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Search Results for oxygen - All Grades

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Grade 9 Circulatory and Immune Systems
Oxygen transport involves bonding oxygen with
  1. hormones.
  2. hemoglobin.
  3. white blood cells.
Grade 8 Periodic Table and Elements
Which best describes oxygen?
  1. Oxygen is a halogen.
  2. Oxygen is a nonmetal.
  3. Oxygen is a noble gas.
  4. Oxygen is a rare earth element.
College Biochemical Pathways
A product of photosynthesis is molecular oxygen. What is the source of this oxygen?
  1. water and carbon dioxide
  2. carbon dioxide and glucose
  3. water
  4. carbon dioxide
  5. none of the above
Grade 9 Biochemical Pathways
Oxygen is released
  1. during the electron transport chain.
  2. as water is split in photosystem II.
  3. during the Calvin cycle.
  4. by chlorophyll.
Grade 8 Periodic Table and Elements

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Grade 4 Periodic Table and Elements
Grade 6 Periodic Table and Elements
Oxygen is a metal.
  1. True
  2. False
College Macromolecules
Organic Molecules contain which two elements?
  1. Carbon and Hydrogen
  2. Oxygen and Hydrogen
  3. Oxygen and Carbon
  4. Nitrogen and Oxygen
Grade 10 Macromolecules
Carbohydrates are made up of the three elements of
  1. nitrogen, oxygen, and hydrogen.
  2. carbon, hydrogen, and oxygen.
  3. sulfur, hydrogen, and oxygen.
  4. nitrogen, phosphorus, and oxygen.
Grade 7 Atmosphere
Through which process is oxygen released into the atmosphere?
  1. combustion
  2. condensation
  3. photosynthesis
  4. nitrification
Grade 9 Macromolecules
Although carbohydrates and lipids have different functions, the same elements are present in both. Which elements are found in both carbohydrates and lipids?
  1. carbon, nitrogen, and oxygen
  2. carbon, hydrogen, and oxygen
  3. carbon, nitrogen, hydrogen, and oxygen
  4. nitrogen, hydrogen, and oxygen
Grade 5 The Moon
The Moon's thin atmosphere
  1. has no known oxygen.
  2. has oxygen.
Grade 11 Atmosphere
What gases do scientists speculate were lost from Earth's primordial atmosphere, shortly after it formed?
  1. nitrogen and oxygen
  2. hydrogen and helium
  3. oxygen and hydrogen
  4. carbon dioxide and oxygen
Grade 5 Atmosphere
The two main gases in Earth's atmosphere are                            .
  1. carbon dioxide and nitrogen
  2. oxygen and hydrogen
  3. nitrogen and oxygen
  4. helium and oxygen
Grade 9 Circulatory and Immune Systems
Grade 7 Molecules and Compounds
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