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Eighth Grade (Grade 8) Biology Questions

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Grade 8 Biotic and Abiotic
Select the letter of EACH choice that is a biotic factor in a prairie dog ecosystem.
  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 Biochemical Pathways
What is the difference between photosynthesis and cellular respiration?
  1. Photosynthesis needs oxygen, Respiration needs water
  2. Photosynthesis needs carbon dioxide, Respiration needs oxygen and sugars
  3. Photosynthesis makes oxygen, Respiration makes water
  4. Photosynthesis makes water, Respiration makes carbon dioxide
Grade 8 Circulatory and Immune Systems
Grade 8 Circulatory and Immune Systems
What are the chambers of the heart?
  1. Atria or auricles and ventricles
  2. veins and arteries
  3. adenoids and tonsils
Grade 8 Nervous and Endocrine Systems
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 Microbiology
Which is SMALLEST of these four?
  1. bacterium
  2. red blood cell
  3. virus
  4. lymphocyte
Grade 8 Circulatory and Immune Systems
Grade 8 Circulatory and Immune Systems
What are the functions of blood?
  1. helps regulate your body temperature
  2. transports oxygen, nutrients, & hormones through the body
  3. defends the body from infection
  4. all of the above
Grade 8 Nervous and Endocrine Systems
What are neurons?
  1. Cells that give, receive, and handle information.
  2. Cells that help your body to grow physically larger.
  3. Cells that you don't have when you are first born.
  4. Cells that only exist in your lungs.
Grade 8 Cell Structure and Function
Grade 8 Circulatory and Immune Systems
Pulmonary veins come from the lungs and are the only veins in your body that do what?
  1. Get rid of deoxygenated blood.
  2. Carry liquid wastes.
  3. Carry little bits of iron in them.
  4. Carry oxygenated blood
Grade 8 Circulatory and Immune Systems
Capillaries have thin walls that allow what to happen?
  1. Oxygen and nutrients to flow out of the blood to the cells.
  2. Blood to flow in very narrow places.
  3. Cuts to heal quickly.
  4. Blood to stop flowing if needed.
Grade 8 Respiration, Digestion, and Excretion
Which list shows the path of oxygen entering the body?
  1. nose - bronchi - lungs - trachea
  2. trachea - nose - bronchi - lungs
  3. nose - trachea - bronchi - lungs
  4. trachea - nose - lungs - bronchi
Grade 8 Nervous and Endocrine Systems
This tissue sends messages about smells and sounds to the brain.
  1. muscle tissue
  2. nervous tissue
  3. epithelial tissue
Grade 8 Cell Structure and Function
What role(s) does the cytoskeleton play in a living cell?
  1. maintaining cell shape
  2. movement
  3. contraction
  4. all of the above
Grade 8 Skin, Skeleton, and Muscles
This tissue covers your body and many organs.
  1. muscle tissue
  2. nervous tissue
  3. epithelial tissue
Grade 8 Skin, Skeleton, and Muscles
This tissue contracts to move blood.
  1. muscle tissue
  2. nervous tissue
  3. epithelial tissue
Grade 8 Circulatory and Immune Systems
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