Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 18
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-I8AEX4-KE42
What is evolution?A. Growth, repair, and asexual cell reproduction B. DNA C. They speed reactions by lowering activation energy D. Change in inherited population traits over generations
What is the role of enzymes?A. They speed reactions by lowering activation energy B. DNA C. Organisms interacting with each other and their environment D. Growth, repair, and asexual cell reproduction
What is mitosis used for?A. They speed reactions by lowering activation energy B. Growth, repair, and asexual cell reproduction C. Mitochondria D. DNA
What molecule stores hereditary information?A. Growth, repair, and asexual cell reproduction B. DNA C. They speed reactions by lowering activation energy D. Mitochondria
What does a dominant allele do in a heterozygote?A. It is expressed in the phenotype B. Mitochondria C. Change in inherited population traits over generations D. DNA
What is an ecosystem?A. Mitochondria B. Organisms interacting with each other and their environment C. They speed reactions by lowering activation energy D. Growth, repair, and asexual cell reproduction
What is diffusion?A. Growth, repair, and asexual cell reproduction B. Organisms interacting with each other and their environment C. It is expressed in the phenotype D. Net movement from higher to lower concentration
What organelle produces most cellular ATP?A. They speed reactions by lowering activation energy B. Growth, repair, and asexual cell reproduction C. It is expressed in the phenotype 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 18
- What is evolution?Change in inherited population traits over generations
- What is the role of enzymes?They speed reactions by lowering activation energy
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What molecule stores hereditary information?DNA
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- What is an ecosystem?Organisms interacting with each other and their environment
- What is diffusion?Net movement from higher to lower concentration
- 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.