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WGU Introduction-to-Biology Exam Syllabus Topics:

Section	Weight	Objectives
Biochemistry	15%	- Structure and Function of Biomolecules - Enzymes and Metabolism - Cellular Energy (ATP, Cellular Respiration, Photosynthesis)
Evolution and Ecology	20%	- Conservation Biology - Population Ecology - Ecosystems and Biomes - Speciation and Phylogeny - Natural Selection
Genetics	25%	- DNA Structure and Replication - Gene Expression (Transcription, Translation) - Genetic Mutations and Disorders - Biotechnology - Mendelian Genetics - Modern Genetics and Heredity
Cell Biology	25%	- Cell Structure and Organelles - Cell Membrane Transport - Cell Communication - Cell Division (Mitosis, Meiosis)
Plant and Animal Biology	15%	- Homeostasis - Plant Structure and Function - Human Biology (Circulatory, Respiratory, Nervous, etc.) - Animal Tissues and Organ Systems

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WGU Introduction to Biology (KBC1, C190) Exam Sample Questions (Q19-Q24):

NEW QUESTION # 19
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. Decreasing logging throughout the Boreal forest
D. Increasing human population

Answer: D

NEW QUESTION # 20
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

Answer: B

NEW QUESTION # 21
The Mojave Desert is hot and dry. Roadrunners (endothermic, ground-dwelling birds) already have adaptations that reduce daytime heat gain. If average temperatures rise as predicted, how is theirplumagemost likely to change under natural selection?

A. Become thicker to trap more heat
B. Become lighter to increase reflection of heat
C. Become longer to increase heat absorption
D. Become darker to absorb more environmental heat

Answer: B

NEW QUESTION # 22
During which stage of meiosis dohomologous pairsof chromosomesseparate from each other?

A. Anaphase I
B. Metaphase I
C. Anaphase II
D. Metaphase II

Answer: A

NEW QUESTION # 23
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 with both a cell membrane and cell wall.
C. It is a prokaryote because it is microscopic.
D. It is a eukaryote because it contains ribosomes.

Answer: A

NEW QUESTION # 24
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