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WGU Introduction-to-Biology Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Ecology and Interdependence | 15–20% | - Ecosystem structure and energy flow - Biomes and global ecology - Human impact on ecosystems - Population dynamics - Community interactions |
| Genetics and Heredity | 20–25% | - Mendelian and non-Mendelian inheritance - Mutation and genetic variation - Chromosomes and cell division - Gene expression and protein synthesis - DNA structure and replication |
| Evolution and Diversity of Life | 15–20% | - Natural selection and adaptation - Overview of major biological groups - Mechanisms of evolution - Speciation and classification |
| Basic Principles of Life | 20–25% | - Cell structure and function - Characteristics of living organisms - Chemical foundations of life - Scientific method and biological inquiry |
| Energy and Metabolism | 15–20% | - Energy flow in biological systems - Enzymes and metabolic pathways - Photosynthesis - Cellular respiration |
WGU Introduction to Biology (KBC1, C190) Sample Questions:
A researcher studies an organism with these traits:~0.3 #msize, cell membrane enclosing contents,free ribosomesin cytoplasm, andgenetic material loosely distributedin the cytoplasm. Which statement is true?
- A. It is a prokaryote because it lacks a nucleus.
- B. It is a eukaryote because it contains ribosomes.
- C. It is a eukaryote with both a cell membrane and cell wall.
- D. It is a prokaryote because it is microscopic.
What is the correctorderof the major events inDNA replication?
- A. Synthesis of a complementary strand # unwinding the DNA # joining the two DNA strands
- B. Unwinding the DNA # joining the two DNA strands # synthesis of a complementary strand
- C. Joining the two DNA strands # synthesis of a complementary strand # unwinding the DNA
- D. Unwinding the DNA # synthesis of a complementary strand # joining the two DNA strands
The Boreal forest includes trees (pine, spruce) and animals (lynx, elk) harvested for energy, food, or trade.
Which activity would negatively impact biodiversity there?
- A. Decreasing human population
- B. Increasing use of renewable (instead of nonrenewable) energy
- C. Increasing human population
- D. Decreasing logging throughout the Boreal forest
Ocean acidification dissolves calcium-based exoskeletons of purple sea urchins. Some individuals have a trait making their exterior more acid-resistant. If acidification increases, how is this population most likely to evolve?
- A. Longer, more rigid spines become more common
- B. Acid-resistant exoskeletons become more common
- C. Shorter, more flexible spines become more common
- D. Less acid-resistant exoskeletons become more common
Which comparison ofDNA and RNAis correct?
- A. DNA is a monomer; RNA is a polymer.
- B. DNA stores hereditary information; RNA is used to make proteins.
- C. DNA is single-stranded; RNA is double-stranded.
- D. DNA uses uracil; RNA uses thymine.
