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WGU Introduction-to-Biology Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Ecology and Interdependence | 15–20% | - Population dynamics - Biomes and global ecology - Community interactions - Ecosystem structure and energy flow - Human impact on ecosystems |
| Topic 2: Genetics and Heredity | 20–25% | - Gene expression and protein synthesis - Chromosomes and cell division - DNA structure and replication - Mutation and genetic variation - Mendelian and non-Mendelian inheritance |
| Topic 3: Basic Principles of Life | 20–25% | - Cell structure and function - Chemical foundations of life - Scientific method and biological inquiry - Characteristics of living organisms |
| Topic 4: Evolution and Diversity of Life | 15–20% | - Natural selection and adaptation - Speciation and classification - Overview of major biological groups - Mechanisms of evolution |
| Topic 5: Energy and Metabolism | 15–20% | - Energy flow in biological systems - Photosynthesis - Enzymes and metabolic pathways - Cellular respiration |
WGU Introduction to Biology (KBC1, C190) Sample Questions:
Question 1
Which list containsonly bioticfactors?
A. Soil, frog, butterfly, fern
B. Soil, sunlight, frog, tree
C. Frog, butterfly, fern, tree
D. Wind, sunlight, fern, frog
Question 2
Agroup of lionsthat preys on deer constitutes which ecological level?
A. Ecosystem
B. Community
C. Population
D. Biome
Question 3
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. Increasing use of renewable (instead of nonrenewable) energy
B. Decreasing human population
C. Decreasing logging throughout the Boreal forest
D. Increasing human population
Question 4
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. Less acid-resistant exoskeletons become more common
B. Longer, more rigid spines become more common
C. Shorter, more flexible spines become more common
D. Acid-resistant exoskeletons become more common
Question 5
Which statement correctly describes how anionic bondforms?
A. Two atoms are attracted to a nearby hydrogen atom that binds them together
B. Two atomic nuclei fuse to form a single molecule
C. An electron is transferred from one atom to another
D. Two ions share several pairs of electrons
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: D | Question 4 Answer: D | Question 5 Answer: C |







