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7th Grade Science Vocabulary (Grade 5)

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7th Grade Science Vocabulary

1. 
DNA
  1. having little or no concern for oneself, esp. with regard to fame or money
  2. a record kept by law-enforcement authorities of a person's arrests and convictions
  3. a long macromolecule that contains the material that transfers genetic characteristics in all life forms
  4. the act, process, or accident of varying in condition, character, or degree
2. 
The                 is the connective tissue of muscles.



3. 
Define artery.



4. 
A(n)                 is a group of similar cells that work together at the same job.
  1. organ
  2. cell
  3. tissue
5. 
Which body system includes arteries and veins?
  1. excretory system
  2. circulatory system
  3. respiratory system
  4. reproductive system
6. 
                is the result of the combination of genetic makeup and environmental effects.
  1. Phenotype
  2. Genotype
  3. Genetics
  4. Heredity
7. 
What is a genotype?
  1. an organism's genetic makeup or allele combinations
  2. an organism's physical appearance or visible traits
8. 
An organism that has two different alleles for the same trait is
  1. genotype.
  2. phenotype.
  3. homozygous.
  4. heterozygous.
9. 
Natural selection states that individuals
  1. with adaptive traits are more likely to survive.
  2. on the bottom level of a hierarchy have the greatest reproductive success.
  3. remain unchanged over a period of time.
  4. demonstrating altruistic behavior are the ones with the most mutations.
10. 
A change that increases an organism's chance for survival is a(n)
  1. mutation.
  2. evolution.
  3. adaptation.
  4. gene.
11. 
What is the type of symbiosis in which one organism benefits and another organism is neither helped or hurt?
  1. mutualism
  2. parasitism
  3. competition
  4. commensalism
12. 
What is the type of symbiosis in which both organisms benefit?
  1. mutualism
  2. parasitism
  3. commensalism
  4. predation
13. 
What is a relationship in which one organism benefits from another without helping or harming it?
  1. parasitism
  2. mutualism
  3. commensalism
14. 
What is a population?
  1. all the species that live in the same area together
  2. two parent cells joining together to form a new cell
  3. group of similar organisms that share the same area
15. 
Choose 5 of the science vocabulary words on this worksheet and write a paragraph that utilizes those words in the proper context. Underline or highlight the words you use.



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