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Seventh Grade (Grade 7) Science Questions

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Grade 7 Symbiosis
The organism that a parasite feeds off of is the                  .
  1. vein.
  2. host.
  3. white blood cell.
  4. producer.
Grade 7 Communities, Populations, and Ecosystems
A niche does not include what?
  1. when and how an organism reproduces.
  2. what type of food an organism eats.
  3. how an organism obtains its food.
  4. physical conditions it requires to survive.
  5. what the organism smells like.
Grade 7 Anatomical Organization
What are the four levels of organization for a multicellular organism, in order?
  1. cells, tissues, organ systems, organs
  2. cells, organs, organ systems, tissues
  3. tissues, organs, organ systems, cells
  4. cells, tissues, organs, organ systems
Grade 7 DNA, RNA, and Genetics
How many chromosomes does a human body cell have?
  1. 23
  2. 2
  3. 46
  4. 16
Grade 7 Adaptations and Behavior
Which characteristic of living things best explains why birds fly south for the winter?
  1. Living things reproduce.
  2. Living things maintain internal balance.
  3. Living things respond to their environment.
  4. Living things are based on a universal genetic code.
Grade 7 Forces and Motion
Marco and Janice are playing tug of war. Marco is pulling at a force of 10 Newtons South. Janice is pulling with a force of 12 Newtons North. What is the likely outcome of this tug of war battle?
  1. 2 Newtons of force, North, Janice is winning
  2. 2 Newtons of force, South, Marco is winning
  3. 22 Newtons of force, North, Janice is winning
  4. 22 Newtons of force, South, Marco is winning
Grade 7 Cell Structure and Function
What part of the cell breaks down the waste products of the cell?
  1. centriole
  2. lysosome
  3. nucleolus
  4. ribosome
Grade 7 Waves and Sound
A wave on any surface of water is a(n)                .
  1. water wave
  2. sound wave
  3. sound
  4. earthquake
Grade 7 Properties of Matter
Which choice is associated with mass?
  1. It never changes
  2. Changes as gravity changes
  3. Measured on spring scale
Grade 7 DNA, RNA, and Genetics
What an organism looks like, or its other detectable characteristics, is its
  1. genetic variable.
  2. genotype.
  3. phenotype.
  4. allele.
Grade 7 DNA, RNA, and Genetics
What is the study of heredity?
  1. ecology
  2. genetics
  3. chromosomes
  4. cosmetology
Grade 7 Human Reproduction
Where does gestation occur?
  1. uterus
  2. placenta
  3. umbilical cord
  4. none of the above
Grade 7 Communities, Populations, and Ecosystems
What is a system that is formed by the interaction of a community of organisms and its environment?
  1. evaporation
  2. ecosystem
  3. solar system
  4. water cycle
Grade 7 Scientific Method
What is an inference?
  1. a logical conclusion
  2. a universal negative
  3. an observation
Grade 7 Small Bodies and Dwarf Planets
This body once was, but no longer is considered to be, a planet in our solar system.
  1. Neptune
  2. Pluto
  3. Sun
  4. Mars
Grade 7 Communities, Populations, and Ecosystems
The largest number of individuals of a species that an environment can support and maintain for a long period of time is its                    .
  1. population
  2. maximum load
  3. carrying capacity
  4. biological capacity
Grade 7 Light and Optics
Objects that emit light are                .
  1. illuminated
  2. luminous
  3. opaque
  4. transparent
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