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Ninth Grade (Grade 9) Biology Questions

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Grade 9 Communities, Populations, and Ecosystems
Every member of the same species that inhabits a region makes up a
  1. community.
  2. habitat.
  3. ecosystem.
  4. population.
Grade 9 Cell Structure and Function
What organelle synthesizes and transports proteins?
Animal Cell
  1. I
  2. D
  3. C
  4. E
  5. K
Grade 9 Cell Structure and Function
Why does osmosis cause an animal cell to burst when it is placed in a freshwater environment?
  1. Osmosis leads to water moving into the cell.
  2. Osmosis leads to water moving out of the cell.
  3. Osmosis leads to solutes moving into the cell.
  4. Osmosis leads to solutes moving out of the cell.
Grade 9 Conservation and Biodiversity
Which description characterizes a stable ecosystem?
  1. one type of organism
  2. two types of organisms
  3. at least one type of plant and one type of animal
  4. a wide variety of organisms
Grade 9 Cell Structure and Function
By the end of one complete cycle of meiosis, the original cell has divided into                                 .
  1. two genetically identical cells
  2. four genetically identical cells
  3. two genetically different cells
  4. four genetically different cells
Grade 9 Conservation and Biodiversity
Habitat destruction can result in the loss of                .
  1. species
  2. air
  3. energy
  4. land
Grade 9 Communities, Populations, and Ecosystems
A stable ecosystem is made up of a wide range of microorganisms, plants, and animals.
  1. True
  2. False
Grade 9 Cell Structure and Function
Plants and animals are unicellular organisms.
  1. True
  2. False
Grade 9 Cell Structure and Function
Which process needs energy from a cell?
  1. diffusion
  2. osmosis
  3. facilitated diffusion
  4. active transport
Grade 9 Communities, Populations, and Ecosystems
The number of births, deaths, and individuals that enter or leave a town are three factors that can affect                .
  1. geographics
  2. immigration
  3. population size
  4. range
Grade 9 Biochemical Pathways
C6H12O6+6O2→6CO2+6H2O+energy is the balanced chemical equation for which process?
  1. Photosynthesis
  2. Glycolysis
  3. Cellular respiration
  4. Krebs cycle
Grade 9 Biochemical Pathways
Which 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 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 DNA, RNA, and Genetics
Two alternative forms of a gene are called                .
  1. alleles
  2. characteristics
  3. genomes
  4. traits
Grade 9 Communities, Populations, and Ecosystems
A limiting factor that depends on population size is a                                  .
  1. size limiting factor
  2. prediction limiting factor
  3. completion limiting factor
  4. density-dependent limiting factor
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.
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