Grade 9 · Science · Challenge
Free Science Concepts and Evidence worksheet - version 8
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 · Stretch challenge · 8 questions · Version PG-11FIVIX-4QJ5
What organelle produces most cellular ATP?A. DNA B. Change in inherited population traits over generations C. Mitochondria D. It is expressed in the phenotype
What molecule stores hereditary information?A. Net movement from higher to lower concentration B. It is expressed in the phenotype C. DNA D. Organisms interacting with each other and their environment
What is evolution?A. Mitochondria B. Change in inherited population traits over generations C. Growth, repair, and asexual cell reproduction D. Net movement from higher to lower concentration
What is the role of enzymes?A. They speed reactions by lowering activation energy B. Mitochondria C. Organisms interacting with each other and their environment D. DNA
What is an ecosystem?A. DNA 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 does a dominant allele do in a heterozygote?A. Mitochondria B. Organisms interacting with each other and their environment C. Change in inherited population traits over generations D. It is expressed in the phenotype
What is mitosis used for?A. Growth, repair, and asexual cell reproduction B. It is expressed in the phenotype C. They speed reactions by lowering activation energy D. DNA
What is diffusion?A. Change in inherited population traits over generations B. Mitochondria C. Net movement from higher to lower concentration D. It is expressed in the phenotype
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 8
- 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 is an ecosystem?Organisms interacting with each other and their environment
- 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 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.