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Biology Questions - All Grades

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Grade 5 Respiration, Digestion, and Excretion
Which system of the body helps you breathe?
  1. Circulatory
  2. Respiratory
  3. Digestive
  4. Excretory
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 11 DNA, RNA, and Genetics
Grade 6 Food Chains and Webs
Grade 9 Cell Structure and Function
You are looking through a microscope at an unknown organism. The organism appears to have a cell membrane as well as a cell wall. What conclusions can you make about what type of cell it is?
  1. The cell cannot be from a eukaryotic organism
  2. The cell can be from a prokaryotic or eukaryotic organism
  3. The cell can only be a prokaryotic organism
  4. The cell cannot be from a prokaryotic organism
Grade 5 Taxonomy
Grade 5 Botany
Grade 9 Biochemical Pathways
The process carried out by yeast that causes bread to dough rise is                         .
  1. alcoholic fermentation
  2. cellular respiration
  3. lactic acid fermentation
  4. mitosis
Grade 4 Adaptations and Behavior
Grade 7 Skin, Skeleton, and Muscles
This system allows for moving by contracting.
  1. Tacos
  2. Lymphatic
  3. Muscular
  4. Reproductive
Grade 8 Microbiology
Which is SMALLEST of these four?
  1. bacterium
  2. red blood cell
  3. virus
  4. lymphocyte
Grade 5 Taxonomy
Grade 9 Food Chains and Webs
An autotroph is a                                      ?
  1. an organism that makes its own food
  2. an organism that eats other organisms
  3. an organism that eats decaying matter
  4. none of the above
Grade 10 Macromolecules
Grade 8 Cell Structure and Function
Grade 7 Respiration, Digestion, and Excretion
Where does the circulatory system get Oxygen (O2) from?
  1. Digestive System
  2. Endocrine System
  3. Respiratory System
  4. Skeletal System
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