Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 3
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-17MTP1I-KE42
What is an ecosystem?A. It is expressed in the phenotype B. Mitochondria C. Change in inherited population traits over generations D. Organisms interacting with each other and their environment
What is diffusion?A. Mitochondria B. They speed reactions by lowering activation energy C. Net movement from higher to lower concentration D. It is expressed in the phenotype
What organelle produces most cellular ATP?A. It is expressed in the phenotype B. Mitochondria C. They speed reactions by lowering activation energy D. DNA
What does a dominant allele do in a heterozygote?A. Growth, repair, and asexual cell reproduction B. Mitochondria C. DNA D. It is expressed in the phenotype
What is the role of enzymes?A. Mitochondria B. They speed reactions by lowering activation energy C. Change in inherited population traits over generations D. Growth, repair, and asexual cell reproduction
What is mitosis used for?A. Growth, repair, and asexual cell reproduction B. It is expressed in the phenotype C. Net movement from higher to lower concentration D. They speed reactions by lowering activation energy
What is evolution?A. Change in inherited population traits over generations B. It is expressed in the phenotype C. They speed reactions by lowering activation energy D. Mitochondria
What molecule stores hereditary information?A. Organisms interacting with each other and their environment B. They speed reactions by lowering activation energy C. It is expressed in the phenotype 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 3
- 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
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- 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 is evolution?Change in inherited population traits over generations
- What molecule stores hereditary information?DNA
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.