Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 13
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-GUCEG9-KE42
What is the role of enzymes?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. Growth, repair, and asexual cell reproduction
What is an ecosystem?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. Growth, repair, and asexual cell reproduction
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. Mitochondria
What is mitosis used for?A. They speed reactions by lowering activation energy B. Growth, repair, and asexual cell reproduction C. Net movement from higher to lower concentration D. Mitochondria
What organelle produces most cellular ATP?A. Mitochondria B. DNA C. Change in inherited population traits over generations D. Organisms interacting with each other and their environment
What is diffusion?A. Net movement from higher to lower concentration B. Organisms interacting with each other and their environment C. Growth, repair, and asexual cell reproduction D. They speed reactions by lowering activation energy
What molecule stores hereditary information?A. Change in inherited population traits over generations B. DNA C. Organisms interacting with each other and their environment D. Mitochondria
What does a dominant allele do in a heterozygote?A. It is expressed in the phenotype B. Net movement from higher to lower concentration C. They speed reactions by lowering activation energy D. Growth, repair, and asexual cell reproduction
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 13
- What is the role of enzymes?They speed reactions by lowering activation energy
- What is an ecosystem?Organisms interacting with each other and their environment
- What is evolution?Change in inherited population traits over generations
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What organelle produces most cellular ATP?Mitochondria
- What is diffusion?Net movement from higher to lower concentration
- What molecule stores hereditary information?DNA
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
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.