Grade 9 · Science · On Level
Free Science Concepts and Evidence worksheet - version 7
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 · On-level practice · 8 questions · Version PG-1KMT4XW-DMI8
What is mitosis used for?A. DNA B. They speed reactions by lowering activation energy C. Net movement from higher to lower concentration D. Growth, repair, and asexual cell reproduction
What is evolution?A. Net movement from higher to lower concentration B. Organisms interacting with each other and their environment C. Mitochondria D. Change in inherited population traits over generations
What is diffusion?A. DNA B. Growth, repair, and asexual cell reproduction C. Net movement from higher to lower concentration D. Mitochondria
What is an ecosystem?A. Organisms interacting with each other and their environment B. Mitochondria C. Change in inherited population traits over generations D. Growth, repair, and asexual cell reproduction
What is the role of enzymes?A. Growth, repair, and asexual cell reproduction B. Mitochondria C. DNA D. They speed reactions by lowering activation energy
What does a dominant allele do in a heterozygote?A. Mitochondria B. Organisms interacting with each other and their environment C. It is expressed in the phenotype D. DNA
What molecule stores hereditary information?A. DNA B. Organisms interacting with each other and their environment C. It is expressed in the phenotype D. Growth, repair, and asexual cell reproduction
What organelle produces most cellular ATP?A. Mitochondria B. Organisms interacting with each other and their environment C. DNA D. Net movement from higher to lower concentration
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 7
- What is mitosis used for?Growth, repair, and asexual cell reproduction
- What is evolution?Change in inherited population traits over generations
- What is diffusion?Net movement from higher to lower concentration
- What is an ecosystem?Organisms interacting with each other and their environment
- 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 molecule stores hereditary information?DNA
- What organelle produces most cellular ATP?Mitochondria
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.