucose.
Plants convert radiant energy
from the sun into chemical
energy (glucose)
Sexual reproduction
Requires two parents and
produces offspring that have
characteristics of both parents
Asexual reproduction
A single parent produces
offspring identical to the parent
(binary fission, spores,
vegetative propagation,
runners, bulbs)
DNA
Hereditary material that
controls the activities of the cell
Chromosome
A long molecule of DNA found
in the nucleus of eukaryotic
cells
DNA  gene  chromosomes
 nucleus of cell
Body System
Skeletal
Main Organs
Bones, joints, cartilage, ligaments,
bone marrow
Muscular
Muscles (skeletal, smooth, cardiac),
tendons
Circulatory (Cardiovascular)
Heart, blood vessels, blood
Digestive
Mouth, esophagus, stomach, small
intestine, liver & gallbladder
Kidneys, ureters, bladder, liver,
spleen
(large intestine, lungs, & skin)
Urinary
(Excretory)
Nervous
Brain, spinal cord & nerves
Reproductive
Testes, ovaries & uterus
Endocrine
Thyroid Gland, pancreas
Lymphatic
Lymph nodes
Respiratory
Lungs , diaphragm
Description
 Protects, supports & shapes
body
 Works with muscles to allow
movement
 Makes blood cells
 Enables body to move
 Used to move nutrients, oxygen
through the body
 Used to remove waste
 Carries oxygen & nutrients to
body cells & carries away
wastes
 Helps fight disease & infections
 Takes in & breaks down food
 Absorbs needed nutrients
 Removes wastes (urine, feces,
carbon dioxide, sweat, bile &
work out cells)
 Regulates body fluids
 Controls senses & most body
functions
 Carries messages & info
between the brain & body
Produces sex cells & hormones that
control male & female
characteristics
Produces offspring to continue the
species
Collection of glands that secrete
hormones
Regulate the bodies immunities
against disease and infection
Takes in oxygen and removes
carbon dioxide waste.