Grade 9 · Science · Challenge
Free Science Concepts and Evidence worksheet - version 2
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-133GHOR-4QJ5
What organelle produces most cellular ATP?A. They speed reactions by lowering activation energy B. Organisms interacting with each other and their environment C. Mitochondria D. It is expressed in the phenotype
What is the role of enzymes?A. They speed reactions by lowering activation energy B. Organisms interacting with each other and their environment C. It is expressed in the phenotype D. Growth, repair, and asexual cell reproduction
What is mitosis used for?A. Net movement from higher to lower concentration B. It is expressed in the phenotype C. They speed reactions by lowering activation energy D. Growth, repair, and asexual cell reproduction
What is an ecosystem?A. They speed reactions by lowering activation energy B. It is expressed in the phenotype C. Organisms interacting with each other and their environment D. Mitochondria
What molecule stores hereditary information?A. Growth, repair, and asexual cell reproduction B. Mitochondria C. It is expressed in the phenotype D. DNA
What is diffusion?A. It is expressed in the phenotype B. DNA C. Organisms interacting with each other and their environment D. Net movement from higher to lower concentration
What does a dominant allele do in a heterozygote?A. It is expressed in the phenotype B. DNA C. Change in inherited population traits over generations D. Mitochondria
What is evolution?A. Organisms interacting with each other and their environment B. Growth, repair, and asexual cell reproduction C. It is expressed in the phenotype D. Change in inherited population traits over generations
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 2
- What organelle produces most cellular ATP?Mitochondria
- 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 an ecosystem?Organisms interacting with each other and their environment
- What molecule stores hereditary information?DNA
- What is diffusion?Net movement from higher to lower concentration
- What does a dominant allele do in a heterozygote?It is expressed in the phenotype
- 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.