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Eighth Grade (Grade 8) Biology Questions

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Grade 8 Cell Structure and Function
                are responsible for making proteins in the cell.
  1. Vacuoles
  2. Chloroplasts
  3. Mitochondria
  4. Ribosomes
Grade 8 DNA, RNA, and Genetics
What is the purpose of a Punnett square?
  1. to diagram family relationships that include several generations
  2. to explain why some genes are recessive and others are dominant
  3. to compare inherited traits to acquired traits
  4. to illustrate how the alleles of parents might be passed on to their offspring
Grade 8 Cell Structure and Function
An individual's "fingerprint" is carried by the
  1. cell membrane.
  2. DNA.
  3. mitochondria.
  4. RNA.
Grade 8 Biomes
The largest biome is the
  1. tundra.
  2. taiga.
  3. temperate deciduous forest.
  4. temperate rain forest.
  5. tropical rain forest.
  6. desert.
Grade 8 Skin, Skeleton, and Muscles
The adult body is made up of                 bones.
  1. 350
  2. 206
  3. 296
  4. 256
Grade 8 Biochemical Pathways
Which statement describes a primary distinction between respiration and photosynthesis?
  1. Photosynthesis needs oxygen, while respiration needs water.
  2. Photosynthesis needs carbon dioxide, while respiration needs oxygen and sugars.
  3. Photosynthesis makes oxygen, while respiration makes water.
  4. Photosynthesis makes water, while respiration makes carbon dioxide.
Grade 8 Biomes
Which is an example of a aquatic ecosystem?
  1. tundra
  2. ocean
  3. grassland
  4. rain forest
Grade 8 Skin, Skeleton, and Muscles
What are the functions of the skeletal system?
  1. provides framework for the body and protective shields for softer tissues
  2. gives support
  3. serves as attachments for muscles
  4. acts with muscles when body parts move
  5. all of the above
  6. none of the above
Grade 8 Cell Structure and Function
The DNA is found in the                 of a prokaryote.
  1. cytoplasm
  2. nucleus
Grade 8 Evolution
One kind of modern evidence for evolution is                      .
  1. change.
  2. natural selection.
  3. selection.
  4. transitional fossils.
Grade 8 Food Chains and Webs
What is the primary purpose of a food web?
  1. illustrates what eats what
  2. diagrams the apex predator in a chain
  3. depicts the interconnectedness of organisms
  4. shows the movement of energy in an ecosystem
Grade 8 Evolution
Different kinds of plants living in the same area must compete for water. Which plant represents "survival of the fittest"?
  1. the plant with the largest leaves
  2. the plant with a compact root system
  3. the plant with the largest root system
  4. the plant with needles instead of leaves
Grade 8 Anatomical Organization
A muscle is an example of a(n)                .
  1. cell
  2. organ
  3. organ system
  4. tissue
Grade 8 Circulatory and Immune Systems
What kind of cells carry oxygen to the parts of the body through arteries and veins?
  1. white blood cells
  2. plasma
  3. red blood cells
  4. platelets
Grade 8 Cell Structure and Function
What is the smallest unit of any organism that is capable of independent function?
  1. tissue
  2. cell
  3. organ
  4. muscle
Grade 8 Adaptations and Behavior
Migration is a behavioral adaptation.
  1. True
  2. False
Grade 8 Biochemical Pathways
What process produces carbon dioxide?
  1. photosynthesis
  2. replication
  3. mutation
  4. respiration
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