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WGU Introduction-to-Biology Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Basic Principles of Life | 20–25% | - Characteristics of living organisms - Cell structure and function - Scientific method and biological inquiry - Chemical foundations of life |
| Ecology and Interdependence | 15–20% | - Population dynamics - Ecosystem structure and energy flow - Community interactions - Biomes and global ecology - Human impact on ecosystems |
| Energy and Metabolism | 15–20% | - Photosynthesis - Energy flow in biological systems - Cellular respiration - Enzymes and metabolic pathways |
| Evolution and Diversity of Life | 15–20% | - Speciation and classification - Mechanisms of evolution - Natural selection and adaptation - Overview of major biological groups |
| Genetics and Heredity | 20–25% | - Gene expression and protein synthesis - Mendelian and non-Mendelian inheritance - DNA structure and replication - Mutation and genetic variation - Chromosomes and cell division |
WGU Introduction to Biology (KBC1, C190) Sample Questions:
Question 1
Which property of water is illustrated byinsects walking on water?
A. Temperature stability
B. Cohesion
C. Good solvent
D. Change in density when frozen
Question 2
A gene sequenceCGCATACGGTACencodes a peptide (Arg-Ile-Arg-Tyr). A mutation inserts aGafter the secondC. How will this most likely affect the phenotype?
A. No effect; protein will be identical
B. Affects phenotype; all amino acids after the first will change (frameshift)
C. No effect; only the second amino acid changes
D. Affects phenotype; only the first amino acid changes
Question 3
(Use the exhibit.) Students claimed: Label 1 = metaphase, 2 = interphase, 3 = anaphase, 4 = prophase. Based on the figure, which label is correctly tagged?
A. 2
B. 3
C. 4
D. 1
Question 4
What is a primary characteristic ofperipheral membrane proteins?
A. Detergents or nonpolar solvents are necessary to remove them from the membrane.
B. They cannot be post-translationally modified.
C. They span the entire lipid bilayer, sometimes multiple times.
D. Weak intermolecular forces keep them attached to the lipid membrane.
Question 5
During which stage of meiosis dohomologous pairsof chromosomesseparate from each other?
A. Metaphase I
B. Anaphase II
C. Metaphase II
D. Anaphase I
Solutions:
| Question 1 Answer: B | Question 2 Answer: B | Question 3 Answer: B | Question 4 Answer: D | Question 5 Answer: D |
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