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Search Results for oxygen - All Grades

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Grade 6 Periodic Table and Elements
Grade 7 Atmosphere
Through which process is oxygen released into the atmosphere?
  1. combustion
  2. condensation
  3. photosynthesis
  4. nitrification
Grade 7 Earth's Layers
Where is most of Earth's oxygen found?
  1. crust
  2. atmosphere
  3. water
  4. plants
Grade 7 Atmosphere
How is the ozone layer helpful?
  1. needed for cellular respiration
  2. protects Earth from radiation
  3. used during combustion
  4. forms organic molecules
Grade 10 Biochemical Pathways
What are the reactants of cellular respiration?
  1. glucose and oxygen
  2. oxygen and carbon dioxide
  3. water and oxygen
  4. glucose and carbon dioxide
Grade 6 Circulatory and Immune Systems
One job of the circulatory system is to carry away
  1. oxygen and nutrients.
  2. carbon dioxide and wastes.
  3. oxygen and carbon dioxide.
  4. oxygen and wastes.
Grade 6 Nature and Science (Stories)

This question is a part of a group with common instructions. View group »

Based on the passage, deoxygenated most likely means
  1. be full of oxygen.
  2. need oxygen to survive.
  3. have the oxygen removed from.
  4. carry oxygen from place to place.
College Biochemical Pathways
Which of the following are products of cellular respiration?
  1. oxygen and ATP
  2. oxygen and carbon dioxide
  3. ATP and carbon dioxide
  4. oxygen and glucose
Grade 10 Biochemical Pathways
Grade 7 Atmosphere
What are the main gases that make up the atmosphere?
  1. nitrogen and carbon
  2. oxygen and nitrogen
  3. carbon and oxygen
College Biochemical Pathways
What are the main products of photosynthesis?
  1. glucose and oxygen
  2. ATP and oxygen
  3. mesophyll
  4. photosynthesis
Grade 10 Macromolecules
What are the most basic elements of life?
  1. oxygen, carbon, hydrogen, nitrogen
  2. oxygen, nitrogen
Grade 12 Circulatory and Immune Systems
These cells transport oxygen.
  1. leukocytes
  2. erythrocytes
  3. dermacytes
  4. osteocytes
Grade 4 Zoology
Oxygen helps fish to
  1. swim.
  2. breathe.
  3. float.
Grade 5 Botany
Grade 5 Biochemical Pathways
What does photosynthesis produce?
  1. oxygen and glucose
  2. water and sugar
  3. oxygen and proteins
Grade 4 Biochemical Pathways
Plants take in                         and give off                        .
  1. carbon dioxide; oxygen
  2. helium; oxygen
  3. carbon dioxide; glucose
  4. oxygen; carbon dioxide
Continuing Education Occupational Safety (OSHA)
An oxygen deficient atmosphere contains:
  1. less than 19.5% oxygen
  2. less than 22% oxygen
  3. less than 23% oxygen
  4. less than 16% oxygen
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