Life_Science_Grade7

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A well-tested idea that explains a wide range of observation in science.: Theory
A suggested solution to a scientific problem.: Hypothesis
The theory that living things come from non-living matter.: Spontaneous generation
The theory that living things come from living things.: Biogenesis
An organism that can make its own food.: Producer
An organism that cannot make its own food.: Consumer
Break down dead organic material and recycle it back into the environment.: Decomposers
Groups of similar cells make up these.: Tissues
Similar tissues make up organs. Similar organs make up organ systems. This is an example of: Level of organization
Includes being composed of cells, using energy, needing water, reproducing, and not living forever.: Characteristics of living things
The movement of water from an area of high concentration to an area of lower concentration and not requiring energy.: Osmosis
Coming to a conclusion based on observation.: Inference
An example of this occurs when yeast releases energy from sugar without the use of oxygen.: Fermentation
Sugar is an example of this, a compound that contains carbons.: Organic compound
What you see, hear, smell or taste with your senses.: Observations
The one variable that is changed to test a hypothesis.: Manipulated variable
A group in which all the variables except for one remain the same.: Control group
The factor that changes because of the manipulated variable.: Dependent variable (sometimes called the experimental group)
Cells use oxygen to break down sugar in a process called ...: Respiration
Are different forms of a gene.: Alleles
Letters are used to represent alleles in a ...: Punnett Square
Capital letters are used to represent these.: Dominant alleles
The basic unit of inheritance.: Gene
Chromosomes are composed of ...: DNA
This is the phase that the cell spends most of its time.: Interphase
Eggs and sperms are other names for ...: Gamets
23 pairs is the number of ...: human chromosomes
Petrified wood is an example of ...: fossils
The change in species over time: Evolution
The largest number and diversity of organisms is found in this level of classification.: Kingdom
A group of organisms that can reproduce among themselves are considered to be part of the same ...: Species
Scientific names are made up of the ...and species names of the organism.: Genus
Organisms without an organized nucleus such as bacteria are described as ...: Prokaryotes
Organisms that produce their own food: Autotrophs
Members of this kingdom can be animla-lik, plant-like or fungus-like.: Protist
Fungi are made of a mass of thread-like tubed called ...: Hyphae
A waxy layer on the outer covering of leaves.: Cuticle
The openings on the underside of the leaves that allow water to exit the leaf while letting in Carbon Dioxide.: Stomata
The opening and closing of these holes (stomata) are controlled by ...: Guard cells
The organs of plants that are responsible for anchoring, absorbing water, and storing food.: Roots
Process that uses sunlight, water and carbon dioxide to make sugar and oxygen.: Photosynthesis
Parts of the plant that make the food by photosynthesis.: Leaves
The green pigment that most plants use to absorb sunlight for photosynthesis.: Chlorophyll
The vascular tissue that carries water and minerals in a plant.: Xylem
Food is carried throughout the plant using this.: Phloem
Animals with a backbone: Vertebrates
Animals without a backbone: Invertebrates
An external covering on all arthropods: Exoskeleton
Some arthopods go through stages which include egg, larva (caterpillar), pupa, and adult. This process is ...: Complete metamorphosis
Other arthropods go through stages which include egg, nymph, adult. This process is ...: Incomplete metamorphosis
An ecosystem is composed on biotic and abiotic factors. Fungi is an example of this type of factor.: Biotic factor
An ecosystem is composed on biotic and abiotic factors. Water is an example of this type of factor.: Abiotic factor
This is composed of producers and consumers.: Food chain
Plants are the first link in any ...: food chain
In the water cycle, this process involves water going from a liquid to a gas station.: Evaporation.
The process of rain, snow, sleet or hail falling upon the earth.: Precipitation
Evaporation and precipitation make up the water ...: Cycle
A flock of Canadian Geese in a field is an example of this.: Population
The flock of Canadian Gees, along with rabbits, robins, worms, flies and grass and weeds of the field make this up.: Community
Pennsylvania is part of the Deciduous Forest ...: Biome
Flagellates living in the gut of termites.: Mutualism
If you don't mow your grass for several years, your backyard will eventually become a field and then a forest. This gradual change in communities is ...: Succession

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