Grade 9 · Science · On Level
Free Science Concepts and Evidence worksheet - version 10
Grade 9 science practice based on published U.S. learning expectations, with reproducible original variations. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Science Concepts and Evidence
Grade 9 · On-level practice · 8 questions · Version PG-OMQMP6-DMI8
What is an ecosystem?A. They speed reactions by lowering activation energy B. Organisms interacting with each other and their environment C. Net movement from higher to lower concentration D. Change in inherited population traits over generations
What is mitosis used for?A. It is expressed in the phenotype B. Change in inherited population traits over generations C. Growth, repair, and asexual cell reproduction D. DNA
What is evolution?A. It is expressed in the phenotype B. Change in inherited population traits over generations C. Net movement from higher to lower concentration D. Organisms interacting with each other and their environment
What does a dominant allele do in a heterozygote?A. It is expressed in the phenotype B. They speed reactions by lowering activation energy C. Change in inherited population traits over generations D. DNA
What molecule stores hereditary information?A. DNA B. Change in inherited population traits over generations C. Growth, repair, and asexual cell reproduction D. Mitochondria
What is diffusion?A. Organisms interacting with each other and their environment B. Net movement from higher to lower concentration C. They speed reactions by lowering activation energy D. DNA
What organelle produces most cellular ATP?A. DNA B. Mitochondria C. Growth, repair, and asexual cell reproduction D. Organisms interacting with each other and their environment
What is the role of enzymes?A. Growth, repair, and asexual cell reproduction B. It is expressed in the phenotype C. Change in inherited population traits over generations D. They speed reactions by lowering activation energy
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 10
- What is an ecosystem?Organisms interacting with each other and their environment
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What is evolution?Change in inherited population traits over generations
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- What molecule stores hereditary information?DNA
- What is diffusion?Net movement from higher to lower concentration
- What organelle produces most cellular ATP?Mitochondria
- What is the role of enzymes?They speed reactions by lowering activation energy
Worked example
Read the direction, identify the assessed skill, solve or cite evidence, and check the response.
Common mistake
Using a memorized procedure without checking what the question asks.
Helpful hint
Name the standard skill before answering.