Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 15
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-HEBLU7-KE42
What is an ecosystem?A. It is expressed in the phenotype B. Net movement from higher to lower concentration C. They speed reactions by lowering activation energy D. Organisms interacting with each other and their environment
What is mitosis used for?A. Growth, repair, and asexual cell reproduction B. Mitochondria C. They speed reactions by lowering activation energy D. Net movement from higher to lower concentration
What organelle produces most cellular ATP?A. Organisms interacting with each other and their environment B. It is expressed in the phenotype C. Mitochondria D. Change in inherited population traits over generations
What molecule stores hereditary information?A. It is expressed in the phenotype B. Growth, repair, and asexual cell reproduction C. DNA D. They speed reactions by lowering activation energy
What is evolution?A. Change in inherited population traits over generations B. They speed reactions by lowering activation energy C. DNA D. It is expressed in the phenotype
What is the role of enzymes?A. Organisms interacting with each other and their environment B. DNA C. It is expressed in the phenotype D. They speed reactions by lowering activation energy
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. DNA
What is diffusion?A. Change in inherited population traits over generations B. DNA C. Net movement from higher to lower concentration 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 15
- What is an ecosystem?Organisms interacting with each other and their environment
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What organelle produces most cellular ATP?Mitochondria
- What molecule stores hereditary information?DNA
- What is evolution?Change in inherited population traits over generations
- What is the role of enzymes?They speed reactions by lowering activation energy
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- What is diffusion?Net movement from higher to lower concentration
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.