Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 11
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 · Building confidence · 8 questions · Version PG-GAD72B-KE42
What is the role of enzymes?A. They speed reactions by lowering activation energy B. Change in inherited population traits over generations C. Net movement from higher to lower concentration D. It is expressed in the phenotype
What is evolution?A. Change in inherited population traits over generations B. It is expressed in the phenotype C. Growth, repair, and asexual cell reproduction D. Net movement from higher to lower concentration
What is mitosis used for?A. Organisms interacting with each other and their environment B. It is expressed in the phenotype C. Growth, repair, and asexual cell reproduction D. Change in inherited population traits over generations
What is diffusion?A. Net movement from higher to lower concentration B. DNA C. Mitochondria D. Change in inherited population traits over generations
What is an ecosystem?A. Growth, repair, and asexual cell reproduction B. Organisms interacting with each other and their environment C. DNA D. Mitochondria
What molecule stores hereditary information?A. It is expressed in the phenotype B. DNA C. They speed reactions by lowering activation energy D. Net movement from higher to lower concentration
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. Net movement from higher to lower concentration D. Organisms interacting with each other and their environment
What organelle produces most cellular ATP?A. They speed reactions by lowering activation energy B. Growth, repair, and asexual cell reproduction C. DNA D. Mitochondria
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 11
- What is the role of enzymes?They speed reactions by lowering activation energy
- What is evolution?Change in inherited population traits over generations
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What is diffusion?Net movement from higher to lower concentration
- What is an ecosystem?Organisms interacting with each other and their environment
- What molecule stores hereditary information?DNA
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- What organelle produces most cellular ATP?Mitochondria
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.