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Ninth Grade (Grade 9) Biology Questions

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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 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 9 Communities, Populations, and Ecosystems
The study of organisms' interactions with their surroundings is
  1. abiotic
  2. ecology
  3. sociology
  4. microbiology
  5. geology
Grade 9 Cell Structure and Function
Which process utilizes the cell's energy?
  1. passive transport
  2. active transport
  3. diffusion
  4. osmosis
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 9 Conservation and Biodiversity
Grade 9 Cell Structure and Function
How do prokaryotic cells differ from eukaryotic cells?
  1. Prokaryotic cells don't have a nucleus
  2. Prokaryotic cells are much larger in size and width
  3. Prokaryotic cells contain mitochondria
  4. Prokaryotic cells have a less distinct shape in comparison to eukaryotic cells
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