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WGU Introduction to Biology (KBC1, C190) Sample Questions:
1. What is the correctorderof the major events inDNA replication?
A) Synthesis of a complementary strand # unwinding the DNA # joining the two DNA strands
B) Joining the two DNA strands # synthesis of a complementary strand # unwinding the DNA
C) Unwinding the DNA # synthesis of a complementary strand # joining the two DNA strands
D) Unwinding the DNA # joining the two DNA strands # synthesis of a complementary strand
2. Coral reefs are built from calcium carbonate secretions of coral polyps and support diverse communities, but many are shrinking due to climate change. Which activity would have a negative impact on coral reef biodiversity?
A) Developing technologies that reduce pollutants
B) Increasing use of sustainable technologies
C) Increasing the use of renewable energy sources
D) Increasing use of fossil fuels
3. Which organism in this food web is a decomposer?
A) Damselfly
B) Frog
C) Bacteria
D) Algae
4. The nucleus contains chromosomes that are replicated and passed to the next generation. One of the two macromolecules in chromosomes is themolecule of heredity. Which molecule is the hereditary material?
A) DNA
B) Carbohydrates
C) Proteins
D) RNA
5. Which statement istrueabout the organisms on the vertebrate cladogram?

A) Only species with hair produce amniotic eggs.
B) Birds are the only species that produce eggs with shells.
C) Amphibians are four-limbed species but lack a bony skeleton.
D) Sharks and rays have vertebrae but lack a bony skeleton.
Solutions:
Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: C | Question # 4 Answer: A | Question # 5 Answer: D |