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Eighth Grade (Grade 8) Biology Questions

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Grade 8 Cell Structure and Function
What is the function of the part represented by C in the cell shown?
Animal Cell
  1. builds proteins
  2. supports cell shape
  3. controls cell activities
  4. releases energy from food
Grade 8 Food Chains and Webs
A gazelle eats grass and is later eaten by a tiger. Which is the prey?
  1. lion
  2. tiger
  3. grass
  4. gazelle
Grade 8 Cell Structure and Function
The                 surrounds the cell material.
  1. chromosome
  2. cell membrane
  3. cytoplasm
Grade 8 Communities, Populations, and Ecosystems
The pond where a catfish lives is best described as a(n)
  1. habitat.
  2. population.
  3. ecosystem.
  4. organism.
Grade 8 Human Reproduction
What process involves an egg being discharged from an ovary?
  1. fertilization
  2. ovulation
  3. negative feedback
  4. freedom
Grade 8 Food Chains and Webs
Organisms that exclusively feed on producers are
  1. herbivores.
  2. omnivores.
  3. carnivores.
  4. predators.
Grade 8 Cell Structure and Function
In which organelle are molecules packaged in preparation for distribution throughout the cell?
  1. mitochondrion
  2. vacuole
  3. cytoskeleton
  4. Golgi apparatus
Grade 8 Nervous and Endocrine Systems
A signal that can cause an organism to react is a                .
  1. stimulus
  2. life span
  3. response
  4. movement
Grade 8 Cell Structure and Function
The                 is the control center of a cell.
  1. mitochondrion
  2. nucleus
  3. vacuole
Grade 8 Nervous and Endocrine Systems
The nervous system is divided into two main parts, the central nervous system and the
  1. southern nervous system.
  2. cerebral nervous system.
  3. polar nervous system.
  4. peripheral nervous system.
Grade 8 Biotic and Abiotic
What is a biotic factor in a prairie dog ecosystem? (Select all that apply.)
  1. grass and other plants that the prairie dog eats
  2. hawks, ferrets, and other animals that hunt prairie dogs
  3. the soil that provides the prairie dog with a home
  4. worms, fungi, and bacteria that also live in the soil
Grade 8 Human Reproduction
The release of an egg from an ovary is
  1. ovulation.
  2. fertilization.
  3. menstruation.
  4. afterbirth.
Grade 8 Biogeochemical Cycles
Which cycle most likely includes sunlight, photosynthesis, and respiration?
  1. water cycle
  2. carbon cycle
  3. oxygen cycle
  4. nitrogen cycle
Grade 8 Nervous and Endocrine Systems
The releasing of saliva is a function of the                         .
  1. autonomic nervous system
  2. cerebellum
  3. cerebrum
  4. somatic nervous system
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