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Science Questions - All Grades

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Grade 9 Food Chains and Webs
Grade 9 Conservation and Biodiversity
If fish reproduce at a slower rate than the rate at which they are caught, how will their population change?
  1. It will decrease
  2. The fish will swim to other bodies of water
  3. It will not change
  4. It will increase dramatically
Grade 9 Biochemical Pathways
Grade 9 Biotic and Abiotic
Which of the following is a biotic factor operating within an ecosystem?
  1. The kind of climate in a given region
  2. Carnivores that eat other animals
  3. The concentration of hydrogen gas in the air
  4. The rate of water flow in a body of water
Grade 9 Macromolecules
How do enzymes help chemical reactions to occur?
  1. They speed up reactions by adding more substrates to react with enzymes
  2. They slow down reactions by increasing the activation energy
  3. They speed up chemical reactions by lowering the activation energy required
  4. They slow down reactions by changing the overall temperature of the reaction
Grade 8 Microbiology
Which of the following is considered to be smallest in size?
  1. bacterium
  2. red blood cell
  3. virus
  4. lymphocyte
Grade 9 Biochemical Pathways
Which of the following are typically products of cellular respiration?
  1. carbon dioxide and water
  2. oxygen and carbon dioxide
  3. water and glucose
  4. glucose and oxygen
Grade 9 Biochemical Pathways
Which of the following are typically products of photosynthesis?
  1. oxygen and carbon dioxide
  2. glucose and oxygen
  3. carbon dioxide and water
  4. water and glucose
Grade 9 Biochemical Pathways
Which of the following correctly describes the purpose of photosynthesis?
  1. To release energy by decomposing glucose
  2. To store energy in the form of carbon dioxide
  3. To use sunlight energy to make sugars
  4. To create water for hydration
Grade 9 Evolution
Who founded the theory of evolution that involves natural selection?
  1. Jean-Baptiste Lamarck
  2. Ernst Haekel
  3. Charles Darwin
  4. Aristotle
Grade 4 Microbiology
Germs are
  1. a yummy snack
  2. organisms that are so small they can only be seen by a microscope
  3. bugs
  4. a vegetable
Grade 9 Cell Structure and Function
What is one characteristic that only eukaryotic cells have?
  1. They have a nucleus.
  2. They lack organelles.
  3. They lack ribosomes.
  4. They have a cell wall.
Grade 8 Cell Structure and Function
Grade 8 Planetary Motion

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

Which statement best describes tides experienced on Earth when the sun, moon, and Earth are positioned as shown in the diagram?
Spring Tide
  1. very high, high tides; very low, low tides
  2. very high, high tides; average low tides
  3. average high tides; very low, low tides
  4. average high tides; average low tides
Grade 9 Communities, Populations, and Ecosystems
The study of organisms' interactions with their surroundings is
  1. abiotic
  2. ecology
  3. sociology
  4. microbiology
  5. geology
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