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7th Grade Life Science
SOL Review
SOL’s LS.2-14
SOL LS.2
Complete each statement about the cell
theory.
All cells come from _____________.
Other cells
Cells can carry out all of _____________.
Life’s functions
All _____________ are made of cells.
Living things
What scientific instrument has led to the
development of the cell theory?
Microscope
Identify the parts of the cell.
Creates protein.
Ribosomes
Transports things throughout the cell.
ER (Endoplasmic Reticulum)
Store food, water, and waste.
Vacuoles
Powerhouse of the cell; supplies energy.
Mitochondria
Control center of the cell.
Nucleus
Jelly-like substance.
Cytoplasm
What two things are found only in plant cells?
Chloroplast and Cell Wall
Absorbs sunlight in plants?
Chloroplast (Chlorophyll)
Protects plant cells?
Cell Wall
Protects plant and animal cells plus allows things
to move in and out of the cell?
Cell Membrane
What can plant cells do that animal cells can’t?
Make their own food
What process creates reproductive (sex) cells
that carry half the genetic material of the
parent?
Meiosis
What process creates new cells for growth and
repair through cell division that are identical to
the parent cell?
Mitosis
What are the phases of the cell cycle?
Interphase  Mitosis  Cytokinesis
What are the steps in mitosis?
Prophase  Metaphase  Anaphase 
Telephase
SOL LS.3
Groups of cells create?
Tissues
Groups of tissues create?
Organs
Groups of organs create?
Systems
What is an organism made of one cell called?
Unicellular
What is an organism made of more than one cell
called?
Multicellular
What is the passive transport of water
molecules across a cell membrane called?
Osmosis
What is the passive transport of substances
other than water molecules across a cell
membrane called?
Diffusion
What is the ability of the cell membrane to
block some substances, but allow others to pass
into the cell?
Selective Permeability
What is the hierarchy of living things?
Domain  Kingdom  Phylum  Class 
Order  Family  Genus  Species
What is an organism’s genus and species called?
Binomial Nomenclature
What is a group of similar looking organisms
that have the ability to reproduce called?
Species
What domain contains single cell organisms that
can survive in extreme conditions?
Archaea
What domain contains the kingdoms of Protista,
Fungi, Animals, and Plants?
Eukarya
What domain is made up of microscopic
organisms that recycle nutrients?
Bacteria
Identify the animal group (phyla).
Jellyfish, sea anemones, and corals
cnidarians
Clams, oysters, scallops, snails, and octopuses
mollusks
Segmented worms
annelids
Insects, spiders, and crustaceans like lobsters
and crabs
anthropods
Sea stars, sea urchins, sand dollars, and sea
cucumbers
echinoderms
Fish, frogs, snakes, birds, bears, and humans
chordates
Identify the plant group (phyla).
Grows close to the ground, no true root system, no
flowers
Mosses
Grows close to the ground, true root system, no
flowers
Ferns
Grows tall, true root system, needles and cones
Conifers
Variable sizes, true root system, flowers, and often
fruit
Flowering plants
SOL LS.5
What is the process where plants create their
own food?
H2O + CO2 + Sunlight  C6H12O6 + O2
Photosynthesis
What source of energy is needed for
photosynthesis?
Sunlight
What two resources are the reactants during
photosynthesis?
Water and Carbon Dioxide
What two resources are the products of
photosynthesis?
Glucose and Oxygen
What do plants use glucose for?
Food
What chemical in chloroplast absorbs
or traps sunlight?
Chlorophyll
What process is the foundation of virtually all
food webs?
Photosynthesis
What cellular process breaks down food
molecule and releases energy?
Cellular Respiration
SOL LS.6
Identify the Cycle
Precipitation, Runoff, Evaporation, Condensation,
Transpiration
Water Cycle
Animals release Carbon Dioxide
Plants carry out Photosynthesis
Oxygen Cycle
Animals eat plants
Animals die and produce waste products
Decomposers recycle nutrients
Nitrogen Cycle
Grass  Mouse  Snake  Hawk
What is the Producer above?
Grass
What is the 1st Order Consumer above?
Mouse
What is the 2nd Order Consumer above?
Snake
What is the 3rd Order Consumer above?
Hawk
What happens to the number of organisms and
the amount of energy as you move through a
food pyramid or food web?
Decreases
SOL LS.7
What are the five needs of all animals?
Food, Water, Air, Shelter, and Space
What term describes animals that are fighting
for the same need?
Competition
What term describes animals working together
to meet a need?
Cooperation
What term describes organisms within a
population that have specific jobs to ensure
basic needs are met? (Bees and Ants)
Social Hierarchy
What term describes an organisms need to
establish a habitat in order to meet basic needs
and obtain resources?
Territorial Imperative
(True/False) Too much of any of need can be as
harmful as too little.
True
SOL LS.8
Identify each as a producer, consumer, or
decomposer.
A grasshopper is a _____________.
Consumer
Wheat is a _____________.
Producer
A bacteria spore is a _____________.
Decomposer
Contrast a predator and prey.
Predator eats Prey
Give an example of a predator – prey
relationship.
Wolf eats Rabbit
Give an example of a producer – consumer
relationship.
Rabbit eats Grass
Identify each symbiotic relationship.
One thing benefits while the other is harmed.
(Tick on a Dog)
Parasitism
One thing benefits while the other isn’t
affected. (Vultures feed on the scrapes left by
a Lion)
Commensalism
Both things benefit. (Sharks are cleaned by a
smaller fish)
Mutualism
What is an animal’s role or job in life called?
Niche
SOL LS.9
What are the living organisms within a specific
area and their physical environment called?
Ecosystem
What are the three main types of ecosystems?
Land, Marine, and Freshwater
What are the large regions with ecological
communities adapted to the climate and other
conditions called?
Biome
What is an abiotic factor?
Nonliving factor
Give an example of an abiotic factor.
Rock, water, climate, temperature
What is a biotic factor?
Living factor
Give an example of a biotic factor.
Trees, animals, cells
What is the warmest biome?
Desert
What is the coldest biome?
Tundra
What biome gets the most rain?
Rainforest
What biome gets the least rain?
Desert
What biome do the animals need to be able to
run fast?
Grassland
What biome do animals and plants need to store
water?
Desert
What biome do plants have very large leaves?
Rainforest
What biome is white fur an advantage?
Tundra
What biome is being able to climb or fly
important?
Rainforest
What biome would you find trees with needles
and cones?
Coniferous Forest (Taiga)
What biome would you find oak and maple
trees?
Deciduous Forest
What biome are large feet an advantage?
Tundra
Are there more plants or animals in the
grassland or rainforest? Why?
Rainforest, more rain & stable climate
What biome would you find corn and wheat
growing?
Grassland
SOL LS.10 & LS.11
What terms describes a plant either growing
towards or away from light?
Phototropism
What term describes an animal that lowers its
metabolism in order to deal with cold conditions?
Hibernation
What term describes a plants ability to suspend its
metabolism in order to deal with adverse
conditions?
Dormancy
You’re a raccoon. What will happen to your
population in each case below?
If the size of the habitat increases?
Population increases
If the size of the habitat decreases?
Population decreases
If the number of wolves decrease?
Population increases
If the number of wolves increase?
Population decreases
If the food supply decreases?
Population decreases
If the food supply increase?
Population increases
If the number of squirrel (competition)
increase?
Population decreases
If the number of squirrel (competition)
decrease?
Population increases
What is the addition of excess nutrients to an
ecosystem called?
Eutrophication
What can permanently alter a community and
ecosystem?
Major Climate Changes and Catastrophic
Disasters
(True/False) Actions by humans can have both a
positive and negative effect on the health of an
ecosystem and the population of a community.
True
SOL LS.12
Your individual traits are called?
Genes
What creates DNA and contains all of your
individual traits?
Chromosomes
What is your complete genetic code called?
DNA
What is the shape of DNA?
Double Helix (Spiral Staircase)
What word describes the strong trait?
Dominant
What word describes the weak trait?
Recessive
What is trait that actually shows called?
Phenotype
What is the gene combination called?
Genotype
What is the name of the chart that shows
possible phenotypes and genotypes?
Punnett Square
Identify a characteristic you inherited.
Eye color, Hair color, Nose shape
Identify a characteristic determined by your
environment.
Personality, Intelligence, Language Skills
Who is the Father of Genetics?
Gregory Mendel
Who discovered DNA?
Rosalind Franklin
Who created the double helix model of DNA?
Watson and Crick
What is it called when the genetic code is
manipulated to obtain a desired product?
Genetic Engineering
SOL LS.13
What are changes over time in order to survive?
Adaptations
What is the process where animals select mates
with traits best suited for survival?
Natural Selection
What are inheritable changes to an organism’s
genetic code?
Mutations
What term describes when a species completely
dies out?
Extinction
What does the fossil record, genetic
information, distribution of organisms, and
similarities among species show?
Evidence of Evolution