Section 3: Overview and Exam Framework
TX PACT: Life Science: Grades 7–12 (738)
Exam Overview
| Exam Name | TX PACT: Life Science: Grades 7–12 (738) |
|---|---|
| Exam Code | 738 |
| Time | 3 hours and 15 minutes total appointment time
|
| Number of Questions | 125 selected-response questions |
| Format | Computer-administered test (CAT) |
The TX PACT: Life Science: Grades 7–12 (738) exam is designed to assess whether a test taker has demonstrated the requisite knowledge and skills for admission to an educator preparation program. The 125 selected-response questions are based on the Life Science: Grades 7–12 exam framework. Questions on this exam range from grades 7–12. Your final scaled score will be based only on scored questions.
Domains and Competencies
| Domain | Domain Title | Approx. Percentage of Exam |
|---|---|---|
| I | Nature of Science | 20% |
| II | Biochemistry and Cell Biology | 13% |
| III | Genetics and Evolution | 27% |
| IV | Biological Unity and Diversity | 20% |
| V | Ecology and Environment | 20% |
Pie chart of approximate test weighting outlined in the table above.
The content covered by this exam is organized into broad areas of content called domains. Each domain covers one or more of the standards for this field. Within each domain, the content is further defined by a set of competencies. Each competency is composed of two major parts:
- The competency statement, which broadly defines what an individual should know and be able to do in order to perform effectively in a Texas-approved educator preparation program.
- The descriptive statements, which describe in greater detail the knowledge and skills eligible for testing.
Domain I—Nature of Science
Competency 001—Understand principles and procedures of scientific inquiry.
For example:
- Demonstrate knowledge of the principles and procedures for designing and carrying out various types of scientific investigations.
- Analyze methods and criteria for collecting, organizing, analyzing, interpreting, and presenting scientific data.
- Recognize the evidential basis of scientific claims.
- Apply basic mathematical procedures and scientific notation in communicating data and addressing questions in biology.
- Demonstrate knowledge of safety procedures and hazards associated with biological investigations and the materials, equipment, technology, and disposal methods used in biology.
Competency 002—Understand the history and nature of science.
For example:
- Demonstrate knowledge of the historical development of major scientific ideas.
- Identify unifying scientific theories, models, and concepts in biology, Earth and space science, chemistry, and physics.
- Identify unifying themes, principles, and relationships that connect the different branches of science, including biology, Earth and space science, chemistry, and physics.
- Demonstrate knowledge of the nature of science and its characteristics as a system of inquiry.
Competency 003—Understand the relationships between biology, engineering, technology, mathematics, and society.
For example:
- Analyze the interrelationships between biology, engineering, technology, mathematics, and society.
- Critically evaluate scientific research and the coverage of science in the media.
- Analyze social, economic, and ethical issues associated with technological and scientific developments.
Domain II—Art Media, Tools, Technologies, Techniques, and Processes
Competency 004—Understand the chemistry of living systems.
For example:
- Demonstrate knowledge of basic chemistry, including the characteristics of atoms and molecules, and of the physical and chemical properties of water and carbon and the biological significance of these properties.
- Analyze biological phenomena at the cellular level in terms of the basic principles of thermodynamics and the properties of chemical reactions and covalent, ionic, and hydrogen bonds.
- Analyze the structure and function of macromolecules (e.g., carbohydrates, lipids, nucleic acids, proteins) and their monomers, including metabolic pathways involving their synthesis and breakdown.
- Analyze the role of enzymatic molecules in metabolic pathways involving the synthesis and breakdown of macromolecules.
Competency 005—Understand cell structure, function, and bioenergetics.
For example:
- Analyze the structures and functions of membranes, organelles, and other cellular components in prokaryotic and eukaryotic cells and the mechanisms by which cells maintain homeostasis.
- Analyze the process of photosynthesis and cellular respiration.
- Analyze the specializations of cells and differentiate cell types.
- Demonstrate knowledge of binary fission, mitosis, the stages of the cell cycle, and factors affecting the growth and division of cells.
Domain III—Genetics and Evolution
Competency 006—Understand molecular genetics.
For example:
- Analyze the synthesis, structure, and function of nucleic acids; gene structure and function and factors controlling gene expression; and the processes involved in protein synthesis.
- Analyze the types and causes of chromosomal and gene mutations, the consequences of these genetic changes, and the genetic basis of common disorders and diseases.
- Demonstrate knowledge of basic methods and applications of genetic engineering.
Competency 007—Understand patterns and processes of inheritance.
For example:
- Analyze meiosis and fertilization and their roles in sexual life cycles.
- Analyze patterns of inheritance and the relationship between genotypic and phenotypic frequencies.
- Demonstrate knowledge of the chromosomal basis of inheritance and its relationship to observed inheritance patterns and of the characteristics of extranuclear inheritance in plants and animals.
- Solve genetics problems.
Competency 008—Understand the mechanisms of biological evolution.
For example:
- Demonstrate knowledge of population genetics (e.g., Hardy-Weinberg), the mechanisms of natural and artificial selection, and the sources and significance of variation in populations.
- Analyze evolutionary patterns and the mechanisms of speciation.
Competency 009—Understand the scientific explanations and evidence for the history of life on Earth.
For example:
- Demonstrate knowledge of the geologic history of Earth, current scientific theories on the origin of life, biologically significant events in Earth's history, and the fossil record.
- Demonstrate knowledge of the principles of biological classification, phylogenetic trees and their cladistic basis, evolutionary relationships of major groups of organisms, and evolution as a unifying principle in biology.
- Analyze different kinds of scientific evidence for evolution.
Domain IV—Biological Unity and Diversity
Competency 010—Understand the structures and functions of organisms and their life cycles.
For example:
- Demonstrate knowledge of the characteristics of viruses, prokaryotes, protists, and fungi, including their reproduction and life cycles.
- Demonstrate knowledge of the characteristics of the major groups of plants, including their reproduction and life cycles.
- Demonstrate knowledge of the characteristics of the major groups of animals, including their reproduction and life cycles.
Competency 011—Understand how organisms obtain, store, and use energy and matter to maintain homeostasis.
For example:
- Analyze how prokaryotes, protists, and fungi obtain, store, and use energy, nutrients, and water to maintain homeostasis.
- Analyze how plants obtain, store, and use energy, nutrients, and water to maintain homeostasis.
- Analyze how animals obtain, store, and use energy, nutrients, and water to maintain homeostasis.
Competency 012—Understand the anatomy and physiology of human organ systems.
For example:
- Analyze the general structure, organization, function, and homeostatic relationships of the skeletal, muscular, and integumentary systems.
- Analyze the general structure, organization, function, and homeostatic relationships of the respiratory, circulatory, digestive, and excretory systems.
- Analyze the general structure, organization, function, and homeostatic relationships of the immune, nervous, endocrine, and reproductive systems.
- Demonstrate knowledge of common human disorders of the major organ systems and the causes, characteristics, and avoidance of common diseases.
Domain V—Ecology and Environment
Competency 013—Understand populations and communities.
For example:
- Analyze the interactions of biotic and abiotic factors that limit or regulate population size, including the difference between density-independent and density-dependent factors.
- Analyze the behavior of organisms and the relationship of behavior to various social systems.
- Analyze demographic characteristics, life history patterns, population growth curves, and survivorship curves for populations occurring in different habitats and under different conditions.
- Analyze the composition of biological communities, the types of relationships that exist among organisms in communities, the concept of ecological niche, and factors that produce change in communities.
Competency 014—Understand ecosystems and biomes.
For example:
- Analyze the effects of human activities on aquatic populations, communities, and ecosystems, and the implications of these effects for humans and other organisms.
- Analyze the effects of human activities on terrestrial populations, communities, and ecosystems, and the implications of these effects for humans and other organisms.
- Analyze the effects of human activities on the atmosphere and climate and the implications of these effects for humans and other organisms.
Competency 015—Understand the effects of human activities on the biosphere.
For example:
- Analyze the effects of human activities on aquatic populations, communities, and ecosystems, and the implications of these effects for humans and other organisms.
- Analyze the effects of human activities on terrestrial populations, communities, and ecosystems, and the implications of these effects for humans and other organisms.
- Analyze the effects of human activities on the atmosphere and climate and the implications of these effects for humans and other organisms.
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