Grade 9 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 17
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-HYAT85-KE42
What does a dominant allele do in a heterozygote?A. Change in inherited population traits over generations B. DNA C. It is expressed in the phenotype D. Mitochondria
What is mitosis used for?A. Mitochondria B. Organisms interacting with each other and their environment C. DNA D. Growth, repair, and asexual cell reproduction
What organelle produces most cellular ATP?A. Growth, repair, and asexual cell reproduction B. Organisms interacting with each other and their environment C. Mitochondria D. DNA
What is the role of enzymes?A. DNA B. Net movement from higher to lower concentration C. Organisms interacting with each other and their environment D. They speed reactions by lowering activation energy
What is evolution?A. It is expressed in the phenotype B. Mitochondria C. DNA D. Change in inherited population traits over generations
What is diffusion?A. Organisms interacting with each other and their environment B. DNA C. Net movement from higher to lower concentration D. It is expressed in the phenotype
What molecule stores hereditary information?A. DNA B. Net movement from higher to lower concentration C. Mitochondria D. It is expressed in the phenotype
What is an ecosystem?A. They speed reactions by lowering activation energy B. It is expressed in the phenotype C. DNA D. Organisms interacting with each other and their environment
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 17
- 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 organelle produces most cellular ATP?Mitochondria
- What is the role of enzymes?They speed reactions by lowering activation energy
- What is evolution?Change in inherited population traits over generations
- What is diffusion?Net movement from higher to lower concentration
- What molecule stores hereditary information?DNA
- What is an ecosystem?Organisms interacting with each other and their environment
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.