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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 Cell Structure and Function
Grade 8 Microbiology
Which is SMALLEST of these four?
  1. bacterium
  2. red blood cell
  3. virus
  4. lymphocyte
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 Cell Structure and Function
Grade 8 Circulatory and Immune Systems
Which is the site where oxygen diffuses into the blood?
  1. trachea
  2. bronchus
  3. alveoli
  4. bronchiole
Grade 8 Cell Structure and Function
During which phase of meiosis does crossing-over occur?
  1. Metaphase I
  2. Anaphase II
  3. Prophase II
  4. Prophase I
Grade 8 Cell Structure and Function
The endoplasmic reticulum is an extension of which of these membranes?
  1. cell membrane
  2. outer nuclear membrane
  3. inner nuclear membrane
Grade 8 Cell Structure and Function
Grade 8 Cell Structure and Function
What does Lysosomes do?
  1. Get rid of waste
  2. Gives us our protein
  3. Stores all information
  4. Transport materials
Grade 8 Cell Structure and Function
Grade 8 Cell Structure and Function
What is the purpose of a cell membrane?
  1. Stores all information
  2. Gives the cell support
  3. too keeps things in and out of the cell
  4. get rid of waste
Grade 8 Cell Structure and Function
What is the correct order of these mitotic stages?
  1. prophase - metaphase - telophase - anaphase - cytokinesis
  2. prophase - cytokinesis - metaphase - telophase - anaphase
  3. anaphase - prophase - metaphase - telophase - cytokinesis
  4. prophase - metaphase - anaphase - telophase – cytokinesis
Grade 8 Cell Structure and Function
What is in both of the plant and animal cells?
  1. Cell wall, Er, & Golgi body
  2. Cell wall, Cytoplasm, & Golgi body
  3. Nucleolus, Ribsomes, Er
  4. All of above
Grade 8 Development and Reproduction
Grade 8 Biochemical Pathways
Which chemical process happening in cells releases energy?
  1. respiration
  2. photosynthesis
  3. breathing
  4. exercise
Grade 8 Biochemical Pathways
Which is the correct word equation for respiration?
  1. oxygen + carbon dioxide -> water + glucose
  2. water + carbon dioxide -> oxygen + glucose
  3. carbon dioxide + glucose -> water + oxygen
  4. oxygen + glucose -> water + carbon dioxide
Grade 8 Cell Structure and Function
A cell in interphase is sometimes said to be resting. Why is this misleading?
  1. interphase cells are actively dividing
  2. interphase cells are synthesizing RNA and proteins, and growing in size
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