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Ninth Grade (Grade 9) Biology Questions

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Grade 9 Biochemical Pathways
Which 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 Conservation and Biodiversity
The loss of a natural habitat, often also resulting in a loss of biodiversity, is                      .
  1. poaching
  2. habitat destruction
  3. habitat fragmentation
  4. pollution
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 Cell Structure and Function
Which correctly describes a function of the nucleus?
  1. stores DNA
  2. directs the activities of the cell
  3. contains the information needed to make proteins
  4. all of the above
Grade 9 Evolution
Who founded the theory of evolution that involves natural selection?
  1. Jean-Baptiste Lamarck
  2. Ernst Haeckel
  3. Charles Darwin
  4. Aristotle
Grade 9 Biochemical Pathways
Which most accurately describes the purpose of cellular respiration?
  1. to decompose glucose into energy that can be used for cellular functions
  2. to decompose usable energy into smaller parts
  3. to decompose different types of substances to be used to construct other parts of the cell
  4. all of the above
Grade 9 Cell Structure and Function
How do prokaryotic cells differ from eukaryotic cells?
  1. Prokaryotic cells do not 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.
Grade 9 Cell Structure and Function
Which cell organelle plays the role of generating proteins?
  1. ribosomes
  2. nucleoli
  3. mitochondria
  4. chloroplasts
Grade 9 Conservation and Biodiversity
A species that impacts the survival rates of other species in an ecosystem is a(n)
  1. endangered species.
  2. keystone species.
  3. niche species.
  4. extinct species.
Grade 9 Skin, Skeleton, and Muscles
What does the skeletal system provide?
  1. a sturdy fiber to connect different parts of the body
  2. support, provides protection to vital organs, works in conjunction with muscles to allow for movement, and makes blood cells
  3. a muscle relaxant
  4. a mechanism for stopping the body from harmful actions
Grade 9 Cell Structure and Function
Active transport uses energy to transport materials into the cell.
  1. True
  2. False
Grade 9 Conservation and Biodiversity
Biodiversity is the variety of life within an area.
  1. True
  2. False
Grade 9 Cell Structure and Function
Which process utilizes the cell's energy?
  1. passive transport
  2. active transport
  3. diffusion
  4. osmosis
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