Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 14
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-H4C058-KE42
What is diffusion?A. Growth, repair, and asexual cell reproduction B. It is expressed in the phenotype C. Organisms interacting with each other and their environment D. Net movement from higher to lower concentration
What is the role of enzymes?A. They speed reactions by lowering activation energy B. It is expressed in the phenotype C. Mitochondria D. DNA
What organelle produces most cellular ATP?A. It is expressed in the phenotype B. Mitochondria C. Change in inherited population traits over generations D. They speed reactions by lowering activation energy
What is an ecosystem?A. Mitochondria B. DNA C. It is expressed in the phenotype D. Organisms interacting with each other and their environment
What molecule stores hereditary information?A. DNA B. Organisms interacting with each other and their environment C. It is expressed in the phenotype D. Change in inherited population traits over generations
What does a dominant allele do in a heterozygote?A. Net movement from higher to lower concentration B. Growth, repair, and asexual cell reproduction C. Mitochondria D. It is expressed in the phenotype
What is mitosis used for?A. Growth, repair, and asexual cell reproduction B. DNA C. Mitochondria D. It is expressed in the phenotype
What is evolution?A. Organisms interacting with each other and their environment B. Change in inherited population traits over generations C. They speed reactions by lowering activation energy D. DNA
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 14
- What is diffusion?Net movement from higher to lower concentration
- What is the role of enzymes?They speed reactions by lowering activation energy
- What organelle produces most cellular ATP?Mitochondria
- 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 is mitosis used for?Growth, repair, and asexual cell reproduction
- What is evolution?Change in inherited population traits over generations
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.