Set: Science7final

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All 66 Terms

Term Definition
Organism living thing
Cell smallest unit of life that carries on life functions
Development Changes that living things undergo as they grow
Stimulus Anything an organism reacts to
Response Reaction of an organism to a stimulus
Adaptation Characteristic that an organism that helps it to survive in its environment
Variable what is being tested in an experiment
Control Standard used to compare with the outcome of a test
Homeostasis The maintenance of steady conditions inside an organism
Limiting factor anything that restricts the number of individuals in a population
Ecology The study of interactions among organisms and their environment
Producer Organisms that use an outside energy source, such as the Sun, to make energy rich molecules
Niche how an organism survives, including its habitat, and how it obtains food and shelter
Biosphere The part of earth that supports life
Population All of the organisms in an ecosystem that belong to the same species
Consumer Organisms that cannot make their own energy rich molecules
community All of the populations in an ecosystem
habitat place in which an organism lives
Carrying Capacity The largest number of individuals of one species that an ecosystem can support over time
Ecosystem All of the organisms living in an area and the nonliving features of their environment
Symbiosis Any close relationship between species
Water Cell fluids are all mostly this compound
Latitude Distance from the equator
Sugar High energy molecules made from photosynthesis
Biotic factors living ecosystem components
Nitrogen fixation Changing nitrogen gas to usable nitrogen in the soil
Elevation Distance above sea level
Energy required for recycling matter
Producers The first level of the food chain
Fertilizers Applied to replace soil nitrogen in crop fields, lawns, and gardens
Climate Average weather over time
Ecological succession gradual changes that occur in the types of species that live in an area
Secondary succession takes place in an area that has soil that was once the home of living organisms
Climax community An area that has reached a stable stage of ecological succession
Biomes large geographic areas with similar climates and ecosystems
Permafrost Soil layer below the thawed surface in tundra and taiga biomes
Estuary where a river meets an ocean
Cellulose composes the cell wall of plants
Cuticle Waxy layer on stems and leaves
Vascular plants plants with a tube like system of vessels
Rhizoid root like filament that holds moss in place
Gymnosperms vascular plants with no flowers or fruit; produce seeds in cones
Angiosperms Vascular plants with flowers; produce seeds inside a fruit
Dicot Flowering plants with two cotyledons inside their seeds
Pioneer species name given to the first plants to grow in new environments
Phloem Tissue that moves food from leaves to other plant parts
Cambium Tissue that produces new xylem and phloem cells
Guard cells In a plant leaf, cells that surround the stomata to open and close them
Algae Plantlike protists
Pseudopods Footlike cytoplasm extensions
Cilia Threadlike structures extending from the cell membrane of Paramecia
Spore Reproductive cell of fungi
Budding Form of reproduction used by yeast in which the organism grows off the side of a parent
Lichen Organisms made of fungus and green algae or a cyanobacteria
Hyphae Mass of threadlike tubes that make up a fungus
Heredity passing of traits from one generation to another
Recombinant DNA inserting DNA into bacteria
Genitics study of inheritance
Sex linked gene an allele inherited on a sex chromosome
Recessive a trait that is hidden
Probability the chance that an event will take place
Genotype genetic makeup of an organism
Gene therapy a normal allele is placed into a virus
Phenotype physical appearance resulting from genotype
Incomplete dominance both alleles are expressed in offspring
Phylogenic inheritance more than one set of genes controls a trait

Set Information

Terms 66
Creator luckynumber13
Created June 3, 2008
Group Lackawana Trail 7th and 8th grade
Tags vocabulary, science, life, final
Access Anyone
Edit Group: Lackawana Trail 7th and 8th grade

Description

Here it is, The 7th grade final exam study guide! Good Luck!

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Most Missed Words

  1. Phylogenic inheritance → more than one set of genes controls a trait - 69 misses
  2. Cellulose → composes the cell wall of plants - 62 misses
  3. Genitics → study of inheritance - 62 misses
  4. Incomplete dominance → both alleles are expressed in offspring - 62 misses
  5. Adaptation → Characteristic that an organism that helps it to survive in its environment - 61 misses
  6. Homeostasis → The maintenance of steady conditions inside an organism - 60 misses
  7. Consumer → Organisms that cannot make their own energy rich molecules - 60 misses